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Rated power of the operating generators, in MW. A rating, not annual output. Definition ↗ Electricity produced after the plant’s own use. A negative value means it used more electricity than it produced. Definition ↗ Annual stack CO2 in metric tonnes that a plant's monitored units filed with EPA (Part 75 continuous emissions monitoring), shown on the map only where every combustion generator at the plant is monitored. A partly monitored plant carries its monitored units' mass on its own page and no map quantity; a thermal plant outside EPA's programme and a plant with no combustion unit carry a status, never zero. The sum of listed plants is what those plants filed, not a regional total or a carbon footprint. Definition ↗
RegionFour states
RegionPlants physically located in the selected states. Search for a balancing authority to see its reporting area instead.Definition ↗
ResourceAll
ResourceThe energy source or storage technology used by a plant.Definition ↗
StatusOperating, August 2026
Inventory statusThe newest complete monthly inventory, with dated status and capacity changes beside the annual baseline totals.Definition ↗ As of the August 2026 EIA-860M inventory, over the 2024 baseline plants; totals stay at the baseline.
Layers
Plants
Transmission Avista’s own map, retrieved 2026-09-29: drawn by the voltage it files, beside HIFLD and never in its place; status is counted on its page, not drawn. Counts and comparison ↗
Line voltage Classes are each source's own field: BPA's operating voltage as published (its raw field declares no unit), HIFLD's compiled voltage, inferred where flagged, and the voltage Avista files for its own lines. A line whose source states no voltage is drawn only while “Voltage not stated” is ticked, never dropped silently; a utility files none for a de-energized line. Voltage is not capacity.
Projects
Distribution Portland General Electric’s own polygons, edition 2026-07-22: each feeder buffered by 500 feet, not a service area and not the feeder’s route. Figures and flags ↗
Live flows
Boundaries
Opens the latest supported release. Pins this release, period and interpretation. All 634 filtered plants, with raw facts and sources. Suggest a field note
Totals

Which resources make up the operating generating capacity in the four states?

Plants located in the four states

CapacityRated power of the operating generators, in MW. A rating, not annual output.Definition ↗ 59,405.3 MW 2024 inventory 59,266.8 MW across 634 listed plants
GenerationElectricity produced after the plant’s own use. A negative value means it used more electricity than it produced.Definition ↗ 213,690,672 MWh 2024 calendar year 38 plants have no reported MWh Partial coverage 212,343,118 MWh across 634 listed plants
Reported CO2Annual stack CO2 in metric tonnes that a plant's monitored units filed with EPA (Part 75 continuous emissions monitoring), shown on the map only where every combustion generator at the plant is monitored. A partly monitored plant carries its monitored units' mass on its own page and no map quantity; a thermal plant outside EPA's programme and a plant with no combustion unit carry a status, never zero. The sum of listed plants is what those plants filed, not a regional total or a carbon footprint.Definition ↗ 31,327,991 t CO2 2024 calendar year, fully monitored plants only 27 fully monitored plants filed this; 56 thermal plant outside EPA monitoring; 550 no combustion unit; 1 partly monitored: mass on the plant page, no map quantity. Not a regional total.

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