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9.4p
Octopus Go
overnight rate
overnight rate
Octopus Go
daytime rate ()
daytime rate ()
Saved per kWh
on stored energy
on stored energy
Best-case annual saving
(5 kWh battery)
(5 kWh battery)
The calculation (Octopus Go rates for , checked 15 October 2026)
All UK regions
On Octopus Go 12M Fixed (GO-FIX-12M-26-10-14, checked 15 October 2026), the overnight rate is 9.4p everywhere. Daytime rates run from 35.293p (East Midlands) to 39.3081p (North Wales & Merseyside). Best-case yearly savings on a 5 kWh battery, with one full cycle a day and an assumed 90% round-trip efficiency, are up to about £450 to £530. Best-case payback on £2,499 is about 4.7 to 5.5 years. Real savings will be lower. See how we worked it out.
| Region | Go daytime rate | Spread | Best-case annual saving (5 kWh) |
|---|---|---|---|
| East Midlands | 35.293p | 25.9p | £453 |
| Northern England | 35.6811p | 26.3p | £461 |
| West Midlands | 35.7213p | 26.3p | £461 |
| Yorkshire | 35.922p | 26.5p | £465 |
| Southern England | 36.5644p | 27.2p | £477 |
| Southern Scotland | 36.8321p | 27.4p | £482 |
| Northern Scotland | 36.9793p | 27.6p | £484 |
| South Wales | 37.2738p | 27.9p | £490 |
| South West England | 37.2738p | 27.9p | £490 |
| London | 37.2872p | 27.9p | £490 |
| Eastern England | 37.3675p | 28.0p | £491 |
| North West England | 37.4478p | 28.0p | £493 |
| South East England | 37.6485p | 28.2p | £496 |
| North Wales & Merseyside | 39.3081p | 29.9p | £527 |
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