Carbon intensity of GB electricity, now
—gCO₂/kWh
Current system conditions
Where the electricity came from
Share of national generation. NESO's estimate, so distribution-connected solar is included.
Carbon intensity
Settled actual against NESO's forecast, gCO₂/kWh.
National demand
Initial national demand outturn (INDO), megawatts.
Wholesale price
Market index price, £/MWh. Shaded band spans the half-hourly low to high within each point.
System frequency
Last 60 minutes at 15-second resolution. Always live — the range above does not apply.
Interconnector flows
Live, by link. Dashes travel the way the power is actually going, faster the harder a cable is working. Positive is electricity flowing into Great Britain; negative is export.
Carbon intensity by region
Forecast intensity for each of the 14 GB distribution regions, cleanest first.
Reading this dashboard
Two different pictures of generation
The mix percentages come from NESO, whose model includes distribution-connected generation — most importantly rooftop and field-scale solar, which is never metered at transmission level. The megawatt figures come from Elexon's metered BMRS feed, which counts only transmission-connected plant and therefore reports no solar at all. Neither is wrong; they answer different questions, so this site keeps them apart rather than blending them.
Coal
Coal appears in the data as a category but has been at zero throughout the period shown: Great Britain's last coal-fired power station closed in September 2024. It is folded into Other in the charts and kept as its own column in the table views.
Frequency
The grid is held at 50 Hz. NESO's operational target is 49.8–50.2 Hz, and the statutory limits are 49.5–50.5 Hz. Frequency drifting low means demand is outrunning generation; high means the opposite.
Revisions
Recent figures are provisional. Carbon intensity actuals, metered output and imbalance prices all settle after the fact, so the most recent few hours can change. Gaps in a line mean the data has not been published yet, not that the value was zero.