Looking for a specific product?

Make a search for products & suppliers, articles & news.

Mainland power to Gjøa platform

Statoil has flipped the mains switch, making Gjøa Norway’s first floating platform to get electricity from the mainland, through a 100km cable from Mongstad north of Bergen.

Statoil had considered supplying the platform with electricity from the mainland, right from the start of the Gjøa project. And the world’s longest alternating current cable to be installed in one piece and with such high voltage is now a reality.

The electricity comes from Statoil’s Mongstad facility, north of Bergen, which provides very good security of supply for Gjøa.

“This is a good example of how Statoil can play a part in solving some of the climate challenges in collaboration with the supplies industry,” says Bjørn Midttun, head of subsea installations, pipelines and marine operations on the Gjøa field.

Statoil had considered supplying the platform with electricity from the mainland, right from the start of the Gjøa project. And the world’s longest alternating current cable to be installed in one piece and with such high voltage is now a reality.

The electricity comes from Statoil’s Mongstad facility, north of Bergen, which provides very good security of supply for Gjøa.

Protecting the environment from CO2 emissions
Present calculations show that Statoil will avoid 210,000 tonnes of carbon dioxide (CO2) emissions per year by providing the Gjøa platform with power from shore. This is the equivalent of the annual emissions by about 100,000 cars. The alternative would have been a traditional solution using gas turbines on the platform as electricity generators.

Statoil and the contractor ABB have worked together for several years to develop a technology which makes it possible to replace the gas turbines on board a floating platform with a power cable from land.

New technology
The platform will require a maximum of 40 megawatts of electricity from land. The 90,000-volt cable is 100 kilometres long. It comprises a static and a flexible part. Running between the seabed and the floating platform, the flexible part of the cable has been the biggest challenge. The necessary technology did not exist before and had to be developed through the Gjøa project.

“Developing and adopting new technology is our most important measure for reducing the environmental impact of our operations,” notes Midttun.

Statoil has been the operator for Gjøa in the development phase. In the fourth quarter of 2010 GdF Suez takes over the production phase as its first operatorship for a field on the Norwegian continental shelf (NCS).

 

Associated companies:


Related news

Latest news

PRESS RELEASE: Servogear to propel Asian built windfarm vessels

The contract with Cheoy Lee Shipyards was signed in Q2 2018.

SERVICEBULLETIN: Grease filling of the propeller system

SERVICEBULLETIN 180921: Grease filling of the propeller system

FILM: The world´s first HD220 gearbox returns for an overhauling

The gearbox has been operating flawlessly for more than 20.000 hours...

Øveraasen delivers machine number 66 to New York

Totally over the last ten years, 

DNV GL commission worlds largest industrial explosion chamber at Spadeadam Research and Testing

The chamber supports not only a joint industry project ...

DNV GL celebrates double win at Lloyd’s List Asia Pacific Awards

We would like to thank all of the judges and Lloyd’s List for these awards,

WITH OR WITHOUT SKIRTINGS?

A theme that often comes back to me while working with new customers is the flooring,

Heating cable segment officially transferred to ØS Varme

Øglænd System AS’s future strategy will be focused on the sale...

Genesis is celebrating its 30th anniversary

TechnipFMC’s market-leading engineering and advisory company,