3 Min Read (Reuters) - Energy Capital Partners (ECP) raised a $1.2 billion fund that it used to buy a 50% stake in U.S. renewable power and storage developer Terra-Gen from another of its funds, the private equity firm told Reuters on Thursday. FILE PHOTO: Wind turbines spin during a winter storm near Palm Springs, California, U.S., March 10, 2021. REUTERS/Mike Blake/File Photo The deal pays out investors in the fund Energy Capital Partners III, after the buyout firm invested in Terra-Gen in 2015. It also allows ECP to continue earning fees for managing the stake in the new fund. For Terra-Gen, the fund provides capital to support developing new projects, something that ECP III would not have been able to do as its cash was already fully deployed.