By 1968, BP Baglan Bay was one of the largest petrochemical sites in Europe, employing 2500 workers at its peak in 1974.

Businesses locating at the park benefit from low cost electrical energy from the power station.

The Energy Park is also home to the Baglan Bay Innovation Center, the Sustainable Product Engineering Centre for Innovative Functional Industrial Coatings (SPECIFIC) project, Hi-Lex Cable System Ltd, Remploy Ltd, Montagne Jeunesse,[7] headquarters for Abertawe Bro Morgannwg University Health Board, and headquarters for Neath Port Talbot County Borough Council's service response centre.

[8] New facilities are under construction for Shield Medicare Ltd (a subsidiary of US sanitation supply company Ecolab) and the University of Glamorgan’s Hydrogen research and demonstration centre.

Construction was due to start in 2010 to meet a projected shortfall in power generation capacity in the UK and Wales within the next 4 to 6 years.

SSE now own the project and have submitted a variation to the plans to enable them to build an open cycle gas turbine power station.