Smart Energy & Monitoring

You can’t cut what you can’t see. Start with the free data from your smart meter, then add detail only where it helps: a plug-in meter for one appliance, or a circuit-level monitor for heat pumps and EV chargers. We also cover time-of-use tariffs that reward shifting your usage.

Calculators for this topic

Every figure in these guides links to its source and shows when we last checked it. Read how we research, or tell us if something has changed.