Overview EthosEnergy, established in 2014 as a joint venture between Wood Group PLC and Siemens Energy AG—combining their non-OEM rotating equipment businesses—has grown into a global independent service provider (ISP) headquartered in Houston and Aberdeen.Acquired by One Equity Partners in 2025, it leverages over 100 years of OEM heritage from Fiat/Westinghouse for heavy-duty gas turbines.…