330 kW photovoltaic plant to meet own needs and sell excess energy. The headquarters was built on the roof and ground areas of the company Moneten Dvor AD in the city of Sofia. VVT Engineering leads documentation to ERM West and Sofia Municipality, and the preparation of the project in all necessary parts. The structure was designed and built by VVT Engineering EOOD. It consists of a Schletter no-drill installation system, using concrete prestressing blocks for construction, and the ground structure made of galvanized cold-bent U-profile 60 x 40 x 3 mm, combined with a high-quality Schletter aluminum profile. The plant consists of 610 Bauer Solar photovoltaic modules with a power of 540W with a 20-year product warranty and 6 ZCS Azzurro inverters with a 10-year warranty and 50kW power. The entire construction of the plant took 30 working days. After the construction of the photovoltaic plant, all necessary declarations and quality certificates were issued for the purpose of commissioning.