Energy & Utilities Calculators
Energy & Utilities calculators and planning tools
1 Calculators
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environmental & sustainabilityenergy & utilitiessmart thermostat savings calculator
About Energy & Utilities Calculators
Cut energy use and bills with free calculators. Estimate smart-thermostat savings, EV charging savings, electricity costs, and appliance running costs.
Energy upgrades pay off in ways that are hard to judge by eye. These tools quantify savings and payback so you can prioritise the changes that help most.
Frequently Asked Questions
How much can a smart thermostat save?▼
The smart thermostat savings calculator estimates annual energy and cost savings, plus a simple payback period, from your heating and cooling use.
How much does it cost to charge an EV?▼
The EV savings calculator compares charging costs against petrol to estimate your savings per mile and per year.
Are these calculators free?▼
Yes — every energy calculator is free with no account.