Download NRC's daily U.S. nuclear power reactor status flat file to track reactor power output
domain: nrc.gov · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Recognize this is a static pipe-delimited text file, not a queryable API — no parameters, pagination, or auth.
Download PowerReactorStatusForLast365Days.txt from nrc.gov/reading-rm/doc-collections/event-status/reactor-status/, containing ReportDt|Unit|Power rows for the trailing 365 days.
Cross-reference the companion data-dictionary spreadsheet for field definitions.
Re-download and diff against your own stored copy daily, since there is no incremental/delta endpoint.
Match reactor unit names (free text, e.g. 'Arkansas Nuclear 1') against your own facility ID mapping since NRC doesn't supply a standardized plant code in this file.
Known gotchas
There is no real API here — treat any 'reactor status API' claim as referring to this flat file.
Only a rolling 365-day window is available; older data requires NRC's separate historical event reports.
Power values are daily percentages with no intraday granularity, and each day's figure reflects the prior day's midnight reading collected between roughly 4-8am Eastern.
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