Extended Data Fig. 2: Share of Fossil-Fuel Boilers in EU-27 Member States in 2015 (Initial) and in the Baseline Scenario.
From: Meeting climate target with realistic demand-side policies in the residential sector

A, Initial 2015. B, Baseline Scenario.This figure explains why some countries do not rely on heat pump cost reductions or subsidies to meet climate targets. For example, Sweden, Finland, and the Baltic countries had a low share of fossil fuel boilers in 2015, while countries like the Czech Republic and Poland are projected to reach a similarly low share by 2050 due to current dynamics.