Contact

Email: kontakt@solarrechnen.de. We usually reply within a week.

Your yield differs from the calculator

Send the share link from the calculator and the annual figures from your app or meter, ideally with a photo of the mounting. Common causes are afternoon shade, an inverter with 600 rather than 800 VA, or a year with little sun. If the error is ours, we correct it and add the case as a test.

Embedding

Energy agencies, tenant associations, solar clubs and newsrooms may embed the calculators free of charge: Embed a calculator.

What we do not offer

No quotes, no installer referrals, no roof surveys, no tax advice. For independent advice on site, contact the energy advice service of your consumer centre (Verbraucherzentrale).