Heat Plan Denmark (Varmeplan Danmark) was the first ever study combining local mapping of the heat demand with national energy planning to create a holistic heat strategy for an EU Member State. It outlined how various solutions could be combined in the heating sector of Denmark, to simultaneously reduce energy costs and decarbonise the Danish heating sector. It was first published in 2008, with a follow-up study in 2010, both of which were instrumental in defining Danish policies for the heating sector. This project was a collaboration between Aalborg University and Rambøll.