Distribution system
From our production plants, we pump water into a pipeline network that reaches thousands of buildings throughout greater Stockholm.
Our plants are part of the cityscape
Our plants are well-known parts Stockholm’s cityscape, from Brista in the north to Högdalen in the south. Production data for our five largest plants is shown in the image on the right.
Brista plant
936 GWh heat
183 GWh electricity
Steam boilers
Waste and solid biofuel
Hässelby plant
176 GWh heat
28 GWh electricity
Steam boilers
Wood pellets and fuel oil
Värtan plant
2 631 GWh heat
402 GWh electricity
Ång- och hetvattenpannor, värmpumpar
Steam and hot water boilers, heat pumps, solid biofuel, bio-oil, fuel oil, energy from sea water
Hammarby plant
1 072 GWh heat
Heat pumps and hot water boilers
Electricity and bio-oil
No electricity production.
Residual energy from wastewater from Henriksdal treatment plant used in heat pumps
Högdalen plant
1 832 GWh heat
240 GWh electricity
Steam boilers
Waste, reclaimed wood, bio-oil and fuel oil
Distribution system
Our production plants pump water through an extensive pipeline network that reaches thousands of buildings in Greater Stockholm. Installations and customers are interconnected in large, flexible networks that enable optimised operations. We currently have two main networks: one for central and southern Greater Stockholm and one for the north-western part of the city. In total, Stockholm Exergi’s district heating system comprises approximately 3,000 kilometres of pipelines.
Electricity generation and stabilisation of the grid
Our energy system is flexible and enables both electricity generation via combined heat and power as well as electricity consumption, primarily through heat pumps. Together with our battery parks, this is contributing to a stabilisation of the electricity grid and an increase in the share of renewable electricity. During the autumn, we completed extensive upgrade work on our largest CHP plant in Värtan. The plant has the capacity to produce 200 MW of electricity. It is now based entirely on bio-oil and has an extended service life of at least 20 years.
Facts about our production system
- Circular energy recovery – A large proportion of the energy in the system comes from the recovery of residual heat, from waste incineration and from biofuels. This helps makes the energy supply more sustainable
- Flexible production – The company has several production plants, including at Värtan, Brista, Högdalen, Hässelby and Hammerby. These plants are able to use different types of fuel such as biofuel, waste and electricity to optimize energy production as needed
- Electricity generation – Stockholm Exergi also produces electricity at CHP plants for delivery to Stockholm’s electricity grid, which helps stabilize the energy supply
