Solar & Photovoltaics FAQ

RoofCheck.AI is a free, AI-supported decision and consumer-protection platform covering the entire life of a solar system: from the first roof assessment through quote, installer and contract checks to subsidies, grid connection, operation, warranty and damage claims. The roof analysis itself uses satellite data and the Google Solar API and delivers an assessment in about 2 minutes.

Yes, the solar analysis is 100% free. You can view the result immediately. Optionally, you can request quotes from qualified installers — that is also free of charge for you.

We use real satellite data from Google. Our analyses are based on the Google Solar API and EU PVGIS reference data. Actual values may vary depending on local conditions.

We use the Google Solar API, which is based on high-resolution satellite imagery and 3D models. In addition, we use weather data and regional solar irradiation values.

Only your address. Our system automatically detects your roof and analyses its orientation, tilt and area. Optionally, you can provide details such as your electricity consumption for more detailed results.

The Google Solar API covers large parts of Germany. For some older buildings or very rural areas, we use simulation data based on statistical averages.

kWp (kilowatt peak) is the rated output of a solar system under standard test conditions. A 10 kWp system can generate 10 kW of power under optimal conditions.

In the DACH region (Germany, Austria, Switzerland), a system produces around 900–1,100 kWh per kWp per year. A 10 kWp system therefore generates approx. 9,000–11,000 kWh annually.

Whether a system is worthwhile depends on factors such as location, roof, consumption profile, quoted investment and applicable tariffs. These details do not support a universal payback period. Compare actual offers and local conditions.

A south-facing orientation is optimal but not essential. East-west orientations still achieve around 80–90% of the yield and have the advantage of a more even electricity production.

Yes, that is actually ideal. During a roof renovation you can integrate photovoltaics directly and save twice: through the new roof and through solar power. In many German federal states, a solar mandate even applies to roof renovations.

An energy-efficient roof renovation typically costs 150–300 EUR per square metre. With KfW subsidies (Germany) and tax benefits, you can recover up to 40% of the costs.

With your consent, your analysis is reviewed for hidden risks by solar and insurance partners in our network (GDPR-compliant solar specialist contractors and insurance partners). You receive an assessment of where you are protected and where gaps exist.

No. The protection check is free and non-binding. You decide for yourself whether to accept any recommendations.

Solar specialist contractors and insurance reviewers in our network who assess your analysis. Partners contact you by email. Telephone contact only with your consent. Withdraw at any time via support@roofcheck.ai.

Your data is processed in compliance with the GDPR and used only for the stated purpose. We do not pass on any data to third parties without your consent. You can withdraw your consent at any time (Art. 7(3) GDPR).

We use Plausible Analytics, which works without cookies and is fully GDPR-compliant. No personal data is collected.

Yes — RoofCheck.AI covers all EU-27 countries plus Switzerland and the United Kingdom. Users in the EU are protected by the GDPR, in the UK by the UK GDPR, and in Switzerland by the new Swiss FADP (nFADP). In all 29 markets, data is only used with explicit consent.

Not currently. Current tariffs and individual eligibility depend on factors such as country, system type and commissioning date; RoofCheck does not currently verify them. Check with your grid operator or national authority.

All solar analyses are free for consumers. RoofCheck.AI does not sell solar systems and is funded through a partner programme with solar and insurance partners in our network. The analysis results are calculated algorithmically and are not influenced by referral partnerships. The optional sharing of your data with partner companies in our network requires your explicit consent — and can be withdrawn at any time.

We use the most comprehensive publicly available data sources: EU PVGIS (the European Commission’s satellite-based yield data atlas), the Google Solar API (high-resolution 3D roof modelling) and Eurostat electricity price data (updated quarterly). RoofCheck.AI is continuously being developed — we are constantly building new connections to institutions and authorities to improve data quality and validate it institutionally. Every analysis includes source references.

No — never. Your analysis data is not sold. Data is only passed on to partners (installers or insurance partners) with your explicit, voluntary consent via a separate checkbox in the lead form. This consent is optional, can be withdrawn at any time, and is not a prerequisite for the free use of RoofCheck.AI.