The implementation of the task was technically very difficult due to the complexity of the detailed design, compounded by the dispersion and technical diversity of the infrastructure connected to the individual installations and the need to take into account the electrical and water installations already existing underground. The project aimed to maximise the use of available space on the ENS site and included the supply and installation of photovoltaic installations on the ground, on the roofs of the buildings: the Main Building, Administration Building, Water Treatment Station, Auxiliary Boiler Room, on the facade of the Main Building and in the form of car-ports on the car park.
For part of the photovoltaic installation located on the roofs and façades, SolarEdge technology has been applied, thanks to which each panel is monitored independently, through so-called optimisers. This ensures that the installation is resistant to external interference in the form of panel shading. The SolarEdge SE50K inverters used work with SolarEdge P650 optimisers. The technology used is characterised by very good energy efficiency and high fire safety. In the case of the ground-mounted photovoltaic system, Huawei technology was used in the form of high-power inverters, type SUN2000-60KTL-M0. The large fragmentation of the strings makes it possible to optimise their layout in relation to the position of the sun, and good software algorithms guarantee efficient electricity production.
In all installations, double-sided ZNShine photovoltaic panels type: ZXM7-SPLDD144 with a capacity of 530 Wp were used, which provide additional energy gain from the light reaching the rear surface of the panel. In order to ensure high efficiency of such solution on the roofs of buildings, a renovation layer of roof sheathing (mass with aluminium additive) with high reflection coefficient was applied. In installations on the ground, white clover was sown under the panels.
