Electricity prices Great Britain, 18 September 2026
18 September 2026 · Consumer price including taxes and charges.
Great Britain has no single public hourly price for households. We show Octopus Agile half-hourly prices (one supplier's dynamic tariff, inc. VAT), averaged over its 14 regions. The Ofgem price cap below applies to standard tariffs.
Average
20.0p/kWh
−8% vs. yesterday · −39% vs. 7-day average
Lowest
0.4p/kWh
Highest
42.6p/kWh
Hours with negative prices
0
Cheapest hours
- 12:00 · 1.6p/kWh
- 13:00 · 0.4p/kWh
- 14:00 · 0.4p/kWh
Best time to run
Washing machine (2 h)
13:00–15:00, average 0.4p/kWh
Dishwasher (3 h)
12:00–15:00, average 0.8p/kWh
Electric car (4 h)
12:00–16:00, average 1.2p/kWh
Hourly prices
The average household tariff in the United Kingdom is 33.7p/kWh (all taxes and fixed charges included, Oct–Dec 2026).
Last 7 days, hour by hour
12 Sept13 Sept14 Sept15 Sept16 Sept17 Sept18 Sept00:0003:0006:0009:0012:0015:0018:0021:00
Previous days
| Date | Average | Lowest | Highest |
|---|---|---|---|
| 17 Sept | 21.8p/kWh | -1.9p/kWh | 48.2p/kWh |
| 16 Sept | 35.6p/kWh | 28.3p/kWh | 56.6p/kWh |
| 15 Sept | 34.7p/kWh | 23.9p/kWh | 56.7p/kWh |
| 14 Sept | 40.0p/kWh | 31.5p/kWh | 59.9p/kWh |
| 13 Sept | 38.1p/kWh | 31.4p/kWh | 57.3p/kWh |
| 12 Sept | 23.7p/kWh | -2.6p/kWh | 49.6p/kWh |
| 11 Sept | 36.9p/kWh | 28.6p/kWh | 64.9p/kWh |
| 10 Sept | 34.4p/kWh | 23.0p/kWh | 50.4p/kWh |
| 9 Sept | 34.5p/kWh | 23.2p/kWh | 57.7p/kWh |
| 8 Sept | 25.4p/kWh | 7.9p/kWh | 48.1p/kWh |
| 7 Sept | 30.9p/kWh | 16.1p/kWh | 51.4p/kWh |
| 6 Sept | 19.2p/kWh | -4.4p/kWh | 49.0p/kWh |
| 5 Sept | 13.7p/kWh | -2.8p/kWh | 45.8p/kWh |
| 4 Sept | 17.3p/kWh | -2.4p/kWh | 36.8p/kWh |
Source: Octopus Energy API