Solar Roof Price Calculator
This simple calculator gives a rough first estimate for a home solar system. It now defaults to European-style assumptions: euros, metric units, kWh, kW, and broad EU/UK installed-cost ranges. It is not a quote, permit plan, electrical design, or safety approval. Use it to understand scale before talking to certified local installers or buying equipment.
Estimate your starting solar size and budget
This tool defaults to European-style estimates: euros, metric units, kWh, kW, and common EU/UK installed-cost ranges. Switch on USD/imperial comparisons if you want a rough US-reader reference.
Assumptions: 30-day month, 75% production/system efficiency, about 2 m² per 400 W panel, and broad installed-cost ranges. EU country rules, VAT, grants, DNO/utility permissions, roof condition, shading, landlord consent, batteries, and certified electrical work can change the result a lot.
Before you trust any estimate
- Check your real electricity bill, not a guess.
- Look for shade, roof age, roof direction, and usable roof area in square metres.
- Ask local installers about permits, grid/export rules, VAT, grants, landlord consent, and safety requirements in your country or municipality.
- Treat batteries as a separate resilience decision, not just a price add-on.
- If you are reading from the US, use the optional USD/imperial comparison as a rough reference only.