The Cyprus Department of the Environment has approved the construction and operation of a modern energy storage facility with a capacity of 59 MW and a storage capacity of 120 MWh in the Psevdás community in the Larnaca district. HESS Hybrid Energy Storage Systems is planning to install a 59 MW facility with a capacity of 120 MWh, which would ease the strain on the European. Cyprus' Department of Environment has approved a project for what is set to become one of the country's first battery energy storage systems with HESS Hybrid Energy Storage Systems is planning to install a 59 MW facility with a capacity of 120 MWh. Transmission System Operator (TSO) Head. Pressed by the lack of electricity system flexibility, Cyprus is rushing to deploy battery storage facilities under indirect state control. The goal, he added, is to implement measures that address.