Repeater stations for the telecommunications industry are often located in remote places and require highly dependable DC power. Solar Photovoltaic panels working with batteries are the technology of choice to provide power for. Microwave repeater stations. Telephone cable repeater stations. Satellite ground stations. Radio-telephone interlink units. PERFORMANCE AND SIZE: The solar photovoltaic system offers high reliability, no fuel or water requirement, efficient matching of power to load and low or no maintenance requirements. ALTERNATE ENERGY SOURCES: Repeater stations may be powered by the electrical grid or by a Diesel Generator for a Grid Extension. The major consideration is the cost of running the electrical subtransmission line to the repeater site; in cases where the repeater is at a remote location, this cost would probably be prohibitive. The repeater station could also be run by a diesel generator but such generators are not dependable for unattended operation at remote sites. Proprietary SPL Software will assist a telecommunications power supply user, evaluate his requirements and install the most cost-effective solar system.