Octopus Energy · London · VAT included
Which Octopus Energy tariff would be cheapest for you?
This models what the last twelve months of real prices would have cost a household of a stated shape. It is a comparison of the past, not a prediction of your next bill.
Your postcode is sent once to Octopus Energy’s public region lookup — the same one they bill from. We do not put it in the URL, analytics or database, and do not keep it.
Octopus Energy import tariffs, cheapest first
On the ordinary household, single-rate meter profile at 2,500 kWh a year, using prices from 2025-09-08 to 2026-09-08.
The Ofgem price cap for this region works out at £822 a year on the same consumption — 26.35p per kWh plus 44.78p a day. Cap period 2026-07-01 to 2026-09-30.
- Agile Octopus
£672a year
21.12p per kWh on this profile, plus 39.54p a day. That is £150 below the price cap over the same year.
Across 12 complete months it ranged from 17.26p in April 2026 to 27.16p in August 2026.
- Intelligent Octopus Flux
£760a year
24.20p per kWh on this profile, plus 42.42p a day. That is £62 below the price cap over the same year.
Across 12 complete months it ranged from 22.47p in April 2026 to 26.26p in March 2026.
- Snug Octopus
£797a year
25.67p per kWh on this profile, plus 42.42p a day. That is £26 below the price cap over the same year.
Across 12 complete months it ranged from 24.56p in April 2026 to 27.17p in March 2026.
- Flexible Octopus
£799a year
25.89p per kWh on this profile, plus 41.50p a day. That is £23 below the price cap over the same year.
Across 12 complete months it ranged from 24.90p in April 2026 to 27.00p in January 2026.
- Cosy Octopus
£816a year
26.43p per kWh on this profile, plus 42.42p a day. That is £6 below the price cap over the same year.
Across 12 complete months it ranged from 24.05p in September 2025 to 27.58p in October 2025.
- Octopus Go
£833a year
26.87p per kWh on this profile, plus 44.12p a day. That is £11 above the price cap over the same year.
Across 12 complete months it ranged from 25.55p in September 2025 to 28.16p in May 2026.
- Octopus Flux
£846a year
27.65p per kWh on this profile, plus 42.42p a day. That is £24 above the price cap over the same year.
Across 12 complete months it ranged from 26.71p in April 2026 to 29.17p in March 2026.
Too little history to rank alongside
These have fewer than nine months of complete prices in the window — usually because they are new. Their figures are real but cover a different, shorter period, so they are not comparable with the list above.
- Octopus Tracker
£765a year
24.40p per kWh on this profile, plus 42.42p a day. That is £57 below the price cap over the same year.
Across 5 complete months it ranged from 21.57p in April 2026 to 27.71p in August 2026.
Measured over 170 complete days rather than the full year, so this figure is not comparable with the ones above it.
- Octopus 12M Fixed
£848a year
27.85p per kWh on this profile, plus 41.50p a day. That is £26 above the price cap over the same year.
Measured over 3 complete days rather than the full year, so this figure is not comparable with the ones above it.
Octopus Energy export tariffs, best paid first
On the solar export profile at 1,800 kWh a year, using prices from 2025-09-08 to 2026-09-08.
- Octopus Flux
£222earned a year
12.34p per kWh exported, plus 0.00p a day.
- Agile Outgoing Octopus
—earned a year
10.31p per kWh exported. Export tariffs carry no standing charge.
Across 12 complete months it ranged from 8.13p in September 2025 to 12.72p in August 2026.
Too little history to rank alongside
These have fewer than nine months of complete prices in the window — usually because they are new. Their figures are real but cover a different, shorter period, so they are not comparable with the list above.
- Prime Outgoing Octopus
£179earned a year
9.95p per kWh exported, plus 0.00p a day.
Measured over 78 complete days rather than the full year, so this figure is not comparable with the ones above it.
What the export estimate assumes
- 900 kWh generated a year for each kWp installed, which is the lower end of the usual UK range and does not account for your roof’s direction, pitch or shading.
- 50% of that exported rather than used in the house, which is the usual split for a home without a battery.
- Generation is not varied by region. A southern array does out-generate a northern one, but this site holds no yield data to put a figure on it, so it is left out rather than guessed at. The export rates themselves are real and do vary by region.
The rates are real and regional; the volume is an estimate. If you have an export meter reading, use it — a year of your own figures beats any model of your roof.
How these figures were worked out
Each tariff’s real half-hourly prices for London were weighted by when the ordinary household, single-rate meter profile uses electricity, averaged over every complete day in the window, then multiplied by 2,500 kWh a year with the standing charge added on top.
The profile is an assumption, not a measurement of you. If you have your own half-hourly data, the smart-meter replay costs your actual readings against these tariffs in your browser, which is exact where this is modelled.
- Overnight 00:00–06:00 sits at the base level, which is standing load rather than activity.
- A morning rise from 06:00 to 09:00, a shallower daytime from 09:00 to 16:00.
- The evening peak runs 16:00–22:00 and is highest between 18:00 and 20:00, at about three times the overnight base.
- This is our shape, not Elexon’s published coefficients — see the module header for why.
Economy 7 and other dual-register tariffs are not ranked here. Costing one means knowing which half hours are charged at the night rate, and that switching time is set per meter and per region and is not published in the data these pages read. Rather than assume a window and present the result as a measurement, they are left out. Their day and night rates are shown in full on each tariff’s own page, and the smart-meter replay can cost your own readings, because your meter knows the switching time even though this data does not.
Full method in our tariff pages, and every figure is inc-VAT on a direct debit basis.