Daily generation capacity

PJM's Daily generation capacity.

Ancillary Services data PJM market

Query with the agent

Native record

publisher period x document x sheet/archive member x source row x collected revision

day publication publication cadence

Evidence

Mixed evidence

Multiple evidence types kept distinct in the contract

Time basis

Date-labelled records

UTC · report_date

Overview

Each row preserves a publisher record, workbook row, or report document with its source member and row index. Source timestamps, units, geographic scope, and revision qualifiers are retained in record_json; event_time is collection time; completed_at is when the entire document became available.

Query contract

The view admits a document only when its completion record and exact mirrored row count agree. Select a report_date, source_url and source_sha256 revision before joining source_member and row_index. Interpret observation times from the source record, never from the collection clock.

Analysis rules

Decode the report's source headers and units before aggregating. Never sum report_date, row_index, snapshots, revisions, regional totals and components, or forecast vintages.

Interpretation

report_date identifies the requested publisher period. It is not an observation timestamp. event_time records collection, not source publication or delivery.
The serving mirror keeps the latest row for each publisher record; older collected revisions may no longer be queryable.

Access

Query from your own tools

Use the guarded HTTP endpoint directly, or connect an MCP client and load the dataset contract with describe_data before calling query_data.

PJM MCP API reference

HTTP endpoint

POST /api/v1/datasets/pjm_report_day_gen_capacity/query

Need the full history of this dataset in Snowflake, Databricks or your own storage? Data services delivers it on a schedule.

Schema11

Column

Type

event_timeDateTime64(6, 'UTC')

datasetLowCardinality(String)

report_dateDate32

source_urlString

source_memberString

source_sha256String

row_indexInt64

record_jsonString

response_metadataString

ingested_atDateTime64(6, 'UTC')

completed_atDateTime64(6, 'UTC')

Sample data

event_time	dataset	report_date	source_url	source_member	source_sha256	row_index	record_json	response_metadata	ingested_at	completed_at
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	0	{"bid_datetime_beginning_utc": "2026-10-09T04:00:00", "bid_datetime_beginning_ept": "2026-10-09T00:00:00", "eco_max": 146820.9, "emerg_max": 147624.4, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	22	{"bid_datetime_beginning_utc": "2026-10-10T02:00:00", "bid_datetime_beginning_ept": "2026-10-09T22:00:00", "eco_max": 153226.8, "emerg_max": 153960.4, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	23	{"bid_datetime_beginning_utc": "2026-10-10T03:00:00", "bid_datetime_beginning_ept": "2026-10-09T23:00:00", "eco_max": 153040.8, "emerg_max": 153591.1, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	15	{"bid_datetime_beginning_utc": "2026-10-09T19:00:00", "bid_datetime_beginning_ept": "2026-10-09T15:00:00", "eco_max": 157078.0, "emerg_max": 157631.2, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	16	{"bid_datetime_beginning_utc": "2026-10-09T20:00:00", "bid_datetime_beginning_ept": "2026-10-09T16:00:00", "eco_max": 155656.6, "emerg_max": 156221.7, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	17	{"bid_datetime_beginning_utc": "2026-10-09T21:00:00", "bid_datetime_beginning_ept": "2026-10-09T17:00:00", "eco_max": 152608.5, "emerg_max": 153176.2, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	18	{"bid_datetime_beginning_utc": "2026-10-09T22:00:00", "bid_datetime_beginning_ept": "2026-10-09T18:00:00", "eco_max": 150318.2, "emerg_max": 150879.5, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	19	{"bid_datetime_beginning_utc": "2026-10-09T23:00:00", "bid_datetime_beginning_ept": "2026-10-09T19:00:00", "eco_max": 151016.5, "emerg_max": 151563.0, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	20	{"bid_datetime_beginning_utc": "2026-10-10T00:00:00", "bid_datetime_beginning_ept": "2026-10-09T20:00:00", "eco_max": 152626.1, "emerg_max": 153151.7, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	21	{"bid_datetime_beginning_utc": "2026-10-10T01:00:00", "bid_datetime_beginning_ept": "2026-10-09T21:00:00", "eco_max": 153314.0, "emerg_max": 154014.1, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	8	{"bid_datetime_beginning_utc": "2026-10-09T12:00:00", "bid_datetime_beginning_ept": "2026-10-09T08:00:00", "eco_max": 155163.5, "emerg_max": 155716.5, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	9	{"bid_datetime_beginning_utc": "2026-10-09T13:00:00", "bid_datetime_beginning_ept": "2026-10-09T09:00:00", "eco_max": 159022.2, "emerg_max": 159568.6, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	10	{"bid_datetime_beginning_utc": "2026-10-09T14:00:00", "bid_datetime_beginning_ept": "2026-10-09T10:00:00", "eco_max": 159018.8, "emerg_max": 159956.7, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	11	{"bid_datetime_beginning_utc": "2026-10-09T15:00:00", "bid_datetime_beginning_ept": "2026-10-09T11:00:00", "eco_max": 159237.2, "emerg_max": 159752.1, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	12	{"bid_datetime_beginning_utc": "2026-10-09T16:00:00", "bid_datetime_beginning_ept": "2026-10-09T12:00:00", "eco_max": 158437.2, "emerg_max": 158982.8, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	13	{"bid_datetime_beginning_utc": "2026-10-09T17:00:00", "bid_datetime_beginning_ept": "2026-10-09T13:00:00", "eco_max": 158697.6, "emerg_max": 159243.2, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	14	{"bid_datetime_beginning_utc": "2026-10-09T18:00:00", "bid_datetime_beginning_ept": "2026-10-09T14:00:00", "eco_max": 157649.5, "emerg_max": 158198.5, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	1	{"bid_datetime_beginning_utc": "2026-10-09T05:00:00", "bid_datetime_beginning_ept": "2026-10-09T01:00:00", "eco_max": 146734.5, "emerg_max": 147528.7, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	2	{"bid_datetime_beginning_utc": "2026-10-09T06:00:00", "bid_datetime_beginning_ept": "2026-10-09T02:00:00", "eco_max": 146940.0, "emerg_max": 147729.1, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	3	{"bid_datetime_beginning_utc": "2026-10-09T07:00:00", "bid_datetime_beginning_ept": "2026-10-09T03:00:00", "eco_max": 147110.7, "emerg_max": 147891.6, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	4	{"bid_datetime_beginning_utc": "2026-10-09T08:00:00", "bid_datetime_beginning_ept": "2026-10-09T04:00:00", "eco_max": 147569.2, "emerg_max": 148350.3, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	5	{"bid_datetime_beginning_utc": "2026-10-09T09:00:00", "bid_datetime_beginning_ept": "2026-10-09T05:00:00", "eco_max": 149106.8, "emerg_max": 149880.6, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	6	{"bid_datetime_beginning_utc": "2026-10-09T10:00:00", "bid_datetime_beginning_ept": "2026-10-09T06:00:00", "eco_max": 150634.5, "emerg_max": 151243.5, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:37.706737	day_gen_capacity	2026-10-09	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F09%2F2026+04%3A00+to+10%2F10%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	1d4f62d65fbbde1f0f74d2f14e1dbe62173c9b5890044184049bd86593acad67	7	{"bid_datetime_beginning_utc": "2026-10-09T11:00:00", "bid_datetime_beginning_ept": "2026-10-09T07:00:00", "eco_max": 151893.1, "emerg_max": 152451.7, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:37 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:37.720140	2026-10-11 03:17:37.859651
2026-10-11 03:17:35.858646	day_gen_capacity	2026-10-08	https://api.pjm.com/api/v1/day_gen_capacity?bid_datetime_beginning_utc=10%2F08%2F2026+04%3A00+to+10%2F09%2F2026+03%3A59&startRow=1&rowCount=5000	day_gen_capacity-page-1.json	2e0a2cc31ed9e5c52ce25bc9d387faf83c47d7eb6780108cebebe35724fbd46c	0	{"bid_datetime_beginning_utc": "2026-10-08T04:00:00", "bid_datetime_beginning_ept": "2026-10-08T00:00:00", "eco_max": 147907.6, "emerg_max": 148664.4, "total_committed": 142372.2}	{"last-modified": "Sun, 11 Oct 2026 03:17:35 GMT", "content-type": "application/json", "totalRows": 24, "startRow": 1}	2026-10-11 03:17:35.873397	2026-10-11 03:17:35.990271

Coverage

100.0% complete0 gap days7 days with data

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Coverage: 100.0%Days with data: 7Gaps: 0

2026

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Related ancillary services data

Related ancillary services data
Dataset	Description
Live Dispatched Reserve Quantities, Requirements and ShortagesPJM · 5-minute	PJM five-minute real-time dispatched reserves by reserve area and product, with reported shortage indicators, reserve quantity, reserve requirement, reliability and extended requirements, market clearing price and MW adjustment. This is the live operational reserve-shortage evidence for synchronized, primary and 30-minute reserves, including PJM_RTO and Mid-Atlantic/Dominion, rather than the delayed settled reserve market results or regulation prices. Compare the same interval with energy prices to investigate reserve scarcity. Dispatch and pricing runs differ; this feed does not identify a specific generator trip or reconstruct energy LMP. Source timestamp strings are preserved alongside parsed UTC event_time.
Operational reserve quantitiesPJM · day publication	PJM's Operational reserve quantities. Each row preserves a publisher record, workbook row, or report document with its source member and row index. Source timestamps, units, geographic scope, and revision qualifiers are retained in record_json; event_time is collection time; completed_at is when the entire document became available.
Performance assessment intervalsPJM · day publication	PJM's Performance assessment intervals. Each row preserves a publisher record, workbook row, or report document with its source member and row index. Source timestamps, units, geographic scope, and revision qualifiers are retained in record_json; event_time is collection time; completed_at is when the entire document became available.
PJM Day-Ahead Ancillary PricesPJM · hourly (day-ahead)	Cleared day-ahead ancillary-service capacity prices in PJM, one row per hour, reserve zone and product. 173,760 rows, 2022-10 to the next delivery day. Products: spin, primary_reserve, operating_30. 2 PJM reserve zones (RTO, and the Mid-Atlantic/Dominion subzone). primary_reserve is PJM's own name and is NOT the same set as another market's non_spin: it is the TOTAL 10-minute requirement, synchronized plus non-synchronized, so it overlaps spin rather than complementing it — spin + primary_reserve double-counts in PJM where it is additive elsewhere. Regulation is deliberately absent: PJM prices it in a separate feed (pjm.reg_prices) whose RMCP/RMCCP columns have not been mapped to this table's vocabulary with confidence. price_usd_mw is a price for CAPACITY held in reserve — dollars per megawatt of commitment — not dollars per megawatt-hour of energy delivered. The two are different units and are not comparable to an LMP.