Great Britain · NESO
Live Grid
Regional values describe the GB grid region, not the electricity entering an individual home. Northern Ireland is not on this live view.
Current carbon intensity
Stale · last check 6h ago167 gCO₂/kWh
moderateAs of 6 Oct 2026, 10:21 (UK time) · half-hour starting 7 Oct 2026, 09:30
Figures update when we run the NESO ingest (aim: every 30–60 minutes). Until a cloud schedule is live, re-run python etl/ingest_neso.py on your machine.
Source: NESO Carbon Intensity API (CC BY 4.0)
Green hours — next 24h
National forecast intensity by half-hour. Greener slices are better times to use flexible electricity.
Best 2-hour window
Wed 14:00 – Wed 16:00
Average ~95 gCO₂/kWh · 0 of 49 half-hours forecast low / very low
- Very low
- Low
- Moderate
- High
- Very high
Plan heavy loads (EV charge, dishwasher, heat pump boost) for greener slices. National GB forecast from NESO — not your exact home meter.
Source: NESO Carbon Intensity API forecast (CC BY 4.0) · fetched live, not a WWF embed
Last 48 hours
National carbon intensity (gCO₂/kWh), half-hourly.
Last 131 half-hours · range 55–236 gCO₂/kWh
Fuel mix
- gas41.1%
- imports17.5%
- nuclear11.7%
- solar10.8%
- biomass9.4%
- wind6.7%
- hydro1.6%
- other1.2%
- coal0.0%