Day-ahead settlement point prices from ERCOT's own official Public API, across all 15 real confirmed trading hubs and load zones. Per our own legal review, ERCOT's general Website Terms of Use grants an explicit right to use, reproduce, and redistribute public content, including in "compilations, charts, and analyses" - the strongest, most explicit derived-analytics grant of any ISO/RTO source we reviewed.
| Trading hubs | 7 (HB_HOUSTON, HB_NORTH, HB_SOUTH, HB_WEST, HB_PAN, HB_BUSAVG, HB_HUBAVG) |
| Load zones | 8 (LZ_HOUSTON, LZ_NORTH, LZ_SOUTH, LZ_WEST, LZ_AEN, LZ_CPS, LZ_LCRA, LZ_RAYBN) |
| History depth | ~3.5 years (Jan 2023 onward), via archive backfill + daily scheduled refresh |
Raw settlement-price series are not yet exposed via
/v1/series (that endpoint currently serves EIA data
only) - the ERCOT spark
spread factor built from this data is already queryable via
/v1/factors.
Full validation methodology and every real number behind these verdicts: FACTOR_CATALOGUE.md.
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