RWG (Repair and Overhauls) is a provider of maintenance, repair, and overhaul services for industrial aero-derivative gas generators and power turbines used in power generation and oil and gas. It supports industrial aero-derivative gas generators (SGT-A35, SGT-A20, SGT-A05), gas turbines (Rolls-Royce marine Spey, Tyne, Olympus, WR21), and power turbines. The company also serves power generation and marine propulsion industries. RWG is a joint venture between Wood Group and Siemens.