John Wood Group Plc is an energy service company, which engages in the provision of engineering, production support, maintenance management and industrial gas turbine overhaul, and repair services to the oil and gas and power generation industries. The company operates its business through the following segments: Wood Group Engineering and Wood Group PSN. The Wood Group Engineering segment offers services to the upstream, subsea and pipelines; downstream and industrial and clean energy sectors. The Wood Group PSN segment provides field support to producing assets through Brownfield engineering and modifications, production enhancement, operations and maintenance, training, maintenance management, and abandonment services. The company was founded by Ian Wood in 1982 and is headquartered in Aberdeen, the United Kingdom.