Large-scale storage facility boosts energy efficiency, supply reliability, and cost-effectiveness
Fill sets another milestone in sustainable energy supply: Since the commissioning of the new Battery Park, a modern large-scale storage facility with a capacity of 6 MWh, the machine engineering company from the Innviertel region has been able to significantly optimize its self-generation of electricity and reduce its dependence on volatile electricity prices. The Battery Park was constructed at the end of 2025 on the Fill premises in Gurten (Upper Austria) and successfully connected to the grid in the spring. The facility consists of 28 individual energy storage modules, each with a storage capacity of 215 kWh. Fill can now use the solar power it generates even more efficiently and deploy it specifically when it is needed within the company.
Gurten, May 7, 2026 – The installed storage capacity opens up new possibilities for Fill in terms of self-sufficiency: On weekends, the entire company is powered by surplus PV electricity - without drawing power from the public grid. On average workdays, the storage system bridges the night hours and ensures that the solar power generated during the day is used optimally. “Our goal is to charge all excess power from our PV systems into the storage units and feed it back to our consumers as needed,” explains Günter Redhammer, COO of Fill. A key advantage: Until now, the PV systems had to be partially taken off the grid on particularly sunny days - especially on weekends. “The reason for this was highly fluctuating electricity prices, which can even drop into negative territory when grid utilization is high. In such cases, we would have had to pay to feed PV electricity into the grid,” adds Redhammer. The Battery Park provides an economically and energetically sensible alternative here.
Optimal utilization thanks to AI-supported control
Even during the winter months, when Fill’s PV electricity production is lower, the storage system offers significant advantages. AI-supported control software continuously optimizes self-supply. The system intelligently decides whether to charge the storage system from PV systems or - when prices are low enough - from the grid. At the same time, Fill actively helps relieve the strain on the power grid, as the storage system cushions consumption peaks from production.
Strong partnerships for a forward-looking project
The project was planned and implemented in close collaboration with long-standing partner companies hapec GmbH and EBG GmbH from Ried. Together, they realized a forward-looking solution that combines economic efficiency, sustainability, and security of supply. With the Battery Park, Fill once again underscores its commitment to combining technological innovation with responsible energy management.
Corporate Data
Fill is a leading international machine engineering company based in Gurten, Upper Austria. With sophisticated high-tech systems and custom manufacturing solutions for metal, plastics and wood, Fill makes its customers the best in their fields. The automotive, aviation, sports and building industries all benefit from Fill's expertise.
Since it was founded in 1966, the company has distinguished itself through enormous innovative strength, strong values and the best jobs. "If you are seeking the best solution, shape your future with Fill,” is the guiding principle of the company’s more than 1,000 employees. “We are one!" is their vision and stands for togetherness with the team and with customers, suppliers and partners.
The company is 100 percent family-owned and is managed by Andreas Fill (CEO), Martin Reiter (CFO), Alois Wiesinger (CTO) and Günter Redhammer (COO). In 2025, Fill generated revenue of 205 million euros.
If you have any questions, please do not hesitate to contact us:
Fill Gesellschaft m.b.H.
Fillstraße 1, 4942 Gurten
Martina Moserbauer
martina.moserbauer@fill.co.at
Caption:
The project partners are pleased with the successful implementation: (from left) Günter Redhammer (Fill), Hannes Rathbauer and Michael Haselberger (hapec GmbH), Paul Pumberger and Ludwig Piereder (EBG GmbH), and Dominik Heinzlmaier (Fill).
Photo: © Fill
