Guides, analysis and updates on UK electricity tariffs for heat pump and EV households.
If someone refers you to EDF before 13 July 2026, you'll get £75 credited to your account. Here's what heat pump owners should know before switching.
Octopus Tracker prices your electricity differently every day, following the wholesale market rather than a fixed quarterly rate. On most days it comes in below the Ofgem cap. On some days it doesn't. For heat pump owners already on Cosy Octopus, it raises a real question: is the simplicity of daily-rate wholesale pricing worth giving up Cosy's guaranteed cheap windows?
British Gas Heat Power gives heat pump households 10 hours of half-price electricity every day — seven overnight from midnight to 7am, and three more in the early afternoon from 1pm to 4pm. There's no peak rate. The standard rate applies for the remaining 14 hours. It's a simpler structure than Cosy Octopus and suits households that want meaningful cheap windows without managing a peak penalty.
ScottishPower Heat Pump Saver has a distinctive midday off-peak window from 11:00–16:00 — when heat pump efficiency is highest. Rates vary by DNO region. This page shows the confirmed figures for every UK region, sourced directly from the tariff database, fixed until April 2027.
Good Energy's Heat Pump tariff offers a 05:00–09:00 off-peak window with 100% renewable electricity sourcing. Rates vary by DNO region. This page shows the current confirmed figures for every UK region, sourced directly from the tariff database, fixed until June 2027.
British Gas Heat Power offers 10 hours of half-price electricity daily — 00:00–07:00 and 13:00–16:00 — with no peak rate at any time of day. Rates vary by DNO region. This page shows the current confirmed figures for every UK region, sourced directly from the tariff database.
Cosy Octopus has three daily cheap windows — 04:00–07:00, 13:00–16:00, and 22:00–00:00 — but the exact pence-per-kWh rate depends on your DNO region. This page shows the current confirmed rates pulled directly from the tariff database: off-peak, standard, and peak for every UK region, plus standing charges.
Both tariffs are from Octopus Energy and both can deliver cheap electricity for heat pump owners. But they work completely differently. Cosy gives you the same three cheap windows every day, predictably. Agile gives you 48 half-hourly prices that change daily — sometimes very cheap, sometimes expensive. The gap between the two can be hundreds of pounds a year depending on how much automation you're willing to set up.
EDF FreePhase and British Gas Heat Power are the two main heat pump tariffs without a punishing peak rate. Both give you cheap overnight electricity; Heat Power adds a midday window that FreePhase doesn't have. FreePhase keeps you with EDF and has a simpler three-band day structure. Heat Power gives more total cheap hours but requires switching to British Gas. Here's the head-to-head.
Cosy Octopus and E.ON Next Pumped are the two most recommended heat pump tariffs in the UK right now. They take opposite approaches: Cosy concentrates deep discounts into 8 hours across three windows but charges a steep peak rate; Next Pumped spreads cheaper rates across 21 hours of the day with no extreme peak. Which one wins depends almost entirely on whether you can avoid those three peak hours.