Mumbai, Oct. 30 -- Automotive tier 1 supplier MAHLE has fully commissioned a photovoltaic-thermal (PVT) system at its manufacturing site in Vaihingen an der Enz, Germany, marking the largest installation of its kind in the country.

The 2,000-square-metre facility comprises over 1,000 PVT hybrid modules supplied by Dresden-based startup Sunmaxx, integrated with a geothermal borehole field and a heat pump system. The installation delivers over 430 kWp of electrical capacity and a projected annual output of 1,086 megawatt-hours of thermal energy, meeting almost the entire heating demand of the site previously supplied by fossil fuels.

The geothermal borehole field acts as a seasonal thermal storage unit, storing excess heat generated durin...