Area Control Error

PJM area control error in MW at its native fast operating cadence.

Interchange data PJM market

Query with the agent

Native record

PJM balancing area x sub-minute operating observation

sub-minute (~15-second source; polled every 5 minutes) publication cadence

Evidence

Observed market data

Published observations from the named source

Time basis

Point-in-time records

UTC · event_time

Overview

ACE is the signed instantaneous difference between scheduled and actual balancing obligation; it changes within seconds and should not be treated as a slowly varying reserve or energy quantity. Source: PJM Market Data.

Query contract

Read one canonical revision per area and event_time. For current state, require a recent event_time; ACE changes sign within seconds and an old value is not a valid substitute.

Analysis rules

Preserve the published sign. Do not convert ACE into reserve, energy, or interchange.
Use area='PJM' for the whole balancing authority.

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_area_control_error/query

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

Schema4

Column

Type

event_timeDateTime64(6, 'UTC')

areaLowCardinality(String)

ace_mwNullable(Float64)

ingested_atDateTime64(6, 'UTC')

Sample data

event_time	area	ace_mw	ingested_at
2026-10-19 02:56:46.000000	PJM	154.06	2026-10-19 02:57:16.853825
2026-10-19 02:56:31.000000	PJM	118.76	2026-10-19 02:57:16.853825
2026-10-19 02:56:16.000000	PJM	65.68	2026-10-19 02:57:16.853825
2026-10-19 02:56:01.000000	PJM	-44.65	2026-10-19 02:57:16.853825
2026-10-19 02:55:46.000000	PJM	-57.3	2026-10-19 02:57:16.853825
2026-10-19 02:55:31.000000	PJM	-112.03	2026-10-19 02:57:16.853825
2026-10-19 02:55:16.000000	PJM	-95.07	2026-10-19 02:57:16.853825
2026-10-19 02:55:01.000000	PJM	-29.32	2026-10-19 02:57:16.853825
2026-10-19 02:54:46.000000	PJM	4.18	2026-10-19 02:57:16.853825
2026-10-19 02:54:31.000000	PJM	7.32	2026-10-19 02:57:16.853825
2026-10-19 02:54:16.000000	PJM	134.13	2026-10-19 02:57:16.853825
2026-10-19 02:54:01.000000	PJM	212.78	2026-10-19 02:57:16.853825
2026-10-19 02:53:46.000000	PJM	166.09	2026-10-19 02:57:16.853825
2026-10-19 02:53:31.000000	PJM	233.32	2026-10-19 02:57:16.853825
2026-10-19 02:53:16.000000	PJM	213.24	2026-10-19 02:57:16.853825
2026-10-19 02:53:01.000000	PJM	276.46	2026-10-19 02:57:16.853825
2026-10-19 02:52:46.000000	PJM	287.82	2026-10-19 02:57:16.853825
2026-10-19 02:52:31.000000	PJM	297.57	2026-10-19 02:57:16.853825
2026-10-19 02:52:16.000000	PJM	180.17	2026-10-19 02:57:16.853825
2026-10-19 02:52:01.000000	PJM	132.89	2026-10-19 02:57:16.853825
2026-10-19 02:51:46.000000	PJM	69.01	2026-10-19 02:57:16.853825
2026-10-19 02:51:46.000000	PJM	69.01	2026-10-19 02:52:22.620413
2026-10-19 02:51:31.000000	PJM	20.27	2026-10-19 02:57:16.853825
2026-10-19 02:51:31.000000	PJM	20.27	2026-10-19 02:52:22.620413
2026-10-19 02:51:16.000000	PJM	-83.86	2026-10-19 02:57:16.853825

Coverage

94.1% complete9 gap days143 days with data

Show coverage history

Coverage: 94.1%Days with data: 143Gaps: 9

2026

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Related interchange data

Related interchange data
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