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Electricity prices Great Britain, 12 September 2026

12 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
23.7p/kWh
−36% vs. yesterday · −15% vs. 7-day average
Lowest
-2.6p/kWh
Highest
49.6p/kWh
Hours with negative prices
4

Cheapest hours

Best time to run

Washing machine (2 h)
11:00–13:00, average -2.6p/kWh
Dishwasher (3 h)
11:00–14:00, average -2.5p/kWh
Electric car (4 h)
10:00–14:00, average -2.1p/kWh

Hourly prices

036912151821
Cheapest hours highlighted. Times in local time.
Show the data as a table
HourPrice
034.0p/kWh
132.3p/kWh
231.3p/kWh
329.4p/kWh
430.2p/kWh
528.6p/kWh
627.2p/kWh
725.7p/kWh
820.1p/kWh
98.6p/kWh
10-1.1p/kWh
11-2.6p/kWh
12-2.6p/kWh
13-2.1p/kWh
140.2p/kWh
153.2p/kWh
1631.8p/kWh
1747.3p/kWh
1849.6p/kWh
1937.1p/kWh
2037.2p/kWh
2137.1p/kWh
2234.5p/kWh
2332.4p/kWh

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

Cheapest hours highlighted. Times in local time.

Previous days

DateAverageLowestHighest
11 Sept36.9p/kWh28.6p/kWh64.9p/kWh
10 Sept34.4p/kWh23.0p/kWh50.4p/kWh
9 Sept34.5p/kWh23.2p/kWh57.7p/kWh
8 Sept25.4p/kWh7.9p/kWh48.1p/kWh
7 Sept30.9p/kWh16.1p/kWh51.4p/kWh
6 Sept19.2p/kWh-4.4p/kWh49.0p/kWh
5 Sept13.7p/kWh-2.8p/kWh45.8p/kWh
4 Sept17.3p/kWh-2.4p/kWh36.8p/kWh
3 Sept26.6p/kWh8.5p/kWh49.4p/kWh
2 Sept32.2p/kWh26.2p/kWh51.5p/kWh
1 Sept27.7p/kWh10.8p/kWh50.1p/kWh
31 Aug22.0p/kWh-1.2p/kWh45.3p/kWh
30 Aug29.1p/kWh23.3p/kWh45.4p/kWh
29 Aug28.7p/kWh15.9p/kWh47.9p/kWh

Source: Octopus Energy API