Transmission line, 130 kV, Stamåsen

E.ON Elnät Sverige built two 130 kV lines to connect a wind farm in Stamåsen to the local grid. The lines consist of wood poles except where they cross the river Faxälven.

EFLA was responsible for tower spotting, all necessary field work, preparation of all drawings, lists and material specification.

About this Project

E.ON Elnät Sverige

June  2011 - May 2012

Jämtlands län


The project's objective

The main objective was to connect a new 60MW wind farm in Stamåsen. Two parallel 132 kV transmission lines where built. Length of each line was just over 4,7 km. The total number of towers was 70.

EFLA surveyed the line route, made tower spotting and the setting out of towers as well as evaluation of tower sites with respect to geotechnical estimates for foundation design. EFLA designed all the wood poles in the lines as well as designing steel towers for crossing the Faxälven river.

One of the challenges in the project was to prepare software for evaluating side profiles along the line route. Also, since most of the line route was covered with forest, surveying the route and evaluating it was challenging.

EFLA's role

  • Surveying
  • Tower spotting
  • Evaluation of tower sites and setting out
  • Geotechnical investigation
  • Preparation of drawings
  • Preparation of all lists, e.g. towers etc.
  • Structural design of wood poles and crossing towers of steel