Live / Great Britain
Electricity demand
Demand on the transmission system · half-hour averages
Page checked
Refresh readingsOlder reading. This reading may no longer reflect current demand. Awaiting the latest interval’s publication.
Latest demand
25.74 GW
22 Sept 21:00–21:30 UTC
25,739 MW · Measured
Highest observed
32.27 GW
21 Sept 18:30–19:00 UTC
In the displayed range
Lowest observed
19.46 GW
21 Sept 02:00–02:30 UTC
In the displayed range
Change over 30 minutes
-1,583 MW
Compared with the preceding half hour
At the latest observed interval
Demand over time
20 Sept 22:30–22 Sept 22:30 UTC
94 observed of 96 intervals · 0 missing · 2 awaiting publication
Reading details
- Latest observed period
- 22 Sept 21:00–21:30 UTC
- Measurement basis
- Measured
Readings may be revised.
Publication and collection times
- Published
- 22 Sept 2026 21:30 UTC
- Retrieved
- 22 Sept 2026 22:18 UTC
Transmission-system demand is not total GB electricity consumption.
What this measuresRecent intervals
All 96 intervalsScroll sideways to see all columns.
| Interval start (UTC) | Demand (MW) | Status | Basis |
|---|---|---|---|
| 29,969 | Observed · older reading | Measured | |
| 28,162 | Observed · older reading | Measured | |
| 27,322 | Observed · older reading | Measured | |
| 25,739 | Observed · older reading | Measured | |
| — | Awaiting publication | — | |
| — | Awaiting publication | — |