District heating systems

Suðurnes district heating

Suðurnes - Iceland

Verkís services was feasibility studies, project planning and cost estimates, project management and design, supervision, detail design, tender documents and procurement: civil design, mechanical design and piping systems, electrical, control and monitoring equipment. Supervision of construction work, test and start-up activities.

 Sizes: 150 MW and 600 l/s
 Project time:  1976 - 

Project overview:
The municipalities in Sudurnes started cooperating on geothermal utilization in 1973. HS was founded in 1975 by the Association of Local Authorities in Sudurnes after well-loggings in two boreholes more than 1.500 m deep showed promising results. In 1976 the first houses in Sudurnes were connected to the new district heating plant in Svartsengi.

The installed power of the Sudurnes geothermal district heating is now over 150 MWth with energy provided by the Svartsengi combined heat and power geothermal plant located in the middle of the Sudurnes area. The geothermal district heating system supplies hot water to various municipalities in the area.

Verkis has designed the whole geothermal district heating system owned and operated by HS Veitur, including all pumping stations, storage tanks, the 53 km long transmission pipelines DN100 – DN500 and the distribution network in Reykjanesbær, Grindavik, Sandgerdi, Gardur, Vogar and at the Keflavik airport, including the former US navy base. The distribution system is a single pipeline system except in the Airport area where there is a double pipeline system.

In recent years, Verkís has carried out pressure and flow simulations of the entire transportation network in Sudurnes due to increased hot water consumption. Verkís has also conducted various feasibility studies together with a market study to support HS Veitur for the preparation of its development strategy.