Cooperation for more solar power in Zurich and eastern Switzerland

The Basel-based energy supplier IWB has acquired Senero AG. By acquiring the solar specialist, IWB intends to expand its position in the field of renewable energies.

Basel/Winterthur, July 2025

The Basel-based energy supplier IWB has acquired the Winterthur-based solar specialist Senero AG. According to a press release, IWB intends to expand its position in the field of renewable energies. Senero’s position will therefore be significantly expanded with access to IWB’s structure, size and integrated range of solutions.

In the cooperation, IWB intends to invest in its own and the expansion of decentralised solar power production and thus make a contribution to security of supply and the energy transition, according to the press release. The company plans to install 150 to 200 megawatts of photovoltaic capacity (megawatt peak/MWp) on roofs and façades for private and business customers by 2030. Currently, 55 MWp have already been installed. In addition, IWB offers its customers comprehensive services in connection with the connection for self-consumption (ZEV). Customers are supported in setting up, operating and managing ZEVs.

Senero is contributing its expertise in the installation of photovoltaic systems (PV), batteries and charging stations for electric cars to the new partnership. The company installs 120 photovoltaic systems every year.

“Together with our solar companies Planeco and Kunz Solartech, IWB can realise solar systems for companies and private customers throughout German-speaking Switzerland thanks to Senero. We can now strengthen our sales activities, particularly in the Zurich area and eastern Switzerland,” said Markus Balmer, Head of Sales at IWB, in the press release. “We expect continued strong growth in the solar industry, even though the current market environment has become more difficult. There are still far too many roofs without PV, and the legal framework for PV systems has improved with the new energy legislation.”

Fabian Krämer, Co-Managing Director of Senero, sees security and a long-term perspective in the takeover by IWB. “IWB is a large and established partner that offers our employees secure prospects for the future. Together with IWB, we can continue our success story in the solar market and realise many more systems for our customers,” Krämer is quoted as saying.

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