ERCOT Fuel Mix (15-Minute Settlement)

ERCOT's Fuel Mix Report (IntGenByFuel) gives actual electricity generation across the Texas grid broken out by fuel type, for every 15-minute settlement interval.

ercot.fuel_mix_reportGeneration data

Open in Data

One row per: event_time x fuel_type x settlement_type; 15-minute (settlement) cadence
Evidence: Observed market data; Published observations from the named source
Time basis: Point-in-time records; UTC · event_time

Overview

Each interval lists output for categories such as gas, coal, nuclear, wind, solar, hydro, and storage, with values first published as initial readings and later restated as settlement-quality finals. It shows what physically ran on the system and in what proportion, letting operators, traders, and researchers track the real-time generation mix, gauge renewable penetration against load, and study how the fuel stack shifts hour to hour and season to season. The SQL agent queries this through the unified `ercot_fuel_mix` view (quality='settled') rather than this table directly.

Query contract: Preserve one canonical row per (event_time, fuel_type, settlement_type) before aggregating.
Analysis rules: Group only after preserving the declared grain: event_time, fuel_type, settlement_type.

Access

Plans: See available download and API access options. View pricing
Full history: Delivered to Snowflake, Databricks or your own storage on a schedule by Data services.
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Schema

5 columns

Column	Type
`event_time`	`DateTime64(6, 'UTC')`
`fuel_type`	`LowCardinality(String)`
`settlement_type`	`LowCardinality(String)`
`gen_mw`	`Nullable(Float64)`
`ingested_at`	`DateTime64(6, 'UTC')`

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Sample data

event_timeDateTime64(6, 'UTC')

fuel_typeLowCardinality(String)

settlement_typeLowCardinality(String)

gen_mwNullable(Float64)

ingested_atDateTime64(6, 'UTC')

2026-10-01 05:00:00.000000

wsl

INITIAL

-798.55572

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

wind

INITIAL

16211.66786

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

solar

INITIAL

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

other

INITIAL

476.45794

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

nuclear

INITIAL

4971.250304

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

hydro

INITIAL

10.07588

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

gas_cc

INITIAL

23734.634352

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

gas

INITIAL

9781.678336

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

coal

INITIAL

7938.239456

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

biomass

INITIAL

62.814512

2026-11-02 09:00:20.740706

2026-10-01 05:00:00.000000

wsl

INITIAL

-798.55572

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

wind

INITIAL

16211.66786

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

solar

INITIAL

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

other

INITIAL

476.45794

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

nuclear

INITIAL

4971.250304

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

hydro

INITIAL

10.07588

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

gas_cc

INITIAL

23734.634352

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

gas

INITIAL

9781.678336

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

coal

INITIAL

7938.239456

2026-10-26 09:00:15.984477

2026-10-01 05:00:00.000000

biomass

INITIAL

62.814512

2026-10-26 09:00:15.984477

2026-10-01 04:45:00.000000

wsl

INITIAL

-604.089912

2026-11-02 09:00:20.740706

2026-10-01 04:45:00.000000

wind

INITIAL

15721.166804

2026-11-02 09:00:20.740706

2026-10-01 04:45:00.000000

solar

INITIAL

0.274752

2026-11-02 09:00:20.740706

2026-10-01 04:45:00.000000

other

INITIAL

931.271272

2026-11-02 09:00:20.740706

2026-10-01 04:45:00.000000

nuclear

INITIAL

4970.194968

2026-11-02 09:00:20.740706

25 rows

25 sample rows of 8.1MBrowse every row in Data

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Coverage

Complete: 100.0%
Gap days: 0
Days with data: 7,214

Show coverage history

Coverage: 100.0%Days with data: 7,214Gaps: 0

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