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Plug-In Solar Cost Checker

A sober estimate beats a heroic sales number. Change every assumption and see what moves the answer.

InputsAll values stay in your browser
Your estimateIllustrative, not a quotation
Estimated annual saving£0
Annual generation0 kWh
Used at home0 kWh
Simple payback—
Ten-year value after kit cost£0

Model excludes finance, maintenance, degradation and export payments. Region figures are rounded planning assumptions.

How the checker works

Capacity is multiplied by a regional annual yield, then adjusted for direction and shade. Savings use only the electricity you expect to consume at home.

Use a cautious self-use figure if the house is empty during daylight hours. Smart plugs and timed appliances can improve it.