The Swiss Association for Technology Transfer (swiTT) publishes technology offers from Swiss research institutions. Its "swiTTlist" also contains offers from the energy sector (search term, "energy").
Other technology offers from countries within the EU are available from the Enterprise Europe Network (EEN) database.
A comprehensive list of research groups that are active in the energy sector is available on the website of the Federal Office for the Environment (FOEN). In order to view a list of research groups in a specific segment of the energy sector you can filter by research topic.
As an aid to finding potential sources of financing, the FOEN has compiled a list of 650 foundations that are active in the environment and energy sectors.
Companies and private-sector research partners can be entered in the corporate database of the export platform for Swiss cleantech companies. This database can be used for carrying out systematic company searches by segments and sub-segments.