Cygnus
First production: 2016
Ithaca Equity: 85%
The Cygnus field is the single largest producing gas field in the UK, making the fields production a key contributor to UK energy security. The field is located in the Southern North Sea in blocks 44/11a and 44/12a in water depths in the range of 15 to 25 meters.
The Cygnus infrastructure consists of three bridge-linked Alpha platforms, including a wellhead drilling centre (AWHP), a processing/utilities unit (APU) and the living quarters/central control room (AQU).
Cygnus Bravo, an unmanned satellite platform, is approximately seven kilometres northwest of Cygnus Alpha.
Cygnus connects via the Esmond Transmission System (ETS) pipeline to the Perenco operated terminal at Bacton. Cygnus gas is blended with a high Wobbe Index gas in Bacton to achieve National Grid entry specification.
First gas from Cygnus was achieved in 2016 from Cygnus Alpha and in 2017 from Cygnus Bravo. Ithaca is actively progressing a field development programme focused on sustaining production and unlocking additional value. Two new development wells were brought onstream in 2023, and a new drilling campaign initiated in 2025 has delivered one new well to date, with three further wells planned for delivery between 2026 and 2027. Gas compression was introduced in 2022, and engineering work is underway to add a second stage of compression to the Cygnus facilities. Additional development opportunities are actively being progressed to support the long‑term performance of the field.
Partners
Spirit Energy (15%)
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