Equinor (EQNR) said Tuesday the Eirin field has begun production, exporting gas to Europe via the Gina Krog platform and Sleipner A platform.

The company said the subsea project, developed on a fast timeline, is expected to deliver about 27.6 million barrels of oil equivalent, mostly gas.

The development cost about 4.5 billion Norwegian Krone ($485.7 million) and is expected to extend the life of the Gina Krog field to 2036, the company said.

Equinor said the project uses existing infrastructure and electrification, resulting in relatively low emissions of around 3 kg of CO2 per barrel produced.