My Heat Pump Tariff Calculator — Are you on the right tariff?
Heat pumps use a lot of electricity — so tariffs built specifically for heat pump households, with cheaper rates during the hours your system works hardest, can save you money.
Check my heat pump tariffHow much could you save?
Example: a heat pump household in London that shifts its heating into off-peak hours could save around £340 a year by moving from a standard variable tariff to Heat Power (heat pump).
Illustrative example, updated daily from current rates. Your own saving depends on your home and how much you can shift — check yours with the calculator.
Common questions about heat pump tariffs
Do I need a special tariff for a heat pump?
You don't have to have one, but a heat pump on a standard single-rate tariff usually costs more to run than it needs to. Heat pump and time-of-use tariffs offer cheaper windows that a heat pump can be set to make use of, which can cut running costs noticeably.
What is the best heat pump tariff in the UK?
There isn't a single best one — it depends on when your heat pump uses electricity and which region you're in. Cosy Octopus, E.ON Next Pumped, British Gas Heat Power, ScottishPower Heat Pump Saver and EDF Heat Pump Tracker all suit different households. The calculator compares them against your actual usage to find the best fit for you.
How do I know which tariff I'm currently on?
Your tariff name is on your latest energy bill or in your online account. If you've never switched since getting your heat pump, you're likely on a standard variable tariff, which usually isn't the cheapest option for a heat pump household.
How much can a heat pump tariff save?
It varies by home, but households that can move heating demand into cheaper off-peak windows often save a meaningful amount each year. The calculator gives you a personalised figure based on your own usage rather than an average.