Data Sources
🇬🇧 United Kingdom
National Grid Carbon Intensity API — real-time direct carbon intensity data, updated every 30 minutes.
🇪🇺 Europe (40+ countries)
Fraunhofer ISE Energy-Charts API — real-time electricity generation by source. Carbon intensity is calculated from the live generation mix using IPCC emission factors.
License: CC BY 4.0
🌍 Rest of World (150+ countries)
Baseline annual data from Our World in Data / Ember — electricity generation mix and estimated carbon intensity for 2024.
Emission Factors (gCO₂eq/kWh)
Coal: 820 | Lignite: 1050 | Gas: 490 | Oil: 720 | Nuclear: 12 | Hydro: 24 | Wind: 11 | Solar: 48 | Biomass: 230 | Other: 500