The field, which is expected to contribute 5% of UK gas production, is the sixth largest gas field in the southern North Sea.
First gas produced from the field via the Cygnus Alpha platform has been exported to the Bacton gas terminal in North Norfolk for processing.
Engie E&P UK managing director Ruud Zoon said: "Together we have successfully achieved first gas production and export from the Cygnus field.
"First gas from Cygnus represents a significant boost to the UK’s long term energy security, with an estimated production life exceeding 20 years.
“Furthermore, with over 80% of the contract work secured by British businesses – including fabrication yards in Hartlepool, Methil and Burntisland – it is a showcase for the technical and commercial excellence of the UK oil and gas supply chain."
The Cygnus complex features four platforms and comprises a total of 10 wells and two subsea structures. The field is expected have a plateau production capacity of 250 million cubic feet per day.
Engie E&P UK operates the field with 38.75% while other partners include Centrica (48.75%) and Bayerngas (12.5%).
Centrica Exploration and Production business managing director Chris Cox said: "The Cygnus field is hugely important to the country’s energy supply, so we are proud that gas is now flowing from the field and into homes and businesses across the UK."
The partners are currently working on next phase of field development from Cygnus Bravo to bring additional capacity on stream.
Image: The Cygnus field in UK North Sea is expected have a plateau production capacity of 250 million cubic feet per day. Photo: courtesy of Centrica plc.
