About the Carbon Intensity API

National Grid ESO's Carbon Intensity API provides an indicative trend of regional carbon intensity of the electricity system in Great Britain (GB) 96+ hours ahead of real-time. It provides programmatic and timely access to both forecast and estimated carbon intensity data.



The Carbon Intensity forecast includes CO 2 emissions related to electricity generation only. The includes emissions from all large metered power stations, interconnector imports, transmission and distribution losses, and accounts for national electricity demand, embedded wind and solar generation.



The goal of this API service is to allow developers to produce applications that will enable consumers and/or smart devices to optimise their behaviour to minimise CO 2 emissions.