In this paper we present a feasibility study for using high resolution and very high resolution satellite imagery for high and medium voltage power line monitoring. The main objective is to evaluate the potential of utilizing satellite data in power line maintenance in forested areas. The study suggests that satellite imagery can be used to (1) identify individual trees growing near the power lines, which pose a threat to the stability of the distribution lines, (2) evaluate the height of vegetation in high voltage power line corridors and (3) detect changes in the corridors and surrounding areas. The results indicate that satellite monitoring could become an important maintenance planning tool for electricity distribution companies in the near future.