Zurich strengthens energy future with solar and storage obligation
The Zurich cantonal government wants to generate more solar power from its own roof and at the same time promote the development of long-term energy storage systems. Two amendments to the law are intended to promote security of supply and self-production, with a sense of proportion and a spirit of innovation.
The largest unused power plant is located on Zurich’s roofs. Around 6 terawatt hours of solar power could be generated annually, almost two thirds of the canton’s electricity requirements. The cantonal government wants to exploit this potential. In future, all suitable roofs over 300 square meters are to be fully covered with solar systems. New buildings are subject to the obligation from the time of construction, existing buildings when the roof is replaced.
In this way, Zurich is focusing on proven structures. Solar energy is generated locally, can be implemented quickly and hardly encounters any resistance. It strengthens self-sufficiency, especially if surplus summer electricity can be stored.
Storage as a bridge to winter
The way to a secure winter supply is through storage. Three quarters of solar power is generated in the summer months. A surplus that should be available for long-term use in the future. The Government Council wants to oblige grid operators to promote long-term storage in a technology-neutral way.
A moderate levy of no more than 0.5 centimes per kilowatt hour will feed the subsidy fund, which will be administered by the EKZ. For households and businesses, this means around two percent higher electricity costs. Hardship regulations protect electricity-intensive companies.
Law with a sense of proportion
Where systems are uneconomical, financial hardship exists or there is no grid connection, exceptions remain possible and the obligation does not apply. Protective interests for the landscape and townscape are also weighed up.
Zurich is thus sending out a pragmatic signal. Instead of hoping for large-scale projects in the Alps or wind farms, the potential is being used locally. The combination of nationwide solar production and a storage strategy forms the backbone of a secure, renewable energy future in the canton.