Porsgrunn District Heating

The district heating plants in Herøya in Porsgrunn Municipality in Telemark County use surplus heat from the production plants of the fertilizer group Yara International and are connected to the district heating network in Porsgrunn.

Ownership: Statkraft is an indirect owner of this plant through its ownership in Skagerak Energi AS
Production: 27 GWh
Power: 34.5 MW

District heating plant 1 in Herøya Industrial Park is equipped with a 10 MW surplus heat exchanger connected to Yara's fertilizer plant number 4, and a 15 MW peak load exchanger that uses primary steam from Yara.

District heating plant 2 in Herøya Industrial Park has two 15 MW surplus heat exchangers connected to Yara's calcium nitrate plant. In addition, a 15 MW peak load exchanger will be completed in 2017 to make use of primary steam.

At Kjølnes in Porsgrunn Municipality, a reserve plant has also been established with a 9.5 MW LPG (liquefied petroleum gas) boiler. This district heating plant is planned to be expanded with a 7.5 MW LPG / biofuel boiler in 2017.

The customers of Porsgrunn district heating are public organizations and private businesses, as well as various large residential complexes. District heating is used for heating and hot water in several buildings in Porsgrunn, in addition to extensive street warming in winter.

When fully developed, all these facilities are planned to produce around 50 GWh in 2025.

The plants are operated by Skagerak Varme AS, a wholly owned subsidiary of Skagerak Energi AS.