National Grid Carbon Intensity Archive

Notes

The carbon intensity data for this graph is National Grid half-hourly data for GB electricity, including embedded solar and wind generation, and interconnector imported electricity.

National Grid carbon intensity factors for each fuel source are slightly different from those used by electricity info elsewhere on the site.

The red and green zones in the Carbon Intensity chart represent the upper and lower quartiles for the half-hourly intensity data over the selected period.

A warning on white goods

If you intend using carbon intensity data to decide when to run white goods like washing machines and tumble dryers, please take note of Fire Service advice not to run such equipment at night or while unattended.