Welcome — you're in.
Your access to the eSonnen calculator is confirmed. The full designer is launching imminently
to approved testers — we'll email you the moment it goes live on this URL.
- Map-based roof selection (real ESRI imagery + OSM building outlines)
- PVGIS solar yield modelling tuned to your azimuth + tilt
- Investment range, payback, EEG tariff, and BoM in a single view