Swiss Solar Observatory 2026
National indicators, verified aid routes in eight cities and reusable CSV/JSON files with their verification date.
Open dataOpen resources
Solar data and guides for Switzerland.
A selection of free data, methods and tools for owners, municipalities, journalists and professionals who want to verify a solar project before comparing it.
Data methodology
Official sources, assumptions, limits and verification path to understand what a solar figure allows – or does not allow – to conclude.
Read the methodSolar calculators
Production, cost, savings and profitability benchmarks to compare with your roof, your consumption and your DSO.
Open calculatorsCompare a solar offer
A practical checklist to check the price, components, guarantees, connection, procedures and exclusions of an offer.
See the checklistLocal guides and installers
Use the cantonal pages, city guides and directory as starting points, then check authorisations, insurance and references.
See local resourcesCite or reuse data
To use the CSV or JSON, indicate “Solar Panel Swiss, Swiss Solar Observatory 2026”, the update date and the link to the source page. Time-sensitive amounts should remain verified with the originating authority.
Recommended Citation
Solar Panel Swiss, Swiss Solar Observatory 2026, https://solarpanelswiss.ch/en-ch/observatoire-solaire-suisse
To prepare your own project
These resources provide a framework for verification. For a decision, complete them with the data of your address, your consumption, your network and your contractual offer.
Check your roof