ABB will deploy its complete electrical, instrumentation and control package, motors and variable speed drives for the powerhouse of the heat pump, which will be the world’s largest seawater heat pump based on CO2 as refrigerant. With Esbjerg facing the UNESCO world heritage area of the Wadden Sea, the careful selection of the right pump was essential. The 50 MW seawater heat pump system from MAN Energy Solutions, a long-standing customer of ABB, converts electrical energy into thermal energy and uses toxicologically safe CO2 as a refrigerant for the entire system cycle.As part of their 2030 strategy to pursue a 100 percent fossil free heat production with zero loss of applied resources, DIN Forsyning is developing a new hybrid renewable district heat plant to replace heat currently supplied by Esbjerg coal-fired combined heat and power plant. For the CHP plant, which produces about half of all district heating for Esbjerg, to be decommissioned in April 2023, DIN Forsyning had to be ready with alternative heat sources for the district heating, which can reduce primary energy consumption by 50 percent and generate low-carbon energy from heat pumps.ABB’s technology will contribute to the replacement of the coal-fired plant as the main source of heat for the city of Esbjerg and get closer to the goal of reducing carbon emissions in the city. It will also be deployed to ensure that the entire heating network can be powered from renewables, and distributed to the plant, through connections to the offshore wind turbines in the North Sea. In addition, ABB will supply a medium voltage variable speed drive, motors, as well as electrical and control solutions to support the high efficiency of the system and the accurate control of this massive heat pump.