the UK Technology 2020 estimates Net Zero scenario Swing Heating Gas boilers 22 million 0 -100% Electric heat pumps 240,000 14.5 million +5,942% Hybrid heat pumps 32,000 8.5 million +26,463% District heating 615,000 5 million +7,130% Other heating 5.5 million 2.8 million -49% Transport Petrol/diesel cars and vans 35.8 million 0 -100% Battery electric cars and vans 350,000 35.8 million +10,129%