Demand
— GWInitial national outturn · INDO
Period unavailable · Time unverifiedLoading the electricity atlas… National readings are below the map.
Initial national outturn · INDO
Period unavailable · Time unverifiedWind, hydro and biomass
Metered generation · Period unavailableActual unavailable · Source interval unavailable
Interval not yet completeUnavailable · imports − exports
Period unavailable · Time unverified— GWNear-live · FUELINST
Observation unavailable · Period unavailable
Generation readings unavailable. No values inferred.
Transmission-metered domestic generation excludes embedded estimates, pumped storage and imports. Other may include batteries. Renewable share includes wind, natural hydro and biomass, not nuclear; biomass is not zero-emission.
Demand and carbon use separate intervals. Five-minute snapshots are not half-hour averages. Methods and source definitions
Forecast unavailable
Freeze the selected values, period and basis. Downloads do not update when the page refreshes. Underlying provider rights still apply.
WHAT CHANGED / EVIDENCE FIRST
Comparable completed half-hours are unavailable. Missing readings are not converted into trends.
No time-valid day-ahead boundary periods are available in the cached source. This is a separate forecast window, not measured congestion or an explanation of the earlier generation changes.
Unused capacity, a forecast exceedance, or a schedule/output difference is not a curtailment estimate.
Market and storage
Wholesale index— /MWhNot your retail tariffTime unverifiedPumped storage— GWReading unavailableTime unverifiedCarbon outlook
Loading the carbon forecast…
Forecast, not a guarantee. Lower carbon does not necessarily mean a lower bill.
Carbon Intensity API · retrieved time unavailable. Upstream issue time not supplied.
Only contiguous future periods covering the selected duration qualify. Rank by duration-weighted average; ties choose the earliest start. No historical lows or actual values substitute for missing forecasts.
Historical measured generation has different embedded-source coverage from the live mix. Gaps and incomplete periods are not observations.
Generation, changing renewables and gas, with the limits of the evidence in view.
THE EXPLAINER / CLEANER ELECTRICITYWhy the answer changes with the weather—and why clean and cheap are not the same thing.
Scope: Great Britain, excluding Northern Ireland. Demand is initial national demand outturn (INDO), with the source’s transmission-system boundary. Biomass is included in renewable share; storage is excluded. Individual inputs can cover different intervals.
Definitions and limitations · Source directory · How to cite
Carbon and enrichment readings unavailable. Generation and demand have separate source status above.