Generation mix
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Percentages are sourced from the Carbon Intensity API, which combines metered grid generation with modelled estimates for smaller embedded generators. Raw metered data (which only captures large grid-connected plant) may show slightly different figures for the same period — both are valid representations of the current mix.
Interconnectors
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National carbon intensity
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gCO₂/kWh
Carbon intensity by region
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Data sources
Carbon intensity and generation mix data from the Carbon Intensity API (api.carbonintensity.org.uk) — developed by the National Energy System Operator (NESO) and University of Oxford — licensed under CC BY 4.0.
Interconnector flow data: Contains BMRS data © Elexon Limited copyright and database right 2026, sourced via the Elexon Insights Solution API.
This is an unofficial personal project not affiliated with NESO, Elexon, or any industry body.
Carbon intensity and generation mix data from the Carbon Intensity API (api.carbonintensity.org.uk) — developed by the National Energy System Operator (NESO) and University of Oxford — licensed under CC BY 4.0.
Interconnector flow data: Contains BMRS data © Elexon Limited copyright and database right 2026, sourced via the Elexon Insights Solution API.
This is an unofficial personal project not affiliated with NESO, Elexon, or any industry body.