Best UK Heat Pump Electricity Tariffs (2026)
Running a heat pump on a standard flat-rate electricity tariff is an expensive mistake. By switching to a specialized smart time-of-use tariff, you can heat your home for as little as 12p per kWh.
Smart Tariffs Cut Heating Bills by Up to 60%
A heat pump with an SCOP of 3.8 running on a 12.5p/kWh off-peak smart tariff delivers heat at an effective cost of just 3.29p per thermal kWh—nearly half the cost of burning mains natural gas (6.2p/kWh).
Top 5 UK Heat Pump Tariffs Ranked (2026)
| Tariff Name | Off-Peak Unit Rate | Off-Peak Hours | Best For |
|---|---|---|---|
| Cosy Octopus (Octopus Energy) | ~12.5p / kWh | 3 daily slots (04:00-07:00, 13:00-16:00, 22:00-00:00) | #1 Top Pick Most UK homes with heat pumps |
| Agile Octopus (Octopus Energy) | Dynamic (0p - 15p avg) | Half-hourly wholesale rates (plunge pricing) | Tech Enthusiasts Homes with solar battery storage |
| British Gas PeakSave (British Gas) | Half Price Sundays & Events | 09:00 - 17:00 Sundays + scheduled events | Traditional Switch Loyal British Gas customers |
| OVO Heat Pump Add-On (OVO Energy) | 15.0p / kWh (Anytime) | 24/7 dedicated sub-metered heat pump rate | No Scheduling Continuous heating users |
| Standard Ofgem Price Cap (Baseline) | ~24.5p / kWh | Flat rate (24 hours a day) | Not Recommended Default unoptimized tariff |
Cut Your Existing Heating Electricity Bills in Under 2 Minutes
Switching your household energy supplier to a 100% green, time-of-use tariff doesn't require an installer visit. Select your preferred provider below to start saving immediately.
Detailed Analysis of Leading Tariffs
1. Cosy Octopus (The Undisputed Industry Leader)
Cosy Octopus is designed specifically for heat pump owners. Unlike standard Economy 7 which only gives off-peak power overnight, Cosy Octopus provides three separate off-peak boost windows totaling 8 hours every day:
- Morning Slot (04:00 – 07:00): Pre-heats your home and hot water cylinder before the morning alarm.
- Afternoon Slot (13:00 – 16:00): Boosts internal thermal mass during solar/wind generation peaks.
- Late Night Slot (22:00 – 00:00): Recharges domestic hot water for night-time showers.
2. Agile Octopus (For Battery & Solar Homes)
Agile Octopus updates electricity prices every 30 minutes based on day-ahead wholesale market prices. During periods of high North Sea wind generation, prices frequently drop below 5p/kWh or even turn negative (where you are paid to consume power).
3. OVO Heat Pump Add-On
OVO offers an 'Anytime' heat pump rate of 15p/kWh for the electricity consumed specifically by your heat pump, without changing your household unit rate. A great option for homeowners who do not want to schedule their heating around fixed time blocks.
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