Fig. 4: Scenarios for the number of heat pumps installed in Germany per year and the evolution to date.
From: Replacing gas boilers with heat pumps is the fastest way to cut German gas consumption
The very fast scenario considers narratives from owners of plumbing and heating companies, necessary government incentives, and a training offensive for professionals. The fast and accelerated scenarios overcome these limiting factors only to lesser degrees. The installers’ roadmap of the German Heat Pump Association35 was developed before the Russo-Ukrainian War started38. Data are listed in Supplementary Table S5.
