Italy, Nov. 10 -- RWE has started construction of its first Battery Energy Storage System (BESS) in Italy.The 62,5-megawatts (MW) Ragusa battery will be located in Sicily. It will consist of 42 containers with lithium-ion batteries, being able to deliver its maximum output for 4 hours. This corresponds to a nominal storage capacity of 262,5 megawatt hours (MWh). Commissioning is scheduled for the end of 2027. Ragusa battery will provide balancing energy to stabilise the electricity grid. It also features the technology necessary to provide new grid forming services such as instantaneous reserve (inertia). In addition to the batteries, RWE will build the associated grid infrastructure. This includes a high-voltage transformer to connect to t...