Home Battery Savings Calculator UK

Estimate whether home battery storage can lower your UK electricity bill by shifting demand away from peak prices. Set battery capacity and charging behavior, then compare annual costs with and without storage. This highlights the value of moving consumption into lower-cost periods and reducing expensive peak-time imports.

The calculator is most useful when paired with time-of-use tariffs because battery savings depend on the spread between peak and off-peak rates. You can combine battery settings with EV charging and household demand to see whether storage improves your overall setup, not just one isolated use case. If you already have solar, model both together to understand the full stack effect.

Create multiple scenarios to compare different battery sizes, charge strategies, and tariff assumptions. The output makes it easier to judge if a battery investment is likely to produce meaningful annual savings for your home profile before you commit to equipment or installer quotes.