Monthly net generation by plant

Period

2015-01–2024-12

One row is

published plant x report month, for plant-years reported monthly

Built from source rows of

plant x prime mover x energy source x report month

Evidence and method

reported · derivedPublished only for plants whose reporting_frequency_code is M or AM; annual (A) reporters' monthly values are EIA estimates and are not published as a monthly curve

Origin

U.S. EIA Form 923 Schedule 3 monthly (generation and fuel, nuclear combined at plant/prime-mover grain) ↗Source notice and licenceLicence: CC-BY-4.0

Built from source rows of

plant x report_date (annual)

Evidence and method

reported · derived

Origin

U.S. EIA Form 860 (mix of EIA forms, harvested) ↗Source notice and licenceLicence: CC-BY-4.0

Edition in this release

PUDL v2026.9.0 (embedded 2026.8.1.dev50) · out_eia__yearly_plants · retrieved 2026-09-29PUDL v2026.9.0 (embedded 2026.8.1.dev50) · out_eia923__monthly_generation_fuel_combined · retrieved 2026-09-29

Download

generation_plant_month.parquet ↓25,106 rows · 79 KB

• Listed without a reported valueListed on EIA-923 for the month with no net generation value on any row; published as null with quality missing
  0 plant-months
• annual_reporterPublished plants whose EIA-923 respondent reported annually for the year. Their monthly values are EIA estimates, so they have no rows here
  3,461 plant-years
• frequency_unknownPublished plants with no usable reporting frequency for the year; excluded because the build cannot tell a reported month from an estimated one
  1,973 plant-years
• No row in the sourceMonths of monthly reporters' plant-years with no EIA-923 row. The inventory is one snapshot, so the table cannot tell a plant not yet built or already retired from one that did not report
  286 plant-months
• Outside the atlas frameEIA-923 monthly rows in the window for plants outside the frame authorities and the core states
  1,628,027 source rows
• In the source, not yet includedEIA-923 monthly rows for published plants in years outside the window: present in the source edition, not yet included: 2001–2014, 2025–2026
  81,780 source rows

Publisher

EIA releases Form EIA-923 data monthly, and once a year as final annual data.www.eia.gov/electricity/data/eia923/ ↗

Delay

On the checked date EIA's latest monthly release, dated August 26, 2026, carried June 2026 data; final 2025 annual data was released September 14, 2026, and the next annual release was listed as September 2027 for 2026 final data.www.eia.gov/electricity/data/eia923/ ↗

This atlas

The atlas reads EIA-923 through PUDL, which Catalyst Cooperative publishes as quarterly versioned releases. Each atlas release pins one PUDL version, named under edition; the table changes only when that pin moves. No timed refresh.docs.catalyst.coop/pudl/en/v2026.9.0/data_access.html ↗

• frequency.raw_supplement{"plant_years_by_source":[{"pudl":26,"raw":431,"year":2015},{"pudl":26,"raw":449,"year":2016},{"pudl":25,"raw":490,"year":2017},{"pudl":526,"raw":0,"year":2018},{"pudl":536,"raw":0,"year":2019},{"pudl":590,"raw":0,"year":2020},{"pudl":597,"raw":0,"year":2021},{"pudl":611,"raw":0,"year":2022},{"pudl":617,"raw":0,"year":2023},{"pudl":635,"raw":18,"year":2024}],"workbooks":{"2015":{"locator":"EIA923_Schedules_2_3_4_5_M_12_2015_Final_Revision.xlsx; sheet=Page 6 Plant Frame; column=Reporting Frequency","rows":7547,"unexpected_codes":{}},"2016":{"locator":"EIA923_Schedules_2_3_4_5_M_12_2016_Final_Revision.xlsx; sheet=Page 6 Plant Frame; column=Reporting Frequency","rows":8149,"unexpected_codes":{}},"2017":{"locator":"EIA923_Schedules_2_3_4_5_M_12_2017_Final_Revision.xlsx; sheet=Page 6 Plant Frame; column=Reporting Frequency","rows":8714,"unexpected_codes":{}},"2024":{"locator":"EIA923_Schedules_2_3_4_5_M_12_2024_Final.xlsx; sheet=Page 6 Plant Frame; column=Reporting Frequency","rows":13267,"unexpected_codes":{"AM/A":151}}}}
  Passed

No corrections apply to this dataset in this release. Earlier editions: not available (earlier releases did not retain per-dataset edition comparisons).