Working tools
Calculators that show their working. No marketing-friendly round numbers and no postcode form that just sends your details to an installer.
Solar
Roof orientation, shading, your tariff and your consumption shape. Year-by-year breakdown.
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Battery
Drop in your evening load shape. Returns the smallest battery that captures most of your shiftable energy.
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EV charging
Smart-tariff overnight charging against standard rates and against an ICE equivalent.
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Heat pumps
A rough check on the survey number your installer is quoting. Useful for spotting an oversized quote.
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