The PVPSs were built on the rooftops of the ProAuto service centres in Sofia and Etropole and are owned by Geotrading AD, a GEOTECHMIN Group company. The investment is part of the Group’s environmental policy. The project is consistent with the efforts to promote the expansion of renewable capacity in highly urbanised areas, optimising the spaces required for green energy generation. The Etropole station’s capacity is about 35–37 MWh/year and is now in operation. The generated electricity is recorded by a real-time online monitoring system and covers ProAuto Etropole’s needs of electric power for 7 months. In addition to the online reporting, the system aggregates and presents data on the energy produced by day, month and year since the launch of the power station. The data are available on a mobile app, as well. It also tracks the positive effect of the station’s operation, e.g. 18 days of operation saved about 1.4 tonnes of CO₂ that would have been released in the air if the electricity had been generated from non-renewable sources.