Data & definitions

EIA-923/860 raw workbook archive eia860-2024.zip (Zenodo 10.5281/zenodo.20380530)

U.S. Energy Information Administration, Form EIA-923/EIA-860, archived by Catalyst Cooperative

audit input

EIA-923/860 raw workbook archive eia923-2024.zip (Zenodo 10.5281/zenodo.21535857)

U.S. Energy Information Administration, Form EIA-923/EIA-860, archived by Catalyst Cooperative

audit input

EIA-923/860 raw workbook archive eia923-2015.zip (Zenodo 10.5281/zenodo.21535857)

U.S. Energy Information Administration, Form EIA-923/EIA-860, archived by Catalyst Cooperative

respondent frequency per plant for 2015 (PUDL carries it for ~10% of plants before 2018); audit input for that year

EIA-923/860 raw workbook archive eia923-2016.zip (Zenodo 10.5281/zenodo.21535857)

U.S. Energy Information Administration, Form EIA-923/EIA-860, archived by Catalyst Cooperative

respondent frequency per plant for 2016 (PUDL carries it for ~10% of plants before 2018); audit input for that year

EIA-923/860 raw workbook archive eia923-2017.zip (Zenodo 10.5281/zenodo.21535857)

U.S. Energy Information Administration, Form EIA-923/EIA-860, archived by Catalyst Cooperative

respondent frequency per plant for 2017 (PUDL carries it for ~10% of plants before 2018); audit input for that year

EFSEC facilities index (pipeline/config/crosswalks/efsec_facilities.csv)

Washington Energy Facility Site Evaluation Council, facility pages

Stage, decision and figures as each EFSEC facility page states them on the review date; EFSEC recommends and the Governor decides; a listed facility is not necessarily built.

Notable lifecycle events (pipeline/config/crosswalks/notable_lifecycle_events.csv)

Retirements, cancellations, removals and decisions as stated by the utility, agency or regulator cited on each row

A curated list, not a census: it names notable cases with a date and a source; absence from the list means nothing.

Request to generator dispositions (pipeline/config/crosswalks/queue_generator_links.csv)

Facility identities as stated by the BPA, agency, commission, utility or developer page cited on each row

A reviewed judgement, not a source's statement: a link needs a cited identity source and agreeing attributes, a name is never enough, and unresolved rows say why. The queue's and EIA's MW and status stay each source's own.

Residential tariffs and net-metering credit rules (pipeline/config/crosswalks/retail_tariffs.csv)

Tariff sheets published by Snohomish County PUD, Seattle City Light, Puget Sound Energy, PacifiCorp, Portland General Electric, Avista and Idaho Power; discovery cross-references from the OpenEI Utility Rate Database (CC0)

The price on a sheet, read on the retrieval date, not a bill: the adjustment schedules named beside it are listed and never summed, and a realized average from EIA-861 answers a different question. Rates change on their own effective dates, and the OpenEI entries are a discovery index whose Northwest rows are often older than the sheet cited here.

Cap-and-Invest auction summary reports (pipeline/config/crosswalks/cca_auctions.csv)

Washington State Department of Ecology, Cap-and-Invest auction summary reports (one publication per auction, cited on each row)

Prices and volumes exactly as each auction's summary report certifies them. A quarterly auction clears at a bid price; a reserve (APCR) auction sells at tier prices set by rule, and utilities may not consign into one. Allowances sold on behalf of consigning entities are the utility side of the auction, and those proceeds must benefit customers. A settlement price is the price on one auction day, not a forward market price.

Clean-energy obligation assertions (pipeline/config/crosswalks/clean_energy_obligations.csv)

Washington State Legislature (RCW 19.405, RCW 19.285), Washington Utilities and Transportation Commission orders and docket filings, Washington State Department of Commerce EIA and CEIP report summaries, and each utility's own filings, cited per row

One assertion per row, five kinds kept apart: what applies, what is owed, what the utility filed, what the issuing body decided, and the open proceeding. A fuel-mix value is not a compliance verdict, and a filing that restates a target does not enact it; standing on each row says whose figure it is. An absent row states what was checked and when; a utility not in the file has not been curated.

BPA interties and flowgates (pipeline/config/crosswalks/bpa_paths.csv)

Path definitions from BPA's OPI Paths page, ATCID V88 and 2025 Transmission Plan; ratings from BPA's OPI TTC series and the WECC 2026 Path Rating Catalog

A path is a metered cut plane; member lines are those BPA names, so partial cuts (non-BPA lines) are noted per row. TTC is a directional operating limit on the review date, not a rating of any line.

Existing Hydropower Assets (EHA) Plant Database, 2026 (published 2026-07-06, revised 2026-07-16; DOI 10.21951/EHA_FY2026/3374497)

Megan M. Johnson, Shih-Chieh Kao and Rocio Uría-Martínez. 2026. Existing Hydropower Assets (EHA) Plant Database, 2026. HydroSource. Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA. DOI: 10.21951/EHA_FY2026/3374497

Only the EHA plant identifier, plant name and water body of reviewed rows are republished, as identity beside the EIA plant; EHA capacity and generation are not loaded and never enter any total. An EHA record without an EIA plant id has no entity here.

Hydropower Infrastructure – LAkes, Reservoirs, and RIvers (HILARRI), Version 4 (2026-05-05; DOI 10.21951/HILARRI/3362570; links EHA 2025 plants to NID dams of 2025-08-18, GRanD v1.3, NHDPlusV2 and HUC12)

Hansen, C. H., Matson, P. G., Bozeman, B. B., Turner, S. W. D. 2026. Hydropower Infrastructure – LAkes, Reservoirs, and RIvers (HILARRI) v4. HydroSource. Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA. DOI: 10.21951/HILARRI/3362570

A crosswalk of identifiers, not attributes: the HILARRI row id and its GRanD, NHDPlusV2 flowline and HUC12 ids are republished for reviewed rows only. HILARRI's own quality flags are kept on each row; a link is not a reservoir volume, a flow or a generation series.

National Inventory of Dams, national export dated 2026-09-11 (dam id, name, river, purposes and coordinates used to verify each HILARRI dam link)

U.S. Army Corps of Engineers, National Inventory of Dams (export of 2026-09-11)

The NID id and dam name identify the structure the plant sits at, as HILARRI links it and the 2026-09-11 export confirms it. NID purposes are recorded on the row as the inventory states them (Grand Coulee's NID record lists no hydroelectric purpose). Dam height, storage and hazard fields are not loaded.

Ownership parent chains, reviewed plants and dated interest transfers (pipeline/config/crosswalks/ownership_parents.csv, ownership_paths_plants.csv, ownership_transfers.csv)

Forms 10-K for fiscal year 2025 of Puget Energy and Puget Sound Energy, Berkshire Hathaway Energy (PacifiCorp), Berkshire Hathaway Inc., NorthWestern Energy Group, Talen Energy Corporation, Portland General Electric and Avista Corporation, as filed with the U.S. Securities and Exchange Commission, and Capital Power Corporation's 2025 Annual Information Form as filed on SEDAR+, each cited on its row

A parent chain is what the owner's own filing states on the cited page, read on the checked date: a share is published only where the filing gives a percentage or says wholly owned, and a filing that states control without a percentage leaves the share null and stops the arithmetic there. Parent-attributed MW is a share of the same physical capacity as the direct owner's MW and is never added to it. Holders above 5 percent of a listed company are in its proxy statement and are not curated. A plant without a reviewed row has no chain, not no parent.

Named-load facility dossiers (pipeline/config/crosswalks/named_loads.csv, named_load_assertions.csv)

Idaho Public Utilities Commission case files and orders, Washington Utilities and Transportation Commission docket UE-161123, Idaho Power's 2025 IRP Appendix A, Idaho Department of Commerce and Micron releases, cited per row

Six kinds of dated assertion per facility, kept apart and never summed: announced, requested, minimum billed, contracted, forecast and metered. Confidential contract exhibits stay confidential; an absent row names who holds the figure. A named figure is never added to a forecast that already includes the facility, and no supplier is inferred from proximity.

Large-load and data-center tariff registry (pipeline/config/crosswalks/large_load_tariffs.csv)

Tariff sheets and orders of Puget Sound Energy, PacifiCorp, Portland General Electric, the Oregon PUC, Avista, Idaho Power and the Idaho PUC, Tacoma Power, Grant PUD, Chelan County PUD, Umatilla Electric Cooperative, NorthWestern Energy and the Washington UTC, cited per row

Thresholds and terms as each sheet or order states them on the review date; a pending row is a filing, not a tariff in effect.

BPA line evidence (pipeline/config/crosswalks/bpa_line_evidence.csv)

Bonneville Power Administration: Transmission Plan, ATC Implementation Document, GERP project summaries, quarterly capital reports and public GIS layers, cited per row

Dated statements BPA's own documents make about a line, each with its document, page and review date. Costs are for the scope each document names, never one line's cost, and are never added across documents; an absent row names who holds the figure.

BPA supply accounts (pipeline/config/crosswalks/bpa_customer.csv and supply_accounts.csv)

Bonneville Power Administration (RHWM outputs, Provider of Choice CHWM calculation, CDQs, customer products lists, product change letter), Snohomish County PUD (2025 Annual Report; Electric Utility Rates, Schedule 7; electric rates page) and Seattle City Light (financial statements for 2016, 2018, 2022, 2024 and 2025; 2021A and 2026A official statements; residential rates page) with the City of Seattle's rate ordinances, cited per row; FERC coverage lines cite PUDL's FERC Form 1 and EQR extracts (CC-BY-4.0), the eCFR and FERC's CID listing

Entitlements (MWa), demand quantities (kW), forecasts net of resources (MWa), dollars (USD), energy received (MWh, or MWa as an average) and a disclosure attribution (MWh), each with its own period and document, never added, subtracted or divided across one another. A figure names the BPA product in force during its period; a price per MWh appears only where the utility publishes the same period's BPA energy in MWh in the same document, badged derived. A note's Block and Slice rows are components of the year's purchase, never products, never added to its total and never priced. The bill trace quotes the utility's residential sheet and prints a price only where the utility does, in its unit; the share of a bill that pays for BPA power is shown only where a document states it.

Expectations ledger (pipeline/config/crosswalks/forecasts.csv, expectations.csv)

Avista Corporation, 2021, 2023, draft 2025 and 2025 Electric Integrated Resource Plans as filed with the Washington Utilities and Transportation Commission (UE-200301, UE-230793) and the Idaho Public Utilities Commission; Northwest Power and Conservation Council, 2021 Northwest Power Plan (document 2022-3) demand forecast workbook; cited per row

Extracted figures with the document named; the issuers' own files are retained privately and not re-served. Every value is the issuer's expectation on its issue date, labelled modeled; a revision between vintages is not a measured change in use, and an observed value sits beside a forecast only where the two share a basis.

Display names and aliases (pipeline/config/crosswalks/aliases.csv)

Display names verified against each organization's own website; EIA legal names retained as aliases

A display name is the name an organization uses for itself; the EIA name stays searchable and on the record. Each row cites the page that shows the name.

PUDL v2026.9.0, out_eia__yearly_plants

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia__yearly_generators

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia860__yearly_ownership

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia923__yearly_generation_fuel_combined

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia923__monthly_generation_fuel_combined

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia861__yearly_sales

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 861

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia861__yearly_short_form

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 861

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia861__yearly_reliability

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 861

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia861__yearly_energy_efficiency

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 861

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia861__yearly_demand_response

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 861

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_epacems__hourly_emissions

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EPA CAMD Power Sector Emissions Data

Data transformed by PUDL from U.S. EPA Clean Air Markets Division hourly emissions files; selected fields for two reporting years and four states republished; EPA data is public (https://www.epa.gov/power-sector/power-sector-data)

PUDL v2026.9.0, core_epa__assn_eia_epacamd

Catalyst Cooperative, PUDL v2026.9.0, derived from the U.S. EPA-EIA Power Sector Data Crosswalk

Data transformed by PUDL from EPA's camd-eia-crosswalk (https://github.com/USEPA/camd-eia-crosswalk); selected fields republished

PUDL v2026.9.0, core_eia861__yearly_net_metering_customer_fuel_class

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 861

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia861__yearly_non_net_metering_customer_fuel_class

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 861

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia__yearly_utilities

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia__codes_energy_sources

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia__codes_prime_movers

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia__codes_operational_status

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_pudl__codes_data_maturities

Catalyst Cooperative, PUDL v2026.9.0, PUDL's own data maturity codes

PUDL's own code table, not an EIA form; selected fields republished

PUDL v2026.9.0, core_eia__codes_reporting_frequencies

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia__codes_balancing_authorities

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia860__scd_generators_energy_storage

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia923__monthly_energy_storage

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia930__hourly_operations

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 930

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia930__hourly_net_generation_by_energy_source

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 930

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia930__hourly_interchange

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 930

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_pudl__assn_ferc1_pudl_utilities

Catalyst Cooperative, PUDL v2026.9.0, derived from FERC Form 1

Data transformed by PUDL from FERC Form 1 filings; selected fields republished

PUDL v2026.9.0, core_pudl__assn_eia_pudl_utilities

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_pudl__assn_ferc1_xbrl_pudl_utilities

Catalyst Cooperative, PUDL v2026.9.0, derived from FERC Form 1

Data transformed by PUDL from FERC Form 1 filings; selected fields republished

PUDL v2026.9.0, out_ferc1__yearly_purchased_power_and_exchanges_sched326

Catalyst Cooperative, PUDL v2026.9.0, derived from FERC Form 1

Data transformed by PUDL from FERC Form 1 filings; selected fields republished

PUDL v2026.9.0, out_ferc1__yearly_operating_revenues_sched300

Catalyst Cooperative, PUDL v2026.9.0, derived from FERC Form 1

Data transformed by PUDL from FERC Form 1 filings; selected fields republished

PUDL v2026.9.0, out_ferc1__yearly_operating_expenses_sched320

Catalyst Cooperative, PUDL v2026.9.0, derived from FERC Form 1

Data transformed by PUDL from FERC Form 1 filings; selected fields republished

PUDL v2026.9.0, core_ferc1__codes_power_purchase_types

Catalyst Cooperative, PUDL v2026.9.0, derived from FERC Form 1

Data transformed by PUDL from FERC Form 1 filings; selected fields republished

PUDL v2026.9.0, core_eia__codes_storage_technology_types

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, core_eia__codes_storage_enclosure_types

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

Preliminary Monthly Electric Generator Inventory, August 2026

U.S. EIA, preliminary monthly generator inventory, August 2026 (released September 24, 2026)

Preliminary monthly estimates; subsequent editions can revise values. Current assertions use the complete pinned workbook; cancelled and indefinitely postponed units share a sheet and are not distinguished.

PUDL v2026.9.0, core_eia860m__changelog_generators

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Form 860M

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

Grid Expansion & Reinforcement Portfolio, line projects (Evolving Grid), layer 11

Bonneville Power Administration, Grid Expansion & Reinforcement Portfolio line projects (Evolving Grid), 2026

Proposed line rebuilds and upgrades as BPA published them for its GERP cycle: expected energization year, estimated cost in dollars and status are BPA's planning figures at publication and change with each cycle; the geometry is the existing line the project follows, not a final route.

Grid Expansion & Reinforcement Portfolio, substation projects (Evolving Grid), layer 10

Bonneville Power Administration, Grid Expansion & Reinforcement Portfolio substation projects (Evolving Grid), 2026

Proposed new or rebuilt substations as BPA published them for its GERP cycle: expected energization year, estimated cost in dollars and status are planning figures at publication; the point is the existing substation yard or the named site.

Electric Power Transmission Lines (HIFLD Open, edition through 2021-04), layer 0, features intersecting the map extent

HIFLD Open, Electric Power Transmission Lines (ORNL, LANL, INL, NGA HSIP team), edition through April 2021

Transmission lines at 100 kV and above as compiled by the HIFLD program from imagery and public sources between 2014 and 2021; OWNER is the compilers' attribution, VOLTAGE partly inferred (INFERRED); no capacity, connectivity, ownership share or flow is asserted. BPA-owned rows are held back where BPA publishes its own lines.

Electric Substations 2022 (HIFLD Open via Oregon Explorer), layer 10, ≥100 kV in WA/OR/ID/MT

HIFLD Open, Electric Substations (ORNL, LANL, INL, NGA HSIP team), April 2022, via Oregon Explorer

Substations at 69 kV and above as compiled by the HIFLD program from imagery and public sources in 2020-2022; a TYPE of TAP marks a line tap, not a facility; MAX_VOLT and MIN_VOLT are the compilers' values, some inferred (MAX_INFER, MIN_INFER); no ownership, connectivity or capacity is asserted. Published at 100 kV and above only.

BPA Transmission Lines (Public View), layer 0 BPA_TransmissionLines

Bonneville Power Administration, Geospatial Services

This product was made for informational purposes only and was created with the best available data at time of production. It does not represent any legal information or boundaries. BPA GIS disclaims responsibility or liability for any data discrepancies or errors. No BPA endorsement; no engineering or rights-of-way use. Operating voltage is retained raw only; the source declares no unit.

Electric Utility Service Areas (CPR MapServer layer 0 ElectricUtilityServiceAreas)

Washington State Department of Ecology; boundaries compiled by the Washington Utilities and Transportation Commission and utilities

Category 1 - Public Information. These data can be shared publicly. Provided as is without warranty. Boundaries are unofficial and approximate; overlaps and gaps are preserved; a point inside a polygon indicates a candidate utility, not a service determination. Service questions go to the utility.

Oregon Natural Gas and Electric Utility Service Areas (ODOE Find Your Utility), layer 0

Oregon Department of Energy, Find Your Utility service areas

Compiled by ODOE from many sources for informational purposes only; errors may exist; not a legal boundary or service guarantee. Electric utilities only in this release.

The atlas draws these polygons on its map and names them on territory pages; it publishes no copy of the layer.

Electricity Providers Symbolized (ElectricProvider), layer 0

State of Idaho, Idaho GIS Hub, Electricity Providers

To be used for reference only, accuracy not guaranteed. Compiled from utility shapefiles where provided, otherwise digitized from maps; municipal boundaries used for cities. Not a service guarantee.

The atlas draws these polygons on its map and names them on territory pages; it publishes no copy of the layer.

Montana Rural Electric Cooperative Service Areas, layer 0

State of Montana ArcGIS Online; digitized from the Montana Electric Cooperatives' Association member map

Cooperative service areas only (no investor-owned or municipal utilities); digitized from an association map, so boundaries are approximate. No terms are stated by the publisher; used as attributed context per project policy for public state-hosted geometry where no canonical layer exists.

The atlas draws these polygons on its map and names them on territory pages; it publishes no copy of the layer.

PGE Distribution System Data (the Distributed Generation Evaluation Map's feeder layer), layer 0, the feeders PGE files under substation BROOKWOOD

Portland General Electric, Distributed Generation Evaluation Map data (PGE Distribution System Data)

DISCLAIMER: The graphic representations and other information/data contained herein (collectively the “depiction”) is the property of PGE. The depiction is made available for your review for informational purposes only. Information derived from GIS data is subject to change. The depiction is provided “as is” without any guarantee, representation or warranty of any kind, either express, implied, or statutory. PGE assumes no liability with respect to any reliance you place on the depiction. (Item terms, quoted.) PGE's screening of one feeder at one date: peak load in MVA, net daytime minimum load and connected and queued distributed generation in MW, nominal voltage in kV, and PGE's own readiness and generation-limited classifications. PGE does not publish available hosting capacity, so none is shown or derived here, and nothing here is an interconnection approval or a guarantee of present capacity. Feeder figures are not added together. PGE's user guide and FAQ are linked, not reproduced.

The atlas shows the feeders of one substation on PGE's organization page; it publishes no copy of the layer and no table of its rows.

Electric Transmission Line PRD, layer 0 Electric_Transmission_Line (the line layer of Avista Geospatial Maps)

Avista Corporation, Electric Transmission Line layer (Avista Geospatial Maps)

“To the extent that the locations of Avista’s facilities are shown, such facilities are shown in their approximate location. Avista does not warrant the accuracy of the information shown on the map.” (Avista Geospatial Maps, item terms, quoted.) The maps that draw this layer add that their use “does not convey any rights or privileges”. Avista's segments as its public maps draw them, counted on Avista's page by the line voltage Avista files: no ratings, capacity, ownership shares, circuits or connectivity. A line beside a plant or project is not an interconnection and says nothing about available capacity.

The atlas draws these segments on its map and summarizes them on Avista's page; it publishes no copy of the layer and no table of its rows.

Fuel Mix Disclosure CY2024, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-12-10)

Washington State Department of Commerce, Fuel Mix Disclosure CY2024 (report 2026-02-05), data extract

Each retail supplier's Washington sales for the report year by fuel category in MWh and share, as Commerce computed them from declared resources, the BPA system mix and unspecified purchases, which have been their own category since CY2018 (RCW 19.29A.060 and .140). Multi-state utilities appear as their Washington share; product rows (green programs) sit beside their utilities. Shares are of retail sales including line losses, not of generation; a disclosed mix is not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2024, Utility Fuel Mix by Plant extract (sheet Report Extract, run 2025-12-01)

Washington State Department of Commerce, Fuel Mix Disclosure CY2024 (report 2026-02-05), data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type (BPA Claim, Utility Specified, Utility Unspecified) and REC status, as filed and verified for the report year's disclosure. A claim is a disclosure attribution for Washington retail sales, not a delivery path, and the same plant can be claimed by several utilities.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2023, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-05-16)

Washington State Department of Commerce, Fuel Mix Disclosure CY2023, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for the report year by fuel category in MWh and share, as Commerce computed them from declared resources, the BPA system mix and unspecified purchases, which have been their own category since CY2018 (RCW 19.29A.060 and .140). Multi-state utilities appear as their Washington share; product rows (green programs) sit beside their utilities. Shares are of retail sales including line losses, not of generation; a disclosed mix is not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2022, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2026-02-25)

Washington State Department of Commerce, Fuel Mix Disclosure CY2022, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for the report year by fuel category in MWh and share, as Commerce computed them from declared resources, the BPA system mix and unspecified purchases, which have been their own category since CY2018 (RCW 19.29A.060 and .140). Multi-state utilities appear as their Washington share; product rows (green programs) sit beside their utilities. Shares are of retail sales including line losses, not of generation; a disclosed mix is not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2021, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2021, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for the report year by fuel category in MWh and share, as Commerce computed them from declared resources, the BPA system mix and unspecified purchases, which have been their own category since CY2018 (RCW 19.29A.060 and .140). Multi-state utilities appear as their Washington share; product rows (green programs) sit beside their utilities. Shares are of retail sales including line losses, not of generation; a disclosed mix is not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2020, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-02-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2020, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for the report year by fuel category in MWh and share, as Commerce computed them from declared resources, the BPA system mix and unspecified purchases, which have been their own category since CY2018 (RCW 19.29A.060 and .140). Multi-state utilities appear as their Washington share; product rows (green programs) sit beside their utilities. Shares are of retail sales including line losses, not of generation; a disclosed mix is not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2019, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2019, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for the report year by fuel category in MWh and share, as Commerce computed them from declared resources, the BPA system mix and unspecified purchases, which have been their own category since CY2018 (RCW 19.29A.060 and .140). Multi-state utilities appear as their Washington share; product rows (green programs) sit beside their utilities. Shares are of retail sales including line losses, not of generation; a disclosed mix is not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2018, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2026-02-25)

Washington State Department of Commerce, Fuel Mix Disclosure CY2018, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for the report year by fuel category in MWh and share, as Commerce computed them from declared resources, the BPA system mix and unspecified purchases, which have been their own category since CY2018 (RCW 19.29A.060 and .140). Multi-state utilities appear as their Washington share; product rows (green programs) sit beside their utilities. Shares are of retail sales including line losses, not of generation; a disclosed mix is not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2017, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2017, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for CY2017 by fuel category in MWh and share, as Commerce's fuel-mix system computes them from declared resources, the BPA system mix and unspecified purchases. A restatement, not the disclosure published for CY2017: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). Multi-state utilities appear as their Washington share. Shares are of retail sales including line losses, not of generation; not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2016, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2016, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for CY2016 by fuel category in MWh and share, as Commerce's fuel-mix system computes them from declared resources, the BPA system mix and unspecified purchases. A restatement, not the disclosure published for CY2016: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). Multi-state utilities appear as their Washington share. Shares are of retail sales including line losses, not of generation; not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2015, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-02-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2015, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for CY2015 by fuel category in MWh and share, as Commerce's fuel-mix system computes them from declared resources, the BPA system mix and unspecified purchases. A restatement, not the disclosure published for CY2015: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). Multi-state utilities appear as their Washington share. Shares are of retail sales including line losses, not of generation; not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2014, Utility Fuel Mix by Fuel Category extract (sheet Report Extract, run 2025-05-19)

Washington State Department of Commerce, Fuel Mix Disclosure CY2014, Utility Fuel Mix by Fuel Category data extract

Each retail supplier's Washington sales for CY2014 by fuel category in MWh and share, as Commerce's fuel-mix system computes them from declared resources, the BPA system mix and unspecified purchases. A restatement, not the disclosure published for CY2014: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). Multi-state utilities appear as their Washington share. Shares are of retail sales including line losses, not of generation; not a plant-level emissions accounting and not a compliance finding.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2023, Utility Fuel Mix by Plant extract (sheet Report Extract, run 2025-05-16)

Washington State Department of Commerce, Fuel Mix Disclosure CY2023, Utility Fuel Mix by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type (BPA Claim, Utility Specified, Utility Unspecified) and REC status, as filed and verified for the report year's disclosure. A claim is a disclosure attribution for Washington retail sales, not a delivery path, and the same plant can be claimed by several utilities.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2022, Utility Fuel Mix by Plant extract (sheet Report Extract, run 2026-02-25)

Washington State Department of Commerce, Fuel Mix Disclosure CY2022, Utility Fuel Mix by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type (BPA Claim, Utility Specified, Utility Unspecified) and REC status, as filed and verified for the report year's disclosure. A claim is a disclosure attribution for Washington retail sales, not a delivery path, and the same plant can be claimed by several utilities.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2021, Utility Fuel Mix Market by Plant extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2021, Utility Fuel Mix Market by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type (BPA Claim, Utility Specified, Utility Unspecified) and REC status, as filed and verified for the report year's disclosure. A claim is a disclosure attribution for Washington retail sales, not a delivery path, and the same plant can be claimed by several utilities.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2020, Utility Fuel Mix Market by Plant extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2020, Utility Fuel Mix Market by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type (BPA Claim, Utility Specified, Utility Unspecified) and REC status, as filed and verified for the report year's disclosure. A claim is a disclosure attribution for Washington retail sales, not a delivery path, and the same plant can be claimed by several utilities.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2019, Utility Fuel Mix Market by Plant extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2019, Utility Fuel Mix Market by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type (BPA Claim, Utility Specified, Utility Unspecified) and REC status, as filed and verified for the report year's disclosure. A claim is a disclosure attribution for Washington retail sales, not a delivery path, and the same plant can be claimed by several utilities.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2018, Utility Fuel Mix by Plant extract (sheet Report Extract, run 2026-02-25)

Washington State Department of Commerce, Fuel Mix Disclosure CY2018, Utility Fuel Mix by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type (BPA Claim, Utility Specified, Utility Unspecified) and REC status, as filed and verified for the report year's disclosure. A claim is a disclosure attribution for Washington retail sales, not a delivery path, and the same plant can be claimed by several utilities.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2017, Utility Fuel Mix Market by Plant extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2017, Utility Fuel Mix Market by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type and REC status, as Commerce's fuel-mix system holds them for CY2017. A restatement, not the disclosure published for CY2017: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). A claim is a disclosure attribution for Washington retail sales, not a delivery path.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2016, Utility Fuel Mix Market by Plant extract (sheet Report Extract, run 2025-05-20)

Washington State Department of Commerce, Fuel Mix Disclosure CY2016, Utility Fuel Mix Market by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type and REC status, as Commerce's fuel-mix system holds them for CY2016. A restatement, not the disclosure published for CY2016: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). A claim is a disclosure attribution for Washington retail sales, not a delivery path.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2015, Utility Fuel Mix Market by Plant extract (sheet Report Extract, run 2025-03-11)

Washington State Department of Commerce, Fuel Mix Disclosure CY2015, Utility Fuel Mix Market by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type and REC status, as Commerce's fuel-mix system holds them for CY2015. A restatement, not the disclosure published for CY2015: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). A claim is a disclosure attribution for Washington retail sales, not a delivery path.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

Fuel Mix Disclosure CY2014, Utility Fuel Mix Market by Plant extract (sheet Report Extract, run 2025-05-19)

Washington State Department of Commerce, Fuel Mix Disclosure CY2014, Utility Fuel Mix Market by Plant data extract

Each claimant's declared resources by plant (Plant Code = EIA plant id; 9999991 = the BPA system claim) with MWh, claim type and REC status, as Commerce's fuel-mix system holds them for CY2014. A restatement, not the disclosure published for CY2014: every extract is a run of Commerce's current fuel-mix system, and until ESHB 1428 (2019) the statute required Commerce to assign fuel shares to unspecified power, which this run keeps as its own Market category; Commerce's aggregate time series gives different statewide totals for the statutory reports of the years before CY2018 (wa-fmd-2022-aggregate-time-series, Info sheet). A claim is a disclosure attribution for Washington retail sales, not a delivery path.

The atlas shows each claimant's figures with attribution on its organization and plant pages; it publishes no copy of the extracts and no table of their rows.

2010-2024 Greenhouse Gas Emissions From Electricity Use (ghgElectricityEms.xlsx; sheets Emissions and Power by Year and Raw Data 2019-2024), last modified 2026-06-15

Oregon Department of Environmental Quality, Greenhouse Gas Reporting Program, 2010-2024 Greenhouse Gas Emissions From Electricity Use

Each electricity supplier's electricity delivered to Oregon end users in MWh, and the anthropogenic emissions DEQ computes for it in metric tons CO2e from its own emission factors, by year, and by fuel type from 2019 (OAR 340-215-0120). Specified sources are reported at the busbar or with DEQ's 2% transmission-loss factor; unspecified purchases carry 0.428 t CO2e/MWh; a multi-jurisdictional utility reports its whole system and its Oregon retail sales including losses, and DEQ applies the system's factor to the Oregon figure. Bonneville Power Administration, Powerex and Tacoma are fuel types in DEQ's workbook and stay their own categories, never resolved to plants. Not generation, not Washington's Fuel Mix Disclosure (a different basis), and not a compliance determination.

The atlas shows each linked supplier's figures on its organization page and DEQ's statewide total on the Oregon state view, with attribution; it publishes no copy of the workbook and no table of its rows.

Electric Utility Allowance Allocation Schedule, Master Spreadsheet v8 (Pub. 23-02-031), updated 2025-12-08

Washington State Department of Ecology, Electric Utility Allowance Allocation Schedule (Pub. 23-02-031)

No-cost allowances a CETA-obligated electric utility receives under the Climate Commitment Act (WAC 173-446-230), one allowance = 1 metric ton CO2e, for compliance period 1 (2023-2026). The schedule is an allocation, not an emissions measurement and not a cap on the utility: it is computed from Ecology's forecast of the utility's Washington retail load and resource supply mix, with the BPA emission factor updated each year. Years after 2026 are TBD in the workbook and are not published. A utility may not sell or trade these allowances to other entities: it uses them for compliance, banks them, transfers them to an eligible generator or power marketing administration, or consigns them to a quarterly auction, and auction proceeds must benefit customers with priority on low-income rate impacts. Utility names are Ecology's; the link to an organization is the reviewed crosswalk only.

Interconnection Request Queue (generator interconnection and line/load requests), published workbook

Bonneville Power Administration, Interconnection Request Queue

A queue request is a request for interconnection service, not a plant: many requests can describe one facility, requests are withdrawn or restudied, and an energized request does not name the operating plant. Request numbers and study milestones are BPA's; nameplate and interconnection MW are the requestor's figures. No location beyond county and the named point of interconnection.

Queued Up: 2026 Edition, interconnection queue data file (data through 2025; workbook dated May 2026)

Lawrence Berkeley National Laboratory and GridTracker, Queued Up: 2026 Edition, interconnection queue data file (Rand et al., 2026), CC BY 4.0

A compilation of transmission providers' interconnection queues in one schema, as each provider published them and as LBNL and GridTracker cleaned them: a request for interconnection service, not a plant, with the provider's own status text kept beside LBNL's status, and with agreement, operation and withdrawal dates only where the provider publishes them. Requests sited in WA, OR, ID and MT are loaded; the compilation lags the providers' own queues by months, so an active request here can have changed since. MW are the requester's figures and never enter capacity totals. Rows carrying BPA's request numbers are candidates for the same request in BPA's own workbook and are never merged with it.

Pre-Cluster Serial Interconnection Queue (Serial_Interconnection_Queue.xlsx), sheet QUEUE-GENERATION INTERCONNECT, updated 2026-09-24

NorthWestern Energy, Pre-Cluster Serial Interconnection Queue, OASIS (NWMT), updated 2026-09-24

A request for interconnection service, not a plant, as NorthWestern lists it on the workbook's UPDATED date. The status is NorthWestern's word (Withdrawn, In Service, Suspended, In Construction, Active - Contract Negotiations, Signed Agreement, Active), kept beside the common outcome. The workbook dates the request only: its In Service Date column does not say whether a date is requested or achieved, so no operation date is taken from it. MW is the Summer Output (MW) column, with Winter Output (MW) kept beside it; a requester's figure, never capacity. The location is free text: a state is taken only where it ends with Montana, MT, South Dakota or SD, and otherwise stays null. Rows carry NorthWestern's own project numbers, the numbers LBNL's compilation uses for provider NWMT; the two accounts are related by that number and never merged or name-matched. The TRANSITIONAL CLUSTER sheet (four rows repeated from the generation sheet) and the QUEUE-LINE INTERCONNECT sheet (transmission-line requests) are not read. OATI serves OASIS under its own certificate authority, whose root is in neither the Mozilla (certifi) nor the macOS system trust store (checked 2026-09-28), so a browser may warn before opening the file.

The atlas reads this workbook and publishes counts and outcomes from it; it publishes no copy of it and no table of its rows. NorthWestern replaces the file in place, so the link serves its current edition, which can differ from the one pinned here. OATI's certificate authority is not in common browser trust stores, so a browser may warn first.

OASIS locational marginal prices at one WEIM load aggregation point over a window of whole trade dates: day-ahead hourly (report PRC_LMP, market run DAM) and real-time 5-minute (report PRC_INTVL_LMP, market run RTM)

Source: California ISO, OASIS

CAISO's locational marginal price at one pricing node over whole trade dates, in U.S. dollars per megawatt-hour, with the energy, congestion and loss components (and the greenhouse-gas component where the report carries one) exactly as OASIS published them at retrieval. Day-ahead and real-time are different markets at different intervals and are never averaged together. This is not a Northwest price and not the Mid-Columbia (Mid-C) bilateral index, which ICE publishes and EIA republishes under a licence that does not reach this site. BPA is a WEIM participant only: OASIS published day-ahead LMPs at its load aggregation point on these dates, but BPA did not settle in CAISO's day-ahead market, so the day-ahead series is CAISO's price at that node, not a price BPA paid. CAISO corrects invalid prices in place after publication; these are the values at the retrieval time recorded in the manifest.

CWMS Data API revised (CBT-REV) series for the January 2024 episode window at Grand Coulee (office NWDP, location GCL: hourly forebay elevation, hourly outflow, daily inflow), Lower Granite (LWG: hourly outflow and spill) and Bonneville (BON: hourly outflow and tailwater elevation), the location records that key the four Lower Snake dams (LWG, LGS, LMN, IHR) and every reviewed dam USACE's NIDID alias group names

U.S. Army Corps of Engineers, Northwestern Division, CWMS Data API (revised CBT series, as served at retrieval)

USACE's revised hourly and daily series for three projects over one episode window, and the keys of six, as the CWMS Data API served them at the retrieval time recorded in the manifest. The API serves them unversioned and USACE revises values in place, so a later retrieval can differ; each value keeps the CWMS quality code it was served with. Elevation is feet above the location's own vertical datum; flows are cubic feet per second. The Lower Snake series this API served nothing for come from USACE's Dataquery (usace-dataquery-history), never mixed with these. Water quantities, not generation. Grand Coulee storage is not shown until its capacity-table basis is settled.

Dataquery revised (CBT-REV) hourly series for the January 2024 episode window at the Lower Snake dams where the CWMS Data API served no value (checked 2026-09-28): Lower Granite forebay elevation; Little Goose, Lower Monumental and Ice Harbor forebay elevation, outflow and spill

U.S. Army Corps of Engineers, Northwestern Division, Dataquery 2.0 (revised CBT series, as served at retrieval)

USACE's revised hourly series at four Lower Snake projects over one episode window, as Dataquery served them at the retrieval time recorded in the manifest, where the CWMS Data API served none. Dataquery states no version and USACE revises values in place, so a later retrieval can differ; each value keeps the quality code it was served with. Stamps are Pacific Standard Time all year, shown at the hour ending UTC (+8 h). Flows stay in kcfs (thousand cubic feet per second) as served; a view that sets them on one axis with cfs flows multiplies by 1,000 and says so. Elevation is feet above the location's vertical datum. Water quantities, not generation.

2025 Gazetteer Files, Places (national)

U.S. Census Bureau, 2025 Gazetteer Files

Representative point per place for orientation only; not an address, service area, or supply determination.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook BPA_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for Bonneville Power Administration, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook BPA_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for Bonneville Power Administration, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook ID_IPCO_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for Idaho Power Company, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook ID_IPCO_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for Idaho Power Company, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook MT_NWMT_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for NorthWestern Corp (portion within region), in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook MT_NWMT_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for NorthWestern Corp (portion within region), "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook NPCC_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for the Council's whole-region aggregate NPCC, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026. The Council's NPCC workbooks carry no BA column: every area workbook names its area in column BA, and NPCC's rows start at ClimateModel. The area on each row here is the workbook's own name.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook NPCC_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for the Council's whole-region aggregate NPCC, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026. The Council's NPCC workbooks carry no BA column: every area workbook names its area in column BA, and NPCC's rows start at ClimateModel. The area on each row here is the workbook's own name.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook OR_PGE_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for Portland General Electric Co, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook OR_PGE_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for Portland General Electric Co, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook PACE_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for PacificCorp East, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook PACE_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for PacificCorp East, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook PACW_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for PacificCorp West, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook PACW_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for PacificCorp West, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_AVA_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for Avista Corp, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_AVA_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for Avista Corp, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_CHPD_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for PUD Chelan Co, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_CHPD_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for PUD Chelan Co, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_DOPD_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for PUD Douglas Co, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_DOPD_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for PUD Douglas Co, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_GCPD_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for PUD Grant Co, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_GCPD_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for PUD Grant Co, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_PSE_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for Puget Sound Energy, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_PSE_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for Puget Sound Energy, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_SCL_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for Seattle City Light, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_SCL_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for Seattle City Light, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_TPWR_AnnualEnergy.xlsx (annual energy in aMW; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual energy the Council forecasts for City of Tacoma, in average megawatts — "the total energy load in megawatt-hours divided by the number of hours in the year", which the Council writes aMW and this atlas records in its dictionary unit MWa (DemandForecast_README.xlsx Glossary!D3). aMW is not MW and not MWh. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, frozen-efficiency demand forecast workbook WA_TPWR_AnnualPeak.xlsx (annual single-hour peak in MW with the peak hour; five sheets, one per future pathway; rows by climate model and year 2027-2046)

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), frozen-efficiency demand forecast workbooks

Annual peak load the Council forecasts for City of Tacoma, "reported in single hour MW units" (DemandForecast_README.xlsx Glossary!D3), beside the hour of that peak exactly as the workbook prints it, with the Pacific timezone abbreviation the Council wrote (PST or PDT); the hour is kept as text and never re-zoned or resolved to an instant here. A single-hour MW peak is never added to an aMW energy figure. Peak workbooks carry no hydrogen column. Frozen efficiency means equipment efficiency is held fixed so the Council's resource model can choose cost-effective efficiency afterwards (Glossary!B3): a planning input, not a sales forecast, not an observation and not a utility IRP expectation, and never merged with one. Total_Load is the Council's own column (RCI + DC + EV + H2 load as published), never a sum made here; it can differ from its components by a unit or two of rounding, which is not corrected. DC_Load is incremental data-centre load from 2025 and existing data centres sit in RCI_Load (Glossary!E27). Area labels are the Council's own, not the atlas frame and not a service territory; NPCC is the Council's regional aggregate ("not a BA but the aggregation of all the regional BAs", Glossary!H17) and is never added to the thirteen area rows. The five future pathways and the three climate models are separate dimensions: never averaged, summed or collapsed into one another. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads these workbooks and describes what they hold; it publishes no copy of them and no table of their rows.

Draft Ninth Northwest Power Plan, data-centre load forecast workbook 9th Plan data center forecast final 03.16.2025.xlsx ("9th Power Plan Tech Load Forecast"; READ ME!E14: "Last updated: March 16, 2025 (additional notes added in September 2026 for clarity)"): incremental data-centre and chip-fab annual energy in aMW, low, mid and high trajectories, for the region 2024-2046 and by utility 2024-2030

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), data-centre load forecast workbook

Incremental annual energy the Council forecasts for new data centres and chip fabrication plants, an input to its draft Ninth Plan demand forecast. The workbook's own notes say "Load values are annual energy (aMW)" and "Incremental (new) growth forecast, does not include existing tech loads" (text boxes on sheets '20y regional forecasts' and 'Forecast pathways'); aMW is recorded here in the dictionary unit MWa, and there is no peak. Three trajectories, low, mid ("BASE") and high: Appendix F (PDF page 32) states the medium input was used for the Late Growth and Mixed Bag futures, the high input for High Growth and Early Growth, and the low input for Low Growth. They are never averaged or summed. The region runs 2024-2046 ("Post 2030 values are trended upwards at flat rates"); by utility the workbook runs 2024-2030, split into data centres only, chip fabs only and all technologies, under the Council's own utility labels (BPA, PGE, PAC, Chelan, Douglas, Grant, Idaho, NWMT), which are not the atlas frame or a service territory. A blank cell is not published, never zero; the Council's Total column is its own, never a sum made here. This input is not the DC_Load column of the area workbooks, which is the forecast model's output. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads this workbook and describes what it holds; it publishes no copy of it and no table of its rows.

Draft Ninth Northwest Power Plan, hydrogen load forecast workbook Hydrogen forecast 9th Plan FINAL 04.22.2024.xlsx ("9th Power Plan Hydrogen Load Forecast"; READ ME!E14: "Last updated: April 22, 2025"): electric load for hydrogen production in aMW, low and high trajectories, for the Northwest 2027-2050 and by the Council's hydrogen zones 2027-2046

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), hydrogen load forecast workbook

Electric load the Council forecasts for producing hydrogen in the Northwest, an input to its draft Ninth Plan demand forecast, in average megawatts as the workbook heads its columns ('NW aMW', 'aMW'), recorded here in the dictionary unit MWa. Energy only: the Council models hydrogen load as curtailable and leaves it out of the peak forecast (Appendix F, PDF page 42). Two trajectories, low and high, described on the sheet 'Pathways'; never averaged or summed. The Northwest series (column J 'NW aMW', 2027-2050) is the load left after the Council's assumption that a growing share of hydrogen is imported or made without electricity (half by 2045, Appendix F PDF page 44); the zone breakouts (2027-2046) split it across the Council's own hydrogen zones (Puget North, BPA OR, BPA WA, Olympia, NWMT, Douglas; the high case adds PACW, Chelan, Grant, PGE, Tacoma, Avista, SCL and Idaho at 2.5% each "for general industrial usage"), which are not the atlas frame or a service territory. The workbook's calculation columns and background sheets are not loaded. This input is not the H2_Load column of the area workbooks. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads this workbook and describes what it holds; it publishes no copy of it and no table of its rows.

Draft Ninth Northwest Power Plan, model buildouts workbook 9th Plan Model Buildouts.xlsx ("NWPCC 9th Plan Scenario Buildout"; READ ME!E14: "Last updated July 28th, 2026 / Initial upload"): the new resources the Council's capital expansion model OptGen selects in each of its 13 sensitivities, by snapshot year (2028, 2030, 2032, 2034, 2038, 2042, 2046), build year, Council zone, resource and resource type

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), model buildouts workbook

The resources the Council's model selects under each sensitivity of its draft Ninth Plan scenario analysis: a planning scenario, not the plan's recommended resource strategy, not a utility's plan and not a forecast of what will be built. Each sensitivity's portfolio is optimized over the same sampled futures (demand, gas prices, hydro, wind and solar; Appendix K, all-appendices PDF page 480), so there is no future pathway or climate model in the workbook. Units: the Data sheet heads its value column 'Nameplate Cap. (MW)' ('Size in nameplate MW', Glossary!D10), but the plan draws conservation (resource type EE) in average megawatts (Figure 4-1 axis 'Nameplate MW / Conservation aMW', plan PDF page 92; Figure N-6 'average MW', all-appendices PDF page 559), and the EE rows summed over zones reproduce Figure N-6's bars; EE is recorded here in MWa and every other type in MW nameplate. A snapshot lists what the model holds in that simulated year, including resources built in an earlier year; snapshots are never added together, sensitivities are never averaged, and conservation in MWa is never added to capacity in MW. Zones are the Council's own model zones (Glossary!D7: supply-side resources may be built in one zone for another zone's demand), not the atlas frame or a service territory. The plan is draft 2026-3, open for comment through October 16, 2026.

The atlas reads this workbook and describes what it holds; it publishes no copy of it and no table of its rows.

Draft Ninth Northwest Power Plan, needs assessment workbook Ninth Plan Needs Assessment Workbook for Public_Final.xlsx ("NWPCC 2031 Needs Assessment Results"; Introduction!E10: "Last updated July 1, 2026"): for each of five need studies in 2031, the region's seasonal planning reserve margins with the peak loads, resource contributions and need behind them, and the annual firm-energy adequacy reserve margin with its monthly derivation

Northwest Power and Conservation Council, draft Ninth Northwest Power Plan (document 2026-3, cover date August 12, 2026), needs assessment workbook

The Council's needs assessment for 2031, the region as a whole: the signals its adequacy model GENESYS hands its capital expansion model OptGen, as a planning reserve margin per season (a fraction above OptGen's seasonal peak load) and an annual firm-energy adequacy reserve margin (a fraction of load), per need study. The existing system without new resources falls short in every study (Reminder About Adequacy Metrics!J20); the margins are what OptGen must build to, not an observation, not a utility's requirement and not a forecast. Loads, resource contributions and the need are MW as the column headers print them; the firm-energy adjustment is aMW (the Council's unit, MWa here) and the average monthly load it is divided by is recorded in MWa; margins are fractions; the monthly duration VaR and its threshold are hours. The five studies share the existing system and load; the load is the High Growth pathway's (Appendix M, PDF page 21). Studies are never averaged, seasons and months never summed, and a fraction, MW and MWa are never combined. The study is final (the file name says so); the plan it supports is draft 2026-3, open for comment through October 16, 2026.

The atlas reads this workbook and describes what it holds; it publishes no copy of it and no table of its rows.

2021 Northwest Power Plan demand forecast workbook, 2021powerplan_DemandData.xlsx (Last-Modified 2022-03-02): sheet All Total Energy Table, the region's annual system load with losses, net of cogeneration, in aMW, 1988-2050, for 39 model runs dated 2020-07-30 and 2020-08-12

Northwest Power and Conservation Council, 2021 Northwest Power Plan (document 2022-3, March 10, 2022), demand forecast workbook

The Council's regional load forecast for the 2021 Plan, in average megawatts (aMW, this atlas's MWa; All Total Energy Table!G3). A price-effect forecast: it leaves out load reductions from new conservation by design, and each climate run carries one climate model's temperatures for the year, so it is not a forecast of metered load. The expectations ledger shows the nine runs the plan's printed range is drawn from, as printed, beside no computed difference, range or average; the other thirty runs are named there by family and carry no values.

The atlas cites single cells of this workbook in the expectations ledger; it publishes no copy of it and no table of its rows.

2021 Northwest Power Plan, Council document 2022-3, cover dated March 10, 2022 (Last-Modified 2022-03-10): the adopted plan, whose page 24 prints the range of energy needs in 2041

Northwest Power and Conservation Council, 2021 Northwest Power Plan (document 2022-3, March 10, 2022)

The adopted plan: the ledger cites its cover date as the forecast's issue date and its page 24 range as the reason the nine runs it shows are the plan's forecast. Nothing is read from the file by the build.

The atlas cites the plan's cover date and page 24 range; it publishes no copy of the document.

Final RHWM process outputs for the FY 2026-2028 rate period (published 2024-10-01): Table 2 RHWMs (sheet RHWM) and Table 3 Above-RHWM Load Service (sheet AboveRHWMLoad), one row per preference customer keyed by BES id

Bonneville Power Administration, Final 2026 RHWM outputs (2024-10-01)

BPA's Rate Period High Water Mark for each preference customer for FY 2026-2028 (October 2025 to September 2028), with the customer's Regional Dialogue Contract High Water Mark as used that rate period, its forecast total retail load less new large single loads and existing resources for each fiscal year, and the load BPA forecast above the RHWM. Average megawatts (aMW, the atlas's MWa): the sheet labels its resource column aMW (RHWM!M3) and forms the others from it by subtraction. An RHWM caps how much power a customer may buy at the Tier 1 rate; it is not a delivery, a purchase or a bill, and the forecasts are BPA's of 2024, not measurements.

Provider of Choice FY 2026 Contract High Water Mark Calculation, final CHWMs (released 2026-05-28, Info!C4): sheet Calculation, one row per customer keyed by BES id, "Note: All data is in aMW" (Calculation!B5)

Bonneville Power Administration, Provider of Choice FY 2026 CHWM Calculation, final CHWMs (2026-05-28)

BPA's one-time FY 2026 calculation of each customer's Provider of Choice Contract High Water Mark, in aMW (Calculation!B5), for contracts delivering power from October 1, 2028. BPA published the final CHWMs on 2026-05-28 after declining the one dispute filed (Wells Rural Electric, 2026-05-14), and states it will not revisit the calculation once final CHWMs are published, though CHWMs may be adjusted in later rate periods under the contracts (CHWM Implementation Policy, 2025-08-14, pages 2-3). A CHWM is a maximum eligibility to buy at the Tier 1 rate over a future contract period, not a current delivery right and not a purchase.

Final Contract Demand Quantities in kW (Sheet1!D1), effective 2026-05-01 (Sheet1!D2), one row per Regional Dialogue customer keyed by BES id and one column per month October to September, with the product code and 21 notes on annexations and product conversions

Bonneville Power Administration, Final CDQs (effective 2026-05-01)

Contract Demand Quantities in kilowatts by month, as BPA revised them effective 2026-05-01: a demand amount in each customer's Regional Dialogue contract, one per month of the year, not a measured peak, not energy and not a purchase. Twelve monthly kW values are never added together. Note 19 of the sheet records Snohomish, Emerald and Clark PUDs converting from Slice/Block to Load Following on October 1, 2025.

Load Following customers' measured FY2024 and FY2025 total retail load (energy MWh and customer system peak) and dedicated resources by month, prepared 2026-07-23 and published by July 31 under Section 17 of the Load Following CHWM contracts

Bonneville Power Administration, Load Following Customers' Total Retail Load and Dedicated Resources data (2026-07-31)

Measured data for the customers Section 17 of the Load Following CHWM contracts covers, for the two previous fiscal years; it carries no forecast. The atlas reads its customer column only, to record which customers it does not list.

Regional Dialogue Long-Term (20 year) Contracts, Customer Products List dated 2022-12-30 (PDF, 4 pages): each customer's product

Bonneville Power Administration, Regional Dialogue Customer Products List (2022-12-30)

The product each Regional Dialogue customer bought on the list's date, as BPA printed it. The list writes Slice for customers on the Slice/Block product.

Regional Dialogue Long-Term (20 year) Contracts, Customer Products List dated 2025-10-01 (PDF, 4 pages): each customer's product

Bonneville Power Administration, Regional Dialogue Customer Products List (2025-10-01)

The product each Regional Dialogue customer bought on the list's date, as BPA printed it.

Letter from BPA's Vice President, NW Requirements Marketing, to regional customers, 2024-08-19 (PDF, 1 page): BPA allows Emerald, Clark and Snohomish PUDs to change from Slice/Block to Load Following effective 2025-10-01

Bonneville Power Administration, product change close-out letter (2024-08-19)

BPA's decision on three customers' requests to change their Regional Dialogue purchase obligation from the Slice/Block product to the Load Following product, effective October 1, 2025.

2025 Annual Report (PDF, 76 pages, created 2026-04-10): Management's Discussion and Analysis (unaudited) and the audited combined financial statements and notes for the years ended December 31, 2025 and 2024

Snohomish County PUD, 2025 Annual Report (April 2026)

The utility's own account of its calendar years. The BPA purchase dollars are from Management's Discussion and Analysis, which the report marks unaudited, rounded there to the million; the audited statements carry purchased power in total, not by supplier. The report gives BPA's share of its energy only as approximate percentages and no BPA megawatt-hours for the same years, so no price per MWh is derived.

The atlas quotes two dollar figures and two statements from the report on the utility's organization page, each with its page; it publishes no copy of the report.

Financial Statements as of and for the Years Ended December 31, 2025 and 2024, with Required Supplementary Information, Other Information and the Independent Auditors' Report (PDF, 99 pages, created 2026-04-30)

Seattle City Light, 2025 Financial Statements (April 2026)

The utility's own account of its calendar years. Its BPA dollars and its BPA energy as an average in MWa are in the audited Note 20; its BPA energy in MWh is in the unaudited Other Information. The operating statement's 'Long-term purchased power—Bonneville and other' (page 26) adds other suppliers to BPA and is not used.

The atlas quotes the BPA rows of Note 20 and of the Historical Energy Resources table on the utility's organization page, each with its page; it publishes no copy of the statements.

Financial Statements as of and for the Years Ended December 31, 2016 and 2015, with Required Supplementary Information, Other Information and the Independent Auditors' Report (PDF, 88 pages, created 2017-05-01); at seattle.gov by its address, not linked from the current publication pages

Seattle City Light, 2016 Financial Statements (May 2017)

The utility's own account of calendar years 2016 and 2015. Note 18's table (page 69) prints the Bonneville Block and Bonneville Slice rows above their subtotal, Long-term purchase power—Bonneville, in dollars and average megawatts; the unaudited Historical Energy Resources table (page 83) gives BPA energy in MWh. The note ties Residential Exchange billing credits to both agreements (page 68) without placing them in or out of the Bonneville row.

The atlas quotes the BPA rows of Note 18 and of the Historical Energy Resources table, and one credit sentence, on the utility's organization page, each with its page; it publishes no copy of the statements.

Financial Statements as of and for the Years Ended December 31, 2018 and 2017, with Required Supplementary Information, Other Information and the Independent Auditors' Report (PDF, 93 pages, created 2019-05-20); at seattle.gov by its address, not linked from the current publication pages

Seattle City Light, 2018 Financial Statements (May 2019)

The utility's own account of calendar years 2018 and 2017. Note 19's table (page 74) prints the Bonneville Block and Bonneville Slice rows above their subtotal, Long-term purchased power-Bonneville (Slice printed as a dash for 2018, after the Department stopped buying Slice on October 1, 2017); the unaudited Historical Energy Resources table (page 88) gives BPA energy in MWh. The note ties Residential Exchange billing credits to both agreements (page 73), and the unaudited Management's Discussion ties Slice true-up credits to the Bonneville cost (pages 15 and 16).

The atlas quotes the BPA rows of Note 19 and of the Historical Energy Resources table, and the credit sentences, on the utility's organization page, each with its page; it publishes no copy of the statements.

Official Statement dated June 29, 2021 for the Municipal Light and Power Improvement and Refunding Revenue Bonds, 2021, Series A, with its addendum (PDF, 317 pages); Appendix C is the Department's audited 2020 Financial Statements (years ended December 31, 2020 and 2019), PDF pages 205-306; at seattle.gov by its address, not linked from the current investor-relations page

Seattle City Light, 2021A Official Statement, Appendix C: 2020 Audited Financial Statements (June 2021)

The 2020 statements as the official statement reprints them, for calendar years 2020 and 2019. Note 19's table (page 78 of the statements) gives the Bonneville row in dollars and average megawatts; the unaudited Historical Energy Resources table (page 90) gives BPA energy in MWh and heads its 2019 column '2019(d)': '(d) Certain numbers were corrected in 2020.' Only Appendix C is read; the official statement's own tables are not used.

The atlas quotes the BPA rows of Appendix C's Note 19 and Historical Energy Resources table, and one credit sentence, on the utility's organization page, each with its page; it publishes no copy of the official statement.

Financial Statements as of and for the Years Ended December 31, 2022 and 2021, with Required Supplementary Information, Other Information and the Independent Auditors' Report (PDF, 104 pages, created 2023-05-05)

Seattle City Light, 2022 Financial Statements (May 2023)

The utility's own account of calendar years 2022 and 2021. Note 20's table (page 83) gives the Bonneville row in dollars and average megawatts; the unaudited Historical Energy Resources table (page 97, printed as an image) gives BPA energy in MWh. The unaudited Management's Discussion ties the 2022 fall in long-term purchased power mostly to BPA's Power Reserves Distribution Clause credit (page 20).

The atlas quotes the BPA rows of Note 20 and of the Historical Energy Resources table, and one credit sentence, on the utility's organization page, each with its page; it publishes no copy of the statements.

Financial Statements as of and for the Years Ended December 31, 2024 and 2023, with Required Supplementary Information, Other Information and the Independent Auditors' Report (PDF, 102 pages, created 2025-05-02)

Seattle City Light, 2024 Financial Statements (May 2025)

The utility's own account of calendar years 2024 and 2023; the atlas reads 2023 from it (2024 is read from the 2025 statements, which print the same figures). Note 20's table (page 81, printed as an image) gives the Bonneville row in dollars and average megawatts; the unaudited Historical Energy Resources table (page 95, an image) gives BPA energy in MWh. The unaudited Management's Discussion ties the 2023 rise in long-term purchased power to a reduced BPA Power Reserves Distribution Clause credit (page 21).

The atlas quotes the 2023 BPA rows of Note 20 and of the Historical Energy Resources table, and one credit sentence, on the utility's organization page, each with its page; it publishes no copy of the statements.

Official Statement dated June 23, 2026 for the Municipal Light and Power Improvement and Refunding Revenue Bonds, Series 2026A (PDF, 240 pages)

The City of Seattle, Official Statement for the Municipal Light and Power Improvement and Refunding Revenue Bonds, Series 2026A (June 2026)

The City's offering document for City Light's 2026A bonds. The atlas reads one passage (page B-28): the next Power Sales Agreement with BPA, under the Provider of Choice policy, runs October 1, 2028 through September 30, 2044, and City Light has elected BPA's Slice/Block product for its term. Its BPA dollar and energy tables (pages B-21 to B-22) are not mixed with the statements': its BPA dollars are net of the South Fork Tolt billing credit, and its 2022 MWh differs from the statements'.

The atlas quotes one passage on the Provider of Choice agreement on the utility's organization page, with its page; it publishes no copy of the official statement.

Basemap: water, boundaries, places and roads

Protomaps basemap © OpenStreetMap contributors (ODbL); Natural Earth. Protomaps planet build 20260916 extracted to the four states plus a buffer to zoom 12, self-hosted with its glyphs and sprites and styled with @protomaps/basemaps@5.7.2 (BSD-3-Clause); content hash 8c39c7e76b4f8ceb.

Orientation only: water, boundaries, places and roads from OpenStreetMap as packaged by Protomaps. No electricity feature on the basemap is an atlas fact; power lines and substations drawn by OpenStreetMap are not shown.

2024 cartographic state boundaries

U.S. Census Bureau, 2024 cartographic boundary files, 1:500,000. Selected western states; simplified for display and transformed from NAD83 to CRS84. Geographic context only.

These outlines are designed for small-scale thematic mapping. They do not establish electricity service, reporting membership, or operational connections.