Cleantech21 Foundation

Cleantech21 Foundation

Reitergasse 11
8004 Zürich

Phone 058 450 10 00 *
* No advertising material


Cleantech21 Foundation (C21) is a fully independent, not-for-profit foundation with the mission to contribute to the fight against climate change. C21 has a +10y track record, at the intersection of technology, business, and regulation.

Products, services

C21 selectively researches potential activity areas showing a high leverage for climate action. For specific project opportunities, C21 defines development objectives and brings together different partners form the public and private sector.


#CAP - ClimateAction Advocacy Platform
Climate Ledger Initiative (CLI)

Certificates, awards

Fully registered and tax-exempt
Data source: Swisscom Directories AG

Web pages
Franzsika Barmettler Foundation for Global Sustainability (FFGS) Yannic Steffan Foundation for Global Sustainability (FFGS) swisscleantech