Italian utility group Enel SpA (<a href="http://https://live.euronext.com/en/product/equities/IT0003128367-MTAA" target="_blank">BIT:ENEL</a>) on Friday said it has agreed to offload 49% of an Italian company holding the rights to a 1.7-GW battery energy storage systems (BESS) portfolio and some open cycle gas turbine (OCGT) plants.