Post by Bilfinger

»57 meters tall, 31 million liters of water – and yet, at its core, quite simple: a thermos for the heat transition.« 🔋↗️ … and a Milestone for our customer Iqony in Gelsenkirchen, Germany! 💪 Last week, the city’s new heat accumulator was officially inaugurated in a ceremony attended by North Rhine-Westphalia’s Minister of Economic Affairs Mona Neubaur, Gelsenkirchen’s Mayor Andrea Henze, and representatives from Iqony. The event underscored the importance of this investment for a sustainable and future-proof heat supply. 🎉 Bilfinger fully realized the two-zone heat storage system, thereby making an important contribution to greater flexibility, security of supply, and the decarbonization of district heating in the Ruhr region. After about two years from engineering to assembly and a successful trial run, we were able to hand over the large-scale heat accumulator to Iqony at the end of February 2026. 👏 Our special thanks go to all our colleagues who contributed to the successful delivery!