Economy 7 and Off-Peak Tariff Calculator UK

Use this page to test whether an Economy 7 or similar off-peak tariff could reduce your household energy costs. Enter your current rates and usage, then adjust how much demand can shift overnight. You will immediately see whether cheaper night pricing offsets higher peak rates and standing charges for your specific profile.

This is especially useful if you run flexible loads such as EV charging, immersion heating, heat pumps, or battery charging. By modelling off-peak share directly, you can estimate how behavior changes affect total bill outcomes rather than relying on generic supplier examples. Add or remove technologies in the calculator to understand where time-of-use pricing is strongest.

Compare scenarios for your current tariff versus an off-peak option and review annual cost differences before switching supplier. The results help you decide whether your home can shift enough demand to make an Economy 7 style plan financially worthwhile.