Ask the Grid
PJM logo

Hourly Wind Power Forecast

PJM's RTO-wide hourly wind forecast, typically reaching about 46 hours ahead.

Generation dataPJM market
Query with the agent
Native record
RTO target hour x issue vintage
10-minute refresh; hourly targets publication cadence
Evidence
Forecast data
Forward-looking values with an explicit issue time
Time basis
Interval-start records
UTC · event_time

Overview

event_time is the target hour and evaluated_at_utc is the publication vintage; historical forecast evaluation must select a vintage issued no later than delivery. Score recent output against the Wind row in pjm.gen_by_fuel rather than the lagged settlement-derived wind table. Source: PJM Market Data.

Query contract

For historical scoring, select argMax(wind_forecast_mwh, evaluated_at_utc) with evaluated_at_utc <= event_time. For future targets, cap evaluated_at_utc at the analysis cutoff.

Analysis rules

  • Do not sum issue vintages.
  • Score recent forecasts against the Wind row of pjm.gen_by_fuel; the settlement-derived wind table lags and can contain provisional zeros at the current edge.

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_hourly_wind_power_forecast/query

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

Schema5

Column
Type
event_timeDateTime64(6, 'UTC')
evaluated_at_utcDateTime64(6, 'UTC')
datetime_ending_utcNullable(String)
wind_forecast_mwhNullable(Float64)
ingested_atDateTime64(6, 'UTC')

Sample data

event_timeevaluated_at_utcdatetime_ending_utcwind_forecast_mwhingested_at
2026-10-21 01:00:00.0000002026-10-19 02:40:00.0000002026-10-21T02:00:002301.6222026-10-19 02:44:10.774394
2026-10-21 01:00:00.0000002026-10-19 02:30:00.0000002026-10-21T02:00:002301.6222026-10-19 02:44:10.774394
2026-10-21 01:00:00.0000002026-10-19 02:20:00.0000002026-10-21T02:00:002301.6222026-10-19 02:44:10.774394
2026-10-21 01:00:00.0000002026-10-19 02:10:00.0000002026-10-21T02:00:002301.6222026-10-19 02:44:10.774394
2026-10-21 01:00:00.0000002026-10-19 02:00:00.0000002026-10-21T02:00:002301.6222026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 02:40:00.0000002026-10-21T01:00:002022.6082026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 02:30:00.0000002026-10-21T01:00:002022.6082026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 02:20:00.0000002026-10-21T01:00:002022.6082026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 02:10:00.0000002026-10-21T01:00:002022.6082026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 02:00:00.0000002026-10-21T01:00:002022.6082026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 01:50:00.0000002026-10-21T01:00:002022.542026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 01:40:00.0000002026-10-21T01:00:002022.542026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 01:30:00.0000002026-10-21T01:00:002022.542026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 01:20:00.0000002026-10-21T01:00:002022.542026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 01:10:00.0000002026-10-21T01:00:002022.542026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 01:00:00.0000002026-10-21T01:00:002022.542026-10-19 02:44:10.774394
2026-10-21 00:00:00.0000002026-10-19 01:40:00.0000002026-10-21T01:00:002022.542026-10-19 01:44:10.121186
2026-10-21 00:00:00.0000002026-10-19 01:30:00.0000002026-10-21T01:00:002022.542026-10-19 01:44:10.121186
2026-10-21 00:00:00.0000002026-10-19 01:20:00.0000002026-10-21T01:00:002022.542026-10-19 01:44:10.121186
2026-10-21 00:00:00.0000002026-10-19 01:10:00.0000002026-10-21T01:00:002022.542026-10-19 01:44:10.121186
2026-10-21 00:00:00.0000002026-10-19 01:00:00.0000002026-10-21T01:00:002022.542026-10-19 01:44:10.121186
2026-10-20 23:00:00.0000002026-10-19 02:40:00.0000002026-10-21T00:00:001671.6922026-10-19 02:44:10.774394
2026-10-20 23:00:00.0000002026-10-19 02:30:00.0000002026-10-21T00:00:001671.6922026-10-19 02:44:10.774394
2026-10-20 23:00:00.0000002026-10-19 02:20:00.0000002026-10-21T00:00:001671.6922026-10-19 02:44:10.774394
2026-10-20 23:00:00.0000002026-10-19 02:10:00.0000002026-10-21T00:00:001671.6922026-10-19 02:44:10.774394

Coverage

100.0% complete0 gap days72 days with data
Show coverage history
Coverage: 100.0%Days with data: 72Gaps: 0
2026
gaplessmore