About the atlas

Power plants of one megawatt and more (the EIA survey’s threshold; smaller and customer-sited generation appears as utility-reported distributed totals) from the U.S. Energy Information Administration’s 2024 inventory, their reported 2024 output, the organizations that operate and own them, balancing authorities, Bonneville Power Administration transmission lines and approximate utility service territories. Every number carries its unit, period and source. A value the source did not report stays missing; it is never shown as zero.

The map opens with plants located in Washington, Oregon, Idaho and Montana. Northwest grid totals use the separately defined set of balancing authorities that report the region’s demand and generation to EIA. A balancing authority keeps supply and demand in balance for its area and reports its plants; it is an accounting boundary, not a wire to any customer. The state regions list plants by physical location instead, whichever authority they report to. The two views overlap but are not the same population, and the atlas never mixes them in one total.

Monthly inventory records, live readings, utility finances and policy records have their own dates beside the annual baseline. Each release keeps its numbers at a permanent address; the source and date show which record you are reading.

1. Publishers45 publishersThe agencies, utilities and data cooperatives that publish the records the atlas reads.
2. Sources159 sources, 134 with files acquired for this releaseOne published dataset or curated list each, with its rights and the exact files this release was built from.
3. Build212 of 214 checks passedOne run that reads every source, joins and checks them, and writes the whole release at once.
4. Products13 families of filesThe families of files the release contains.
5. Views11 viewsThe pages of this site and the product families each one shows or links.

Data & definitions includes datasets, terms, methods and downloads. Found an error or a broken source? corrections@jonahgolden.com: include the page address, what looks wrong and a supporting source when you have one.

Independent, non-commercial. Release 20260929T050546Z-51ae0f7d3c78.