Paderborn / Switzerland. Energy storage provider INTILION has successfully commissioned a large-scale battery energy storage system (BESS) in Kappel, Canton of Solothurn, together with Primeo Energie. The facility currently comprises four battery storage systems with a total of 16 battery containers, providing approximately 65 MWh of energy storage capacity and 25 MW of power output. The expansion to a fifth storage system has already been commissioned and will increase the total capacity to approximately 80 MWh and 30 MW by autumn 2026.
The utility-scale battery storage system is deployed as a stand-alone, front-of-the-meter installation. It stores electricity and feeds it back into the grid as needed to compensate for weather-related fluctuations in the growing share of renewable energy generation. In doing so, the system enhances security of supply, supports grid stability, and enables the efficient commercial optimization of renewable energy.
As the project owner, Primeo Energie commissioned INTILION to supply the battery energy storage system. Primeo Energie was responsible for construction management, site infrastructure planning, installation, and grid connection. INTILION managed the system design and engineering, procurement of all required components, delivery, and commissioning.
The cross-border execution of the project presented specific challenges in logistics, workforce planning, and administrative coordination, particularly with regard to Swiss labor notification procedures and customs clearance. These challenges were successfully addressed through a local interim warehouse in Switzerland and strong partnerships with regional service providers.
To ensure reliable long-term operation, Primeo Energie has selected INTILION's premium service package, which guarantees 97% system availability. A local service partnership combined with a dedicated spare parts package ensures an on-site response time of less than 24 hours – a critical advantage for projects outside the European Union with complex logistical and regulatory requirements.
"With the commissioning of the first four systems, we have demonstrated the performance and scalability of our platform. At the same time, the planned expansion to 80 MWh will create the foundation for additional grid-supporting flexibility – from engineering and system integration through to long-term service," says Simon Brügge gen. Feldhacke, Project Manager at INTILION.
This project is funded under the Renewable Energy Solutions Program of the German Energy Solutions Initiative of the Federal Ministry for Economic Affairs and Energy (BMWE).
The German Energy Agency (dena) is a centre of excellence for the applied energy transition and climate protection. dena studies the challenges of building a climate-neutral society and supports the German government in achieving its energy and climate policy objectives. Since its foundation in 2000, dena has worked to develop and implement solutions and bring together national and international partners from politics, industry, the scientific community and all parts of society. dena is a project enterprise and a public company owned by the German federal government. dena’s shareholder is the Federal Republic of Germany. www.dena.de
With the aim of positioning German technologies and know-how worldwide, the German Energy Solutions Initiative of the Federal Ministry for Economic Affairs and Energy (BMWE) supports suppliers of climate-friendly energy solutions in opening up foreign markets. The focus lies on renewable energies, energy efficiency, smart grids and storage, as well as technologies such as power-to-gas and fuel cells. Aimed in particular at small and medium-sized enterprises, the German Energy Solutions Initiative supports participants through measures to prepare market entry as well as to prospect, develop and secure new markets. German Energy Solutions | Home
With the RES programme, the German Energy Solutions Initiative of the Federal Ministry for Economic Affairs and Energy (BMWE) helps German companies in the renewable energy and energy efficiency sectors enter new markets. Within the framework of the programme, reference plants are installed and marketed with the support of the German Energy Agency (dena). Information and training activities help ensure a sustainable market entry and demonstrate the quality of climate-friendly technologies made in Germany. German Energy Solutions | Learn more about the Renewable Energy Solutions Program