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catalyst.coop/

PUDL (Public Utility Data Liberation) open energy database

Freeauth: noneCC-BY-4.0#energy#electricity#power-plants#united-states#emissions✓ verified Nov 12, 2026

PUDL (Public Utility Data Liberation) open energy database

Catalyst Cooperative's PUDL project cleans, links and standardizes public US electricity-sector data (EIA, FERC and EPA filings on power plant fuel use, generation, operating costs and emissions) and publishes it as Parquet, DuckDB and SQLite files, with a browser data viewer and nightly and stable builds.

Required Attribution:

Required under CC BY 4.0: credit Catalyst Cooperative and the PUDL project.

Coverage

US electric utilities and power plants, yearly, monthly and hourly series depending on the source. The project page says PUDL "takes publicly available information about the US electricity sector and makes it publicly usable." Outputs are on the PUDL Data Viewer, cloud storage and Zenodo archives.

Verdict

Keyless Parquet, DuckDB and SQLite outputs plus a web data viewer. Licensed CC-BY-4.0: the repository says "The PUDL data and documentation are published under the Creative Commons Attribution License v4.0 (CC-BY-4.0)." and the software is MIT. Rate limits: Not stated. Signal Lab links only.

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