Tariff comparisons

Guides, analysis and updates on UK electricity tariffs for heat pump and EV households.

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Tariff comparisons

Economy 7 and heat pumps: why it usually isn't the right tariff in 2026

Economy 7 was designed for storage heaters and immersion tanks in the 1970s. Heat pumps are a different beast — they run throughout the day, not just overnight. That mismatch, combined with Economy 7's high daytime rate, means most heat pump households end up paying more on E7 than they would on a modern time-of-use tariff. Here's why — and the narrow cases where Economy 7 still makes sense.

· Ashley
Tariff comparisons

Is Octopus Energy good for heat pumps? An honest look at their tariffs, hardware and support

Octopus Energy dominates heat pump conversations in the UK — they install systems, run dedicated tariffs, and have more heat pump customers than any other supplier. But is that dominance deserved? This post looks at the Cosy Octopus tariff, their installation service, customer satisfaction data, and the cases where a different supplier might actually serve you better.

· Ashley