Energy Capital acquired the 830 MW Red Oak power plant in Sayreville, New Jersey from a subsidiary of The AES Corporation in April 2012. Red Oak is a 2002 vintage combined cycle gas turbine facility that uses proven low heat rate Siemens 501F technology, which has a long track record of reliability in power plants across the U.S.

Red Oak sold power under a long-term contract.

In November 2013, Energy Capital sold Red Oak to The Carlyle Group.