Changes in land use are by far the largest single cause of biodiversity loss in Norway (Kålås et al., 2010). The protection of biodiversity is governed by the Nature Diversity Act (2009), and state that special care should be paid to land use, land use change and habitat degradation caused by development projects. This is also emphasized in the authorities' guidelines for development of energy projects (OED, 2007). The data on land occupation were obtained by use of data downloaded from ‘Norway satellite photos’ (www.norgeibilder.no). The occupied areas were digitized manually with use of a Geographical Information System (GIS), in this study the software ArcGIS 10.0 provided by ESRI's (ESRI, 2013).