Axpo and energieUri set to build some of Switzerland's largest battery storage facilities

15.09.2025 – With large battery storage systems playing an increasingly important role in the expansion of renewable energies, Axpo and energieUri AG plan to build their own facilities at the same industrial location in Gurtnellen, Switzerland. Work is due to begin in the next few days.

Axpo and energieUri will construct two large battery storage systems (BESS) with a capacity of 50 MW and 8.6 MW respectively, both in the Platti industrial district of Gurtnellen in Uri canton. The systems will be supplied by Fluence, a leading BESS  provider, while Axpo subsidiary CKW will install and connect them to the power grid, working in cooperation with energieUri.

From initial concept to the construction phase, Axpo and energieUri AG have cooperated closely on the project. Commissioning is planned for the first half of 2026.

Axpo’s Head of Batteries and Hybrid Systems Frank Amend said: “With this initiative, we are making an important contribution to the flexible provision of electricity and the security of energy supply in Switzerland.”

Fluence Energy GmbH Managing Director Markus Meyer said: “We’re delighted to be making a key contribution to this pioneering storage project. The two plants impressively demonstrate how large-scale battery storage can strengthen security of supply and flexibility in the Swiss energy system.”

Expertise in the battery storage market

Axpo has been active in the development, construction and commercial optimisation of large-scale battery systems in Switzerland and Europe for several years. Axpo is now also investing in Switzerland with its latest project. The 50 MW Gurtnellen plant announced today will be capable of storing up to 100 MWh of energy. EnergieUri will also build an 8.6 MW storage facility on the same site as Axpo to meet the needs of the canton Uri. Both facilities are located in the Platti industrial area in Gurtnellen.

Projects in Switzerland and Europe

Axpo is also continuing to expand its battery storage systems business internationally. Frank Amend added: “The importance of large storage capacities has grown significantly as the energy transition progresses. We will continue to expand our storage activities and over the next three years aim to achieve a total installed capacity of several hundred MW, with projects planned in Germany, Spain, France, Italy and Poland, as well as Switzerland.”

Innovation continues in the canton

energieUri CEO Werner Jauch noted that other visionary energy projects are emerging in the hydropower canton of Uri: “In addition to expanding hydropower and battery storage, energieUri is currently working with partners to build a wind farm, the first alpine photovoltaic plant in Central Switzerland and, together with Axpo, a hydrogen production plant. Innovative projects like these are needed to successfully master the numerous challenges of increasingly volatile and dynamic energy production.”