Octopus tariffs, 2026.

Octopus Go

Four hours of super-cheap electricity overnight (00:30–05:30): ~7.5p/kWh. Rest of the day at standard rate (~27p/kWh). Aimed at EV drivers who charge overnight.

Best for: EV owners charging 15–30 kWh/night.

Solar owners: Combine with battery to store cheap overnight juice for daytime use. Classic combo for maximising savings.

Intelligent Octopus Go

Six hours of cheap electricity (23:30–05:30) — the cheap window expands beyond the "strict" Go window if your compatible EV/charger is plugged in. ~7p/kWh cheap rate.

Best for: Tesla, Ford, Hyundai, Kia, Polestar and others with supported integrations. If you have a supported EV, this is almost always better than Go.

Octopus Cosy

Three cheap windows per day (04:00–07:00, 13:00–16:00, 22:00–24:00) at ~13p/kWh. Peak window (16:00–19:00) is expensive (~37p/kWh).

Best for: Heat pump owners. Designed specifically so heat pumps can run during cheap windows to pre-heat the house, coast through peak.

Octopus Agile

Prices change every 30 minutes based on wholesale electricity cost. Can be negative on windy nights (you get paid to use it) or very high on cold, windless evenings (50–100p/kWh).

Best for: Flexible households who can shift laundry, EV charging and heating to cheap windows. Tech-savvy owners who tweak the API.

Avoid if: You can't shift load. Peak pricing will cost you money.

Octopus Flux

Solar + battery specific. Buys your exports at a premium rate (~26p/kWh) during the 16:00–19:00 peak, and sells you cheap overnight (~19p/kWh).

Best for: Solar + battery households. Peak export rate beats standard SEG by 2–4x. Requires a battery to shift export timing.

Octopus Heat Pump Tracker

Discounted rate on electricity used by your heat pump (measured separately) — typically ~14p/kWh flat for the heat pump, with the rest of the house on a normal tariff.

Best for: Heat pump owners who can't easily shift whole-house load (i.e. most families). Simpler than Cosy with similar savings.

Kit to unlock these tariffs

Most smart tariffs require specific kit to work. Essentials:

• Hugo Smart Energy Monitor — see real-time tariff cost (see our energy monitor roundup)
• Tado V3+ Thermostat — required for Cosy tariff optimisation
• Type 2 Charging Cable (32A, 5m) — needed to hit 7kW on Go / Intelligent Go

Quick match