Stabilizing voltage for long LV lines or sea cables. Supporting telecom base station transmitters for GSM and UMTS, vacation homes, weekend cottages, rural homes and stores, farms, fish farms, production plants etc. Provisional power supply for construction areas, tunnels etc. Stabilizing voltage in the grid when voltage fluctuation is caused by distributed generation like solar cells, hydropower or wind- power-plants. Stabilizing and lifting voltage on the LV side, when voltage drop is caused on 1kV or higher. For ground cables in rural or densely populated areas. Mounted on the ground or on poles.