The world’s largest CO2 heat pump has officially begun operations in Denmark, marking a significant milestone in renewable energy heating systems. This cutting-edge seawater heat pump facility, located at the Port of Esbjerg, is capable of generating an impressive 70 MW of energy, enough to heat 25,000 homes annually. The project not only represents a leap forward in sustainable heating solutions, but also serves as a model for cities worldwide to achieve decarbonisation in their heating infrastructure.