Value-added daily signals panel from Great Britain's official half-hourly carbon intensity and generation-mix series (NESO Carbon Intensity API, keyless, CC BY 4.0): one row per day over the trailing year with mean/min/max carbon intensity in gCO2/kWh, the evening-peak gauge, greenest/dirtiest half-hours, NESO forecast accuracy, fuel-mix shares (gas, wind, nuclear, solar, biomass, hydro, coal, imports, other), renewable and low-carbon shares, MoM/YoY changes, 30-day volatility and 3-sigma anomaly flags. The clean-electricity layer for energy, ESG and demand-shifting models.

Source: UK Grid Carbon Intensity (derived)
Rows: 354
Columns: 27
Source cadence: Daily
Last refreshed: Oct 6, 2026
Theme: energy

Column	Type	Description
date	date	Calendar date (UTC) the half-hourly windows are aggregated to.
avg_intensity	float	Mean of the half-hourly actual carbon intensity values for the day, in gCO2/kWh, as published by the Carbon Intensity API. (unit: gCO2/kWh)
min_intensity	integer	Lowest half-hourly actual carbon intensity of the day, in gCO2/kWh. (unit: gCO2/kWh)
max_intensity	integer	Highest half-hourly actual carbon intensity of the day, in gCO2/kWh. (unit: gCO2/kWh)
std_intensity	float	—
dominant_index	string	The Carbon Intensity API's index label (very low / low / moderate / high / very high) most frequent across the day's half-hours.
evening_peak_intensity	float	Mean half-hourly actual carbon intensity over the 17:00-21:00 half-hours, in gCO2/kWh. (unit: gCO2/kWh)
greenest_halfhour	string	—
dirtiest_halfhour	string	—
forecast_mae_pct	float	Mean absolute error of the API's half-hourly forecast intensity versus the actual, as a percent of actual. (unit: percent)
share_biomass	float	Daily mean of the half-hourly biomass share of GB generation, percent. (unit: percent)
share_coal	float	Daily mean of the half-hourly coal share of GB generation, percent. (unit: percent)
share_gas	float	Daily mean of the half-hourly gas share of GB generation, percent. (unit: percent)
share_hydro	float	Daily mean of the half-hourly hydro share of GB generation, percent. (unit: percent)
share_imports	float	Daily mean of the half-hourly interconnector imports share of GB generation, percent. (unit: percent)
share_nuclear	float	Daily mean of the half-hourly nuclear share of GB generation, percent. (unit: percent)
share_other	float	Daily mean of the half-hourly 'other' share of GB generation, percent. (unit: percent)
share_solar	float	Daily mean of the half-hourly solar share of GB generation, percent. (unit: percent)
share_wind	float	Daily mean of the half-hourly wind share of GB generation, percent. (unit: percent)
renewable_share	float	—
low_carbon_share	float	—
mom_change	float	—
yoy_change	float	—
yoy_change_pct	float	—
volatility_30d	float	—
anomaly_flag	integer	—
row_hash	string	—

First 10 sample rows — a preview, not the complete dataset.

date	avg_intensity	min_intensity	max_intensity	std_intensity	dominant_index	evening_peak_intensity	greenest_halfhour	dirtiest_halfhour	forecast_mae_pct	share_biomass	share_gas	share_hydro	share_imports	share_nuclear	share_solar	share_wind	renewable_share	low_carbon_share	mom_change	yoy_change	yoy_change_pct	volatility_30d	row_hash
2025-10-06	121	63	195	38.367	moderate	177.125	00:00	16:30	10.253	5.613	27.838	0.015	8.854	8.623	6.938	42.096	49.048	57.671	44.958	—	—	44.927	e91e92f10ca0d150
2025-10-07	176.063	111	229	34.558	high	223.875	01:00	17:00	5.607	7.179	42.95	0	6.931	8.263	3.169	31.465	34.633	42.896	109.667	37.229	26.816	45.731	8882a9160366f345
2025-10-08	195.521	125	241	29.539	high	220.875	23:30	05:30	5.662	7.723	48.235	0.004	7.165	9.1	3.44	24.308	27.752	36.852	64.625	66.604	51.665	48.046	d9021a1a5ad1ea91
2025-10-09	155.063	119	218	29.894	moderate	194.875	01:30	17:00	6.53	8.165	35.04	0.004	11.221	9.856	4.179	31.506	35.69	45.546	16.5	49.104	46.343	48.411	b96f3a02d72fffd8
2025-10-10	189.042	138	218	22.87	high	211.125	01:30	18:30	2.397	7.379	43.494	0.006	14.331	10.221	2.613	21.912	24.531	34.752	126.479	64.542	51.841	49.088	91f06e6f7ccb0844
2025-10-11	211.583	181	248	21.708	high	245.25	03:00	19:30	2.807	6.058	47.152	0.004	18.31	11.858	4.285	12.304	16.594	28.452	155.667	59.792	39.391	50.257	14a6866a2848386b
2025-10-12	238.563	222	265	14.311	high	262.5	00:00	17:00	1.967	5.954	55.083	0.021	17.371	12.754	3.935	4.873	8.829	21.583	175.271	158.458	197.815	52.891	161fc776d7e08840
2025-10-13	263.833	232	277	11.673	very high	272.75	00:00	20:30	1.899	5.985	64.469	0	10.604	11.283	1.777	5.865	7.642	18.925	186.667	95.937	57.141	57.106	3177e09137b434c7
2025-10-14	256.229	236	279	9.969	very high	255	23:30	05:30	1.694	6.863	62.3	0	9.804	10.848	1.494	8.667	10.16	21.008	164.521	39.688	18.328	60.354	b330a289cdcd9f7e
2025-10-15	241.417	207	265	14.104	high	249	23:00	06:00	2.188	7.302	58.281	0	10.704	11.521	1.692	10.473	12.165	23.685	187.667	116.917	93.909	60.502	8e3fc8f191d48e9f

Oct 6, 2026Current
20261006T165549Z-a2f01831057f · sha256 a2f01831057f…
354 rows · +2 rows vs previous
Oct 6, 2026Quarantined
20261006T164639Z-71648ec22282 · sha256 71648ec22282…
352 rows · first snapshot
Not served: failed validation checks

Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).

cURL

curl "https://datazimuts.com/v1/datasets/uk_carbon_intensity_intel/uk_grid_carbon_daily" | jq '{title, rows, columns_count, license}'

Python

import requests

ds = requests.get("https://datazimuts.com/v1/datasets/uk_carbon_intensity_intel/uk_grid_carbon_daily").json()
print(ds["title"], ds["rows"], "rows")

# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
    print(row)

API endpoint: https://datazimuts.com/v1/datasets/uk_carbon_intensity_intel/uk_grid_carbon_daily

Tip: fetch /llms.txt for the full machine-readable catalog.

Where this data comes from and what was made from it. Other people's work shows as counts; only shared projects are named.

Cite this snapshot

Pinned to snapshot 20261006T165549Z-a2f01831057f and its content hash, so readers get exactly the data you used.

APA

UK Grid Carbon Intensity (derived). (2026). UK grid carbon intensity daily signals (GB, half-hourly actuals) [Data set, snapshot 20261006T165549Z-a2f01831057f, sha256 a2f01831057f]. Datazimuts. Retrieved 2026-10-07, from https://datazimuts.com/en/datasets/uk_carbon_intensity_intel/uk_grid_carbon_daily?snapshot=20261006T165549Z-a2f01831057f

BibTeX

@misc{dz_uk_carbon_intensity_intel_uk_grid_carbon_a2f01831,
  title        = {{UK grid carbon intensity daily signals (GB, half-hourly actuals)}},
  author       = {{UK Grid Carbon Intensity (derived)}},
  year         = {2026},
  publisher    = {Datazimuts},
  howpublished = {\url{https://datazimuts.com/en/datasets/uk_carbon_intensity_intel/uk_grid_carbon_daily?snapshot=20261006T165549Z-a2f01831057f}},
  note         = {Snapshot 20261006T165549Z-a2f01831057f, sha256 a2f01831057f3b706109c291e14fd81e61d1090f23a74274ccc306fceadf2533; accessed 2026-10-07}
}

Embed a table or a chart

Paste this into any page. The embed is pinned to the same snapshot, follows the reader's light or dark setting, and always shows the source, license and a link back.

Type

X axis

Value

Aggregate

Theme

HTML

<iframe src="https://datazimuts.com/embed/chart?dataset=uk_carbon_intensity_intel%2Fuk_grid_carbon_daily&lang=en&theme=auto&snapshot=20261006T165549Z-a2f01831057f&x=date&y=avg_intensity&agg=avg" title="UK grid carbon intensity daily signals (GB, half-hourly actuals)" width="100%" height="380" style="border:0" loading="lazy"></iframe>

Sign in to comment

Ask about this dataset. Answers come only from its catalog record, measured profile and change history, and list the facts they used.