It is about 150 km of east of the Lincolnshire coast and started gas production in 2016.
In the first stage gas was produced by wells on the Cygnus Alpha platform and then routed by pipeline to the Bacton Gas Terminal via the Esmond Transmission System.
[1] The next stage entailed development of the north west part of the field produced from the Cygnus Bravo platform which was routed 7 km to the Cygnus Alpha installation.
The mixed gas arrives at Bacton with a minimum Wobbe index of 46.5 to 46.7 MJ/m3.
To maintain Cygnus flow a temporary reduction of Wobbe Index from 47.2 MJ/m3 to 46.5 MJ/m3 at the NTS entry point at Bacton terminal was agreed in 2020.