The amendment concerns the contracting authorities, who are the Valdres municipalities, Nord-Aurdal, Sør-Aurdal, Øystre Slidre, Vestre Slidre, Vang and Etnedal, with the following 3 municipal/inter-municipal entities: Valdres Arbeidssenter AS, Vang Energiverk KF and Valdres Energiverk AS. See the tender documentation.