One of the most pressing problems of the 21st century is meeting the ever-increasing global demand for energy. One of the most important tasks today is the development of strategies and systems to deliver energy services taking into account ecological approaches. A solar system is installed on the eight buildings of the Zalaegerszeg Vocational Training Centre. The total inverter connection power of the planned solar panel systems is 300.2 kW. The rated peak power of the solar panels to be installed is 313,04 kWp. During the project 1204 solar panels with a power of 260 W will be installed. Locations: 1. Zalaegerszegi SZC Ferenc Vocational Secondary School and Vocational School (8900 Zalaegerszeg, Göcseji út 16) The two Fronius SYMO 15.0-3-M and Fronius SYMO 17.5-3-M rated outputs are 47.5 kW, with 195pb 260 W solar panel with a rated peak power of 50.7 kWp. 2. Zalaegerszegi SZC Széchenyi Istvan Vocational School and Vocational School (8900 Zalaegerszeg, Déryné utca 1.) The two Fronius SYMO 15.0-3-M and one Fronius SYMO 17.5-3-M rated output are 47.5 kW, with 189 pcs 260 W solar panel with a rated peak power of 49.14 kWp. 3. Zalaegerszeg SZC Ganz Ábrahám Vocational School (8900 Zalaegerszeg, Gasparich Márk utca 27) The nominal power of Fronius SYMO 12.5-3-M, Fronius SYMO 15.0-3-M and Fronius SYMO 20.0-3-M is 47.5 kW, with 190 pcs 260 W solar panel with a rated peak power of 49.4 kWp. 4. Vocational Secondary School and Vocational School of Mihály Munkácsy (8900 Zalaegerszeg, Gasparich Márk utca 24.) The installed Fronius SYMO 15.0-3-M, Fronius SYMO 8.2-3-M and Fronius SYMO 7.0-3-M have 30.2 kW, with 124pcs 260 W solar panel with a nominal peak power of 32.24 kWp. 5. Zalaegerszegi SZC Báthory István Vocational Training School Kinizsi Utcai Site (8900 Zalaegerszeg, Kinizsi utca 74.) The three Fronius SYMO 15.0-3-M rated power is 45 kW, to which 171pcs 260 W solar panel has a nominal peak power of 44.46 kWp. 6. Zalaegerszegi SZC Asbóth Sándor Vocational School (8360 Keszthely, Gagarin utca 2) The three Fronius SYMO 15.0-3-M rated power is 45 kW, to which 186pb 260 W solar panels have a rated peak power of 48.36 kWp. 7. Zalaegerszegi SZC Báthory István Vocational Training School (8900 Zalaegerszeg, Báthory István utca 58.) The installed Fronius SYMO 10.0-3-M nominal power is 10 kW, to which 39 pcs 260 W solar panel comes with a rated peak power of 10.14 kWp. 8. Zalaegerszegi SZC Asbóth Sándor Vocational Training College (8360 Keszthely, Gagarin Street 4.) The nominal power of Fronius SYMO 15.0-3-M and Fronius SYMO 12.5-3-M is 27.5 kW, with 110 pcs 260 W solar panel with a rated peak power of 28.6 kWp. Due to the specificity of the buildings, some of the solar panels are placed on flat roofs and on a special aluminium support structure, while the other part is installed on a tile roof with a special stainless and aluminium support structure. Direct current solar cables shall be routed in a duct to the inverters. The necessary protection devices shall be installed in the distribution boxes and connected directly to the DC inputs of the inverter. The AC distribution cabinet also includes the necessary protection intervals, which includes the solar system master switch and overcurrent and overvoltage protection devices. From the inverter to the cable to the solar AC distributor and a suitable connection point within the building, it shall be channelled. The planned small solar power plants connect at low voltage to the connection area of the installations.