Municipal energy supplier is systematically expanding its infrastructure and district heating network
The Zurich City Electricity Works (ewz) posted a profit of CHF 303 million on turnover of CHF 1.44 billion in 2025. During the year under review, the energy supplier invested CHF 244 million in networks, power stations and shareholdings. In addition, the ERZ district heating network was successfully integrated.
The Zurich City Electricity Works generated turnover of 1.44 billion Swiss francs in 2025, according to a statement from ewz. This represents an increase of CHF 11 million year-on-year. Operating expenses rose by CHF 64 million to CHF 1.02 billion over the same period. This was driven by the integration of the district heating network of Entsorgung Recycling Zürich (ERZ-Fernwärme) and additional energy procurement. A profit of CHF 303 million was reported, compared with CHF 391 million in the previous year.
“This strong result is primarily attributable to energy sales on the open market, a profit from the marketing of wind power production abroad and the targeted use of funds,” ewz Director Benedikt Loepfe is quoted as saying in the statement. “The successful integration of district heating, involving over 100 additional employees, impressively demonstrates our company’s adaptability.”
In the reporting year, ewz also invested CHF 244 million in networks, power stations and shareholdings. That is CHF 48 million more than in the previous year, the energy supplier writes. “Capital requirements will rise massively over the next ten years so that the necessary investments of over CHF 3 billion can be made,” explains Loepfe. “ewz’s current strong financial position enables us to make these investments in the future of energy and security of supply in the coming years using our own funds.” CHF 80 million of this year’s profit will be transferred to the city.