Energy Capital Partners has entered into a definitive agreement to sell Wheelabrator Technologies Inc., a leading owner and operator of waste-to-energy facilities, to Macquarie Infrastructure Partners, which operates within the Macquarie Infrastructure and Real Assets division of Macquarie Group. MIP will make the investment through one of its managed funds. "Wheelabrator is a high-quality waste-to-energy business, with a well-diversified portfolio of assets," said Karl Kuchel, CEO of MIP. "We look forward to partnering with Wheelabrator management and staff to ensure the ongoing success of the Company in the years ahead."