Stadtwerke Rosenheim utility cuts CO₂ emissions by 30%

In Germany, heating systems are a major contributor to carbon emissions, with 90% of heat energy generated from fossil fuels. Stadtwerke Rosenheim needed a way to expand its district heating network without increasing fossil fuel use, while improving resilience and meeting carbon reduction targets.

Stadtwerke Rosenheim integrated three Sabroe DualPAC heat pumps into its district heating system. Each DualPAC combines ChillPAC, HeatPAC, and HeatPAC HPX units into a single modular heat pump. These pumps draw heat energy from the nearby Mühlbach river and supply district heating water at 88°C throughout the year. The modular design enables high temperature lifts in a compact footprint, and the use of ammonia as a refrigerant supports sustainability and safety.

By integrating Sabroe DualPAC heat pumps into its district heating network, Stadtwerke Rosenheim has reduced its reliance on fossil fuels and improved energy security. The system delivers consistent heating throughout the year while cutting carbon emissions significantly, in addition to the following benefits:

• Around 2,640 tonnes of CO₂ saved annually
• 4.7 MW of renewable energy capacity added to the district heating network
• 18,600 MWh total capacity for year-round heating
• Greater energy independence for the Rosenheim community