An increased market share for district heating and changes in its production have been two of the most important contributors in reducing greenhouse gas emission in Stockholm.
50 years ago, Stockholm initiated a cutting-edge project of creating an infrastructure for the distribution of district heating. District heating is currently produced by Fortum and comprises around 80% renewable fuel or energy from waste or residual heat. The system covers nearly 80% of Stockholm’s total heating needs.
Developing district heating
The district heating network is being continuously developed to further increase the proportion of district heating in the city. The conversion from oil heating to district heating has reduced greenhouse gas emission by 593,000 tonnes since 1990. This has also led to reductions in emissions of health hazardous substances.
The city is supplied by four major production plants. For smaller groups it might be possible to visit one of the district heating plants, Högdalen CHP plant (Combined Heat and Power), where the city’s waste is used for energy production.
Environmentally friendly cooling systems
Cold lake and sea water is used for the production of district cooling. The process utilises the cooling effect that develops in heat pumps, which extract energy from sea or wastewater. District cooling reduces carbon dioxide emissions in Stockholm by about 50,000 tonnes annually. The same heat pumps can be used for both district cooling and district heating depending on the season.
Estimated time: 1,5 hour