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 2025-11-05 to 2026-11-05.

The Ofgem price cap for this region works out at £822 a year on the same consumption — 26.60p per kWh plus 42.92p a day. Cap period 2026-10-01 to 2026-12-31.

Agile Octopus
£716a year
23.15p per kWh on this profile, plus 37.65p a day. That is £105 below the price cap over the same year.
Across 12 complete months it ranged from 17.26p in April 2026 to 30.02p in October 2026.
Intelligent Octopus Flux
£752a year
23.89p per kWh on this profile, plus 42.29p a day. That is £70 below the price cap over the same year.
Across 12 complete months it ranged from 22.46p in September 2026 to 26.26p in March 2026.
Snug Octopus
£789a year
25.37p per kWh on this profile, plus 42.29p a day. That is £33 below the price cap over the same year.
Across 12 complete months it ranged from 24.07p in October 2026 to 27.17p in March 2026.
Flexible Octopus
£802a year
26.06p per kWh on this profile, plus 41.39p a day. That is £19 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
£813a year
26.35p per kWh on this profile, plus 42.29p a day. That is £8 below the price cap over the same year.
Across 12 complete months it ranged from 25.44p in October 2026 to 27.58p in November 2025.
Octopus Go
£838a year
27.33p per kWh on this profile, plus 42.29p a day. That is £16 above the price cap over the same year.
Across 12 complete months it ranged from 25.64p in April 2026 to 28.41p in October 2026.
Octopus Flux
£841a year
27.48p per kWh on this profile, plus 42.29p a day. That is £20 above the price cap over the same year.
Across 12 complete months it ranged from 26.54p in October 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
£790a year
25.71p per kWh on this profile, plus 40.40p a day. That is £31 below the price cap over the same year.
Across 7 complete months it ranged from 21.57p in April 2026 to 28.54p in October 2026.
Measured over 228 complete days rather than the full year, so this figure is not comparable with the ones above it.
Octopus Fixed
£892a year
29.65p per kWh on this profile, plus 41.39p a day. That is £71 above the price cap over the same year.
Measured over 1 complete day 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 2025-11-05 to 2026-11-05.

Octopus Flux
£223earned a year
12.41p per kWh exported, plus 0.00p a day.
Across 12 complete months it ranged from 12.34p in November 2025 to 12.92p in October 2026.
Agile Outgoing Octopus
—earned a year
11.34p per kWh exported. Export tariffs carry no standing charge.
Across 12 complete months it ranged from 8.64p in April 2026 to 15.66p in October 2026.

Too little history to rank alongside

Prime Outgoing Octopus
£179earned a year
9.95p per kWh exported, plus 0.00p a day.
Measured over 136 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.