Ingrid and Energiequelle GmbH said they have formed a partnership to develop grid-connected battery energy storage systems (BESS) with a combined capacity of 200 megawatts across Germany.
Energiequelle will lead project development, while Ingrid will take responsibility for financing, operations and optimisation through its internal trading and optimisation platform, the companies said. The projects will be installed in distribution grids at locations requiring additional flexibility, with most set to be ready for construction in 2026.
Ingrid chief executive Axel Holmberg said the collaboration strengthens the company’s expansion strategy. “This is a groundbreaking partnership for Ingrid in Germany and an important step in our European growth strategy,” he said. Holmberg added that the company aims to “optimize more than 1 GW of flexible plants in Germany” by 2030.
Ingrid said it currently operates or is constructing more than 450 MW of battery storage capacity and has raised over €300 million in capital. Its portfolio includes Finland’s largest storage facility, a 70-MW system. The company said it is also expanding into France and Spain.
Energiequelle managing director Michael Raschemann said the partnership supports the company’s long-standing role in grid infrastructure. “Our task is to advance the energy transition with innovative, reliable and flexible solutions,” he said. Since its founding in 1997, the company has built about 2,000 MW of grid infrastructure and connected over 1,700 MW of wind power capacity.
The companies said battery storage is essential for integrating renewable energy, strengthening the grid and improving economic efficiency. They added that storage technologies enhance participation in energy and flexibility markets, bolster security of supply and support electrification in industry and municipalities.
