From development to plant handover: we offer you comprehensive services from a single source.

Swiss Engineering.

dhp covers the entire value chain and controls all areas itself – even where external specialists provide support. We develop, manufacture and plan the solar folding roof projects at our own highly automated production site in Zizers/Graubünden, Switzerland. We are certified by ISO 9001 and ISO 14001.


Project management & construction.

Our project managers, external specialists and the installation team work hand in hand and always in close exchange with the client. Cost estimates, tenders, procurement, cost control and scheduling: these are the disciplines in which we are experts. This is how we create solar folding roofs that please everyone – the client, our partners and ourselves.


Monitoring & Service.

We monitor your solar power plant 24/7 via a specially developed control centre. The service contract also includes the initial intervention and the annual inspection. We are happy to offer further services such as energy management and optimisation as well as detailed analyses and reporting on request.



We call it “solar as a service”. We offer you various options for realising and financing a solar folding roof project. Whether pay-per-use, power purchase agreement (PPA) or rent-purchase model: together with you, we will find the best solution.


Did we spark your interest?

Gian Andri Diem is at your disposal for further information.

Or visit us at a trade fair!