Three large-scale hydropower plants were also selected from Sogn og Fjordane County: Øksenelva (135 GWh/yr), Leidøla (462 GWh/yr) and Årøy (GWh/yr), all reservoir-based plants (Fig. 1).
All the locations used in the study are within the same region in Norway we assume that the biophysical characteristics of the locations are as similar as possible, given the differences in technology. Each technology exploits different types of natural resources, i.e. small-scale hydropower plants will typically be located in steep terrains with small tributaries; wind power plants in open areas exposed to high and constant wind resources.