Construction took place in 1994. eni bought BHP Billiton's interest in the Liverpool Bay Development in April 2014.

It is situated just off the A548, next to the North Wales Coast Line and run by eni Liverpool Bay Operating Company Ltd, with offices at Llaneurgain House at Northop Country Park.

The hydrocarbon dew-point of the gas is reduced by mechanical refrigeration to a quality suitable for pipeline transportation.

The treated gas is piped to Connah's Quay Power Station at 30 bar via a 24 in (61 cm) diameter, 27 km (17 miles) pipeline.

Any gas surplus to the fuel requirements of the power station is further treated and delivered to the Burton Point terminal of the National Transmission System (NTS).

These were previously owned by BHP Petroleum Great Britain plc, LASMO (ULX) Ltd and a small amount by Centrica.