Overview
This dataset reports the total quantity of ancillary services ERCOT procured in its Day-Ahead Market, broken out by product (such as Regulation Up, Regulation Down, Responsive Reserve, ECRS, and Non-Spinning Reserve) for each delivery hour. These figures show how much reserve capability ERCOT set aside to keep supply and demand balanced and to respond to contingencies, separate from the energy cleared for actual generation. Paired with the per-product clearing prices, the cleared volumes let traders, researchers, and the public see how reserve requirements shift hour to hour and how much of the market's capacity is committed to grid reliability rather than energy. The data comes from ERCOT report NP4-532-CD (DAM Total AS Sold) and updates with each day-ahead market run.
Use with MCP
This table is available through the signed-in, read-only Ask the Grid MCP server. Connect a market below, then use search_data or describe_data to load its query contract before calling query_data.
Schema7
event_timeDateTime64(6, 'UTC')as_typeLowCardinality(String)total_mwNullable(Float64)dst_flagNullable(Bool)emil_idNullable(String)doc_idNullable(Int64)ingested_atDateTime64(6, 'UTC')Sample rows
| event_time | as_type | total_mw | dst_flag | emil_id | doc_id | ingested_at |
|---|---|---|---|---|---|---|
| 2026-08-11 05:00:00.000000 | RRSUF | 784.6 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | RRSPF | 1312.8 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | RRSFF | 8.1 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | REGUP | 243 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | REGDN | 293 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | ONNS | 2164.7 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | OFFNS | 2249.9 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | OFFEC | 119 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | ECRSS | 1106.8 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 05:00:00.000000 | ECRSM | 238.2 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | RRSUF | 791.6 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | RRSPF | 1313.4 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | RRSFF | 7.8 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | REGUP | 295.3 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | REGDN | 270 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | ONNS | 2223 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | OFFNS | 1770.7 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | OFFEC | 118.8 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | ECRSS | 1249.6 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 04:00:00.000000 | ECRSM | 303.5 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 03:00:00.000000 | RRSUF | 796.1 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 03:00:00.000000 | RRSPF | 1313.3 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 03:00:00.000000 | RRSFF | 7.9 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 03:00:00.000000 | REGUP | 295.3 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |
| 2026-08-11 03:00:00.000000 | REGDN | 362 | false | ∅ | ∅ | 2026-08-11 03:15:18.949055 |