NEW YORK & BOSTON–(BUSINESS WIRE)–InfraBridge, a leading global infrastructure manager and a division of DigitalBridge Group, Inc. (NYSE: DBRG), and ArcLight Capital Partners (with its affiliates, “ArcLight”), a leading infrastructure investor with a long-standing focus on critical electrification infrastructure, today announced the signing of a definitive agreement for ArcLight to acquire InfraBridge’s 50% stake in Invenergy AMPCI Thermal Power (“IATP”), a jointly owned power portfolio in wh