Operational reserve quantities

PJM's Operational reserve quantities.

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_operational_reserves/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 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	409	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "RTO Contingency (Primary) Reserve Requirement", "reserve_mw": 1969.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	410	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "RTO Contingency (Primary) Reserve Total", "reserve_mw": 5546.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	411	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "RTO Operating (30 Min) Reserve Total", "reserve_mw": 16119.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	412	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "RTO Primary Reserve Requirement from Markets", "reserve_mw": 2620.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	413	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "RTO Synchronized Reserve Requirement", "reserve_mw": 1313.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	400	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO Synchronized Reserve Requirement", "reserve_mw": 1310.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	401	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO Synchronized Reserve Requirement from Markets", "reserve_mw": 1810.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	402	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO Synchronized Reserve Total", "reserve_mw": 3194.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	403	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "Mid-Atlantic/Dominion Contingency (Primary) Reserve Total", "reserve_mw": 2682.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	404	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "Mid-Atlantic/Dominion Operating (30 Min) Reserve Total", "reserve_mw": 8483.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	405	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "Mid-Atlantic/Dominion Primary Reserve Requirement from Markets", "reserve_mw": 2240.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	406	{"datetime_beginning_utc": "2026-10-11T04:15:01", "datetime_beginning_ept": "2026-10-11T00:15:01", "reserve_name": "Mid-Atlantic/Dominion Synchronized Reserve Requirement from Markets", "reserve_mw": 1557.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	393	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "Mid-Atlantic/Dominion Synchronized Reserve Requirement from Markets", "reserve_mw": 1557.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	376	{"datetime_beginning_utc": "2026-10-11T04:15:46", "datetime_beginning_ept": "2026-10-11T00:15:46", "reserve_name": "RTO Synchronized Reserve Total", "reserve_mw": 3194.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	395	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO 30 Minute Reserve Requirement from Markets", "reserve_mw": 3190.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	396	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO Contingency (Primary) Reserve Requirement", "reserve_mw": 1966.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	397	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO Contingency (Primary) Reserve Total", "reserve_mw": 5368.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	398	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO Operating (30 Min) Reserve Total", "reserve_mw": 15953.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	399	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "RTO Primary Reserve Requirement from Markets", "reserve_mw": 2620.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	394	{"datetime_beginning_utc": "2026-10-11T04:15:16", "datetime_beginning_ept": "2026-10-11T00:15:16", "reserve_name": "Mid-Atlantic/Dominion Synchronized Reserve Total", "reserve_mw": 1269.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	382	{"datetime_beginning_utc": "2026-10-11T04:15:31", "datetime_beginning_ept": "2026-10-11T00:15:31", "reserve_name": "RTO 30 Minute Reserve Requirement from Markets", "reserve_mw": 3190.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	385	{"datetime_beginning_utc": "2026-10-11T04:15:31", "datetime_beginning_ept": "2026-10-11T00:15:31", "reserve_name": "RTO Operating (30 Min) Reserve Total", "reserve_mw": 15952.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	384	{"datetime_beginning_utc": "2026-10-11T04:15:31", "datetime_beginning_ept": "2026-10-11T00:15:31", "reserve_name": "RTO Contingency (Primary) Reserve Total", "reserve_mw": 5384.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	386	{"datetime_beginning_utc": "2026-10-11T04:15:31", "datetime_beginning_ept": "2026-10-11T00:15:31", "reserve_name": "RTO Primary Reserve Requirement from Markets", "reserve_mw": 2620.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146
2026-10-11 04:22:48.200075	operational_reserves	2026-10-11	https://api.pjm.com/api/v1/operational_reserves?datetime_beginning_utc=10%2F11%2F2026+04%3A00+to+10%2F12%2F2026+03%3A59&startRow=1&rowCount=5000	operational_reserves-page-1.json	027fde0cbbeb13810b5f920f7c5d49cc52a4122a6ff231d05b37e34628e26ad7	383	{"datetime_beginning_utc": "2026-10-11T04:15:31", "datetime_beginning_ept": "2026-10-11T00:15:31", "reserve_name": "RTO Contingency (Primary) Reserve Requirement", "reserve_mw": 1967.0}	{"last-modified": "Sun, 11 Oct 2026 04:22:48 GMT", "content-type": "application/json", "totalRows": 1196, "startRow": 1}	2026-10-11 04:22:48.324803	2026-10-11 04:22:49.206146

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Coverage: 100.0%Days with data: 9Gaps: 0

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Related ancillary services data

Related ancillary services data
Dataset	Description
Daily generation capacityPJM · day publication	PJM's Daily generation capacity. 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.
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.
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.