Budarhalslina 1. - 220 kV Overhead Transmission Line

Budarhalslina 1 is an overhead transmission line from the substation at Budarhals to Hrauneyjarfosslina 1 at Langalda in south Iceland. Mannvit played an important role during the preparation of the HV line and the Budarhals HEP, including research, preliminary design and feasibility study. Mannvit also performed the environmental impact assessment (EIA) and supervision of related EIA work. At construction phase Mannvit carried out the design, tendering and tender documents as well as various tasks during construction, such as procurement assistance and assisting Landsnet‘s workers on-site during stringing of conductors and earth wires.


Búðarhálslína 1. - 220 kV - Mannvit.is

Budarhalslina 1 is a 5,6 km long 220 kV transmission line from Budarhals Hydropower Station to Hrauneyjafosslina 1 where it is T-connected. The required capacity for the line is 100 MVA although a 432 MVA capacity can be reached at 40°C because conductors were chosen in relationto mechanical breaking load. The environmental impact assessment (EIA) of the line was carried out by Mannvit and was performed parallel to the EIA of the plant itself but the line route was changed in 2010, as stated in a press release by Landsnet (owner and operator of the line).


  • EIA
  • 3D visual photos for EIA
  • Feasibility stage design
  • Final design
  • Cost estimation
  • Tender documentation
  • Mapping of quarries
  • Load assumptions
  • Tower type selection and tower overview drawings
  • Tower foundations, conductors and hardware
  • Tower spotting and track routing
  • Project schedule
  • Assistance during procurement and construction
  • Final reporting
100 MVA 
1 billion  ISK 
OHL and substation cost

Budarhalslina 1 and new substations at Budarhals hydroelectric power plant were formally commissioned on January 10th, 2014 when Ragnheidur Elin Arnadottir, Minister of Industry and Commerce connected the plant to the national power grid. The project as a whole will improve security of supply to the public and businesses alike. According to Landsnet (owner and operator of the line) the cost of Budarhalslina 1 and substation was 1 billion ISK compared to Landsnet‘s total construction cost in transmission of about 7 billion ISK in 2013.