As a result of the tender procedure placed in the Competitiveness Database on September 15, 2022, the assembly of a photovoltaic micro-installation with a capacity of up to 49.9 kW was completed by EKO – ON Krzysztof Gawrońki, Piotr Walczak based in Krakow. The installation consists of a system of 3 separate installations with 3 inverters (inverters) and a mounting system in the structure on the roofs of the sewage treatment plant buildings: sludge dewatering and hygienization building, blower building, control room building and electrical switchboard.