  The paper considers energy consumption in 5G cellular networks powered by
Renewable Energy Sources (RESs) and equipped with Reconfigurable Intelligent
Surfaces (RISs) and tethered Unmanned Aerial Vehicles (UAVs), acting as mobile
access points. The study was focused on the energy side of the Radio Access
Network (RAN) located in the city of Pozna\'n in Poland. The profit associated
with the use of renewable energy generators, i.e. photovoltaic panels (PVP) for
base stations (BSs) is presented in the form of two factors: the average number
of UAV charges (ANUC) to provide continuous access to mobile services for
connected user equipment (UE) terminals, and the average reduction in energy
consumption (AREC) of the wireless system.
