Current Status of the World's District Heating Supply (2017)
Iceland (90%) 
※Source: Korea Energy Economics Institute (2020), Domestic and international group energy research and information exchange project in 2019
Fuels used for district heating in major countries
*CHP: Heat produced by CHP
**Environment-friendly fuel: New and renewable energy, heat from incineration, etc.
※Source: Korea Energy Economics Institute (2020), Domestic and international collective energy research and information exchange project in 2019
|CHP||Coal, oil||Natural gas||Eco-friendly fuel||Others|