Octopus Energy and EDF Energy · London · VAT included
Compare heat-pump tariffs on the same household shape
Dedicated heat-pump tariffs measured against one annual electricity figure and one derived usage pattern. This is backward-looking evidence, not a whole-market claim or a forecast of your home.
What this comparison covers
The supported public supplier APIs currently give comparable regional product prices for Octopus Energy and EDF Energy. This page includes only products they identify for heat-pump homes. General fixed, variable and smart tariffs remain on the supplier comparison pages.
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.
Heat-pump tariff comparison for London
Each estimate applies the same derived whole-year heat-pump shape to 6,000 kWh and includes a usable standing charge. It does not model the building, weather, heat-pump efficiency, installation cost, grants or control changes.
Price window: 2025-08-22 to 2026-08-22. Seasonal demand is not modelled, so use this to compare tariffs on one basis rather than to predict a winter bill.
EDF Energy
EDF Heat Pump Tracker£1,564a year for energy
23.34p per kWh on the shared heat-pump profile, plus 44.78p a day.
For heat pump owners: the standard variable rate with 10p a unit off in two windows a day, and no peak penalty.
Octopus Energy
Cosy Octopus£1,644a year for energy
24.81p per kWh on the shared heat-pump profile, plus 42.42p a day.
Cheap electricity in set blocks through the day, built around heat pumps.
What matters more than the headline cheap rate
Your building and flow temperature
Heat loss and system efficiency can move annual use far more than a tariff discount. Compare the tariff only after checking whether the home can stay comfortable at efficient settings.
Whether heat can be shifted safely
Cheap blocks help when the building or hot-water cylinder can store heat. They help less when the pump must work hard through the expensive hours to maintain comfort.
The expensive hours as well as the cheap ones
A tariff with a deep discount can also carry a peak rate. Compare the whole day and standing charge, not one promotional window.
Your measured half-hourly pattern
If you can download smart-meter data, the tariff replay measures your real pattern in the browser instead of assuming this one.
Continue the heat-pump decision
Heat-pump tariff questions
Frequently asked questions
Does this compare every heat-pump tariff in the UK?
No. It compares dedicated heat-pump products from Octopus Energy and EDF Energy because those are the suppliers whose regional prices the site currently reads from supported public APIs. Other suppliers and general time-of-use tariffs may be worth checking.
Why is the annual electricity figure only an illustration?
Heat-pump use depends on the building, weather, flow temperature, controls and system efficiency. There is no single official typical heat-pump household figure, so the page starts with a rounded illustration and asks you to replace it with metered annual use.
Does the cheapest estimate predict my next bill?
No. It applies one derived whole-year heat-pump shape to the prices available in the historical comparison window. It is useful for comparing tariffs on the same basis, but it is not a weather forecast or a model of your home.
Why might a tariff have no annual total?
A complete total needs both unit rates and a trustworthy standing charge. If a supplier feed publishes an implausible zero or no usable standing charge, the page shows the unit-rate evidence and refuses to treat the missing charge as free.
Should a heat pump run only in cheap periods?
Not necessarily. Comfort, frost protection and efficient low-temperature operation come first. A suitable home may pre-heat or heat water in cheaper windows, but forcing all heating into short bursts can be inefficient or uncomfortable.