Posts tagged #economy-7

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.

How to Create a Custom Tariff: Standard, Economy 7 and Time of Use

Not every deal is in our database — and sometimes you want to model a rate before you switch. Here's how to add your own Standard, Economy 7 or Time of Use tariff and pit it against the rest, step by step.