3 calculators
Home Energy
Solar payback, heat pump running cost, and household water usage calculators.
Calculators
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Heat Pump Cost Calculator
Compare annual heating running costs between a gas boiler and an air-source heat pump, with break-even electricity price.
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Solar Battery Payback Calculator
Model annual solar savings, export income, and simple payback period for a home solar PV system with optional battery storage.
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Water Usage Calculator
Estimate household water consumption and annual water bill from occupancy and usage habits, with saving tips.