Last 28 Days

British electricity generation over the last 28 days. Data sources: MyGridGB, Elexon Portal, Sheffield University.

Generation mix share

Each tile shows the average contribution of a fuel type to British electricity over the last 28 days, sized by its share of the mix. In windy periods, renewables dominate; gas and nuclear fill the gaps when weather-dependent generation is low.

Hourly electricity generation

Hourly generation across the last 28 days, showing how the electricity mix shifts through the day and across weather patterns. Solar peaks sharply around midday in bright weather. Wind can supply the majority of demand for sustained periods, then drop to near zero as weather fronts pass — these fluctuations drive the need for flexible backup from gas and storage.

Carbon intensity

Hourly carbon intensity of British electricity over the last 28 days (gCO₂eq/kWh). The red line marks the 2030 clean power target of 100 gCO₂eq/kWh. Intensity falls when renewables are generating strongly and rises when gas fills a larger share of demand.