The scoping document was written in wide-spread collaboration with all twelve municipalities and their relevant health inspection offices as well as the following:
- The Icelandic National Planning Agency
- The Environment Agency of Iceland
- Board of Reykjanesfolkvangur, a reservation area
- Board of Blafjallafolkvangur, a reservation area
- Health Inspection of Hafnarfjörður and Kópavogur
- Umhverfisstofa Reykjavíkurborgar - Reykjavík Environmental Office
- Health inspectorates - Kjósarsvæði
- Health inspectorates - Suðurland
- Health inspectorates - Suðurnes
- Ölfus municipality
- Mosfellsbær town
- Reykjavík city
- Garðabær town
- Hafnarfjörður town
- Kópavogur town
- Seltjarnarnes town
- Álftanes municipality
- Reykjanes town
- Grindavík town
- Vogar municipality
- Garður municipality
- Landowners
- Iceland Forest Service
- The Coast Guard of Iceland
- The Icelandic Civil Aviation Administration
- Sléttan - Ultralight aviation club
Landsnet plans to continue this collaboration throughout the production of the scoping document, according to the Act on Environmental Impacts nr. 106/2000. It also plans to add more people and partners to the list.
Southwest lines