Ask the Grid
Open live grid
ISO-NE logo

Fuel Mix

ISO-NE's published Fuel Mix source feed.

Generation dataISO-NE market
Query with the agent
Native record
fuel category x five-minute operating interval
ISO-NE source publication publication cadence
Evidence
Observed market data
Published observations from the named source
Time basis
Point-in-time records
UTC · event_time

Overview

This catalog page exposes the physical schema, coverage, and latest source rows without inventing a normalized grain for publisher-shaped snapshot fields. Use the documented key and event time when comparing revisions or vintages.

Query contract

Select the latest ingested_at revision per event_time and fuel_category before pivoting or totaling generation.

Analysis rules

  • Sum gen_mw across distinct fuel categories only after canonicalizing the interval.
  • fuel_category_rollup and fuel_category describe the same row at different publisher classification levels; do not sum both classifications.

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.

ISO-NE MCP API reference
HTTP endpoint
POST /api/v1/datasets/isone_fuel_mix/query

Schema6

Column
Type
event_timeDateTime64(6, 'UTC')
gen_mwNullable(Float64)
fuel_category_rollupNullable(String)
fuel_categoryLowCardinality(String)
marginal_flagNullable(String)
ingested_atDateTime64(6, 'UTC')

Sample data

event_timegen_mwfuel_category_rollupfuel_categorymarginal_flagingested_at
2026-09-28 05:52:57.000000198RenewablesWoodN2026-09-28 05:55:04.770752
2026-09-28 05:52:57.0000001549RenewablesWindN2026-09-28 05:55:04.770752
2026-09-28 05:52:57.00000012RenewablesSolarN2026-09-28 05:55:04.770752
2026-09-28 05:52:57.000000342RenewablesRefuseN2026-09-28 05:55:04.770752
2026-09-28 05:52:57.0000003340NuclearNuclearN2026-09-28 05:55:04.770752
2026-09-28 05:52:57.0000004135Natural GasNatural GasY2026-09-28 05:55:04.770752
2026-09-28 05:52:57.00000025RenewablesLandfill GasN2026-09-28 05:55:04.770752
2026-09-28 05:52:57.000000204HydroHydroN2026-09-28 05:55:04.770752
2026-09-28 05:52:57.000000198RenewablesWoodN2026-09-28 05:55:24.178091
2026-09-28 05:52:57.0000001549RenewablesWindN2026-09-28 05:55:24.178091
2026-09-28 05:52:57.00000012RenewablesSolarN2026-09-28 05:55:24.178091
2026-09-28 05:52:57.000000342RenewablesRefuseN2026-09-28 05:55:24.178091
2026-09-28 05:52:57.0000003340NuclearNuclearN2026-09-28 05:55:24.178091
2026-09-28 05:52:57.0000004135Natural GasNatural GasY2026-09-28 05:55:24.178091
2026-09-28 05:52:57.00000025RenewablesLandfill GasN2026-09-28 05:55:24.178091
2026-09-28 05:52:57.000000204HydroHydroN2026-09-28 05:55:24.178091
2026-09-28 05:45:44.000000199RenewablesWoodN2026-09-28 05:50:05.153103
2026-09-28 05:45:44.0000001569RenewablesWindN2026-09-28 05:50:05.153103
2026-09-28 05:45:44.00000012RenewablesSolarN2026-09-28 05:50:05.153103
2026-09-28 05:45:44.000000338RenewablesRefuseN2026-09-28 05:50:05.153103
2026-09-28 05:45:44.0000003343NuclearNuclearN2026-09-28 05:50:05.153103
2026-09-28 05:45:44.0000004081Natural GasNatural GasY2026-09-28 05:50:05.153103
2026-09-28 05:45:44.00000025RenewablesLandfill GasN2026-09-28 05:50:05.153103
2026-09-28 05:45:44.000000205HydroHydroN2026-09-28 05:50:05.153103
2026-09-28 05:45:44.0000002BatteriesBatteriesN2026-09-28 05:50:05.153103

Coverage

99.8% complete3 gap days1,729 days with data
Show coverage history
Coverage: 99.8%Days with data: 1,729Gaps: 3
2026
2025
2024
2023
2022
gaplessmore