Last 12 Months
Monthly electricity generation (TWh) by fuel type and carbon intensity. The treemap shows total generation by source for the chosen window; the column charts let you zoom out up to three years to reveal longer seasonal patterns.
Generation mix share
Total generation (TWh) by fuel type over the selected period. Tile size reflects share of the mix — the balance between gas, nuclear, wind and solar shifts significantly with season and weather.
Monthly generation & carbon intensity
Electricity generation (TWh) by fuel type per month. Winter months typically see higher total generation and more wind; summer brings solar peaks. Gas acts as the primary balancing fuel, rising when renewables are low.
Monthly carbon intensity
Average carbon intensity of British electricity (gCO₂eq/kWh) for each month. Carbon intensity falls when wind and solar output is high and rises when gas fills a larger share of demand.