Datasets:

THULab
/

uk_electricity_generation_mix_2019_2026

license: odc-by
task_categories:
  - time-series-forecasting
  - tabular-regression
language:
  - en
tags:
  - energy
  - electricity
  - power-generation
  - carbon-intensity
  - renewables
  - wind-power
  - solar-power
  - nuclear-power
  - gas
  - coal
  - biomass
  - hydro
  - uk
  - great-britain
  - climate
  - net-zero
  - grid
  - timeseries
  - tabular
  - pandas
  - duckdb
  - tsfile
  - modality:timeseries
  - format:tsfile
pretty_name: UK Electricity Generation Mix 2019-2026 (TsFile)
size_categories:
  - 100K<n<1M
modality:
  - tabular
  - timeseries

UK Electricity Generation Mix & Carbon Intensity, 2019–2026 (TsFile)

Apache TsFile version of Rif-SQL/uk-electricity-generation-mix-2019-2026.

Overview

Half-hourly electricity generation by fuel type and carbon intensity for Great Britain, sourced from the NESO (National Energy System Operator) Historic GB Generation Mix. Each record is a 30-minute settlement period giving generation (MW) per fuel, aggregated totals, each fuel's share of the mix (percent), and the grid carbon intensity.

Time range: 2019-01-01 00:00 → 2026-03-19 21:30 (UTC).
Granularity: 30-minute intervals.
Records: 126,476.
Coverage: one continuous national (GB) series — no per-region/per-unit split.

Schema (TsFile structure)

Time (INT64, milliseconds) — the settlement-period timestamp (source DATETIME in UTC).
No TAG columns — this is a single national series.
FIELD columns (33) — all kept as-is:
- Generation by fuel (MW): GAS, COAL, NUCLEAR, WIND, WIND_EMB, HYDRO, SOLAR, BIOMASS, STORAGE, IMPORTS, OTHER.
- Aggregated totals (MW): GENERATION, FOSSIL, LOW_CARBON, ZERO_CARBON, RENEWABLE.
- Per-fuel / per-group share (percent): the corresponding *_perc columns.
- CARBON_INTENSITY — grid carbon intensity (gCO₂/kWh).

Column names are lower-cased in the TsFile table.

Usage

Read the .tsfile files with the Apache TsFile Java or Python SDK.

Source & license

Original dataset: https://huggingface.co/datasets/Rif-SQL/uk-electricity-generation-mix-2019-2026
Author / publisher: Rif-SQL
Underlying source: NESO Historic GB Generation Mix (https://www.neso.energy/data-portal/historic-generation-mix/historic_gb_generation_mix)
License: Open Data Commons Attribution License (ODC-By)

Conversion notes

Time comes from the source DATETIME column (UTC), parsed to epoch milliseconds; the DATETIME column is folded into Time and not retained as a duplicate field (fixed 30-minute cadence, unique timestamps → lossless).
No TAG columns and no rows dropped; all 33 numeric measurement columns are kept as FIELD.