Arven unites Mainstream and Ocean Winds

Arven Offshore Wind Farm, is the subject of a seabed lease agreement between Mainstream Renewable and Ocean Winds.

Share:

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access • Archives included • Professional invoice

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

Arven Offshore Wind Farm, is the subject of a seabed lease agreement between Mainstream Renewable and Ocean Winds. Both companies are licensed by the Crown Estate Scotland.

A partnership for Scotland

Arven Offshore Wind Farm will require the two bidding companies to pay £36 million for the seabed lease. Indeed, the Crown Estate Scotland wishes to develop this floating offshore wind farm. It is located off the Shetland Islands in Scotland and will have a capacity of 1.8GW.

Mainstream and Ocean Winds each own 50% of the project. Thus, the two companies want to develop the floating offshore wind on an industrial scale by creating local jobs. Arven Offshore Wind Farm will meet the needs of two million households and will save, annually, three million tons of CO2.

Renewed cooperation

Sian Lloyd-Rees, UK National Director of Mainstream Renewable Power, says:

“We are excited to advance our plans for the Arven offshore wind farm and, building on Mainstream’s Scottish development experience and Aker Group’s decades of offshore heritage in the North. Sea, we are ready to play a leading role in the industrialization of floating offshore wind.”

Adam Morrison, UK Country Manager for Ocean Winds, says:

“Our team at Ocean Winds is delighted that we are further strengthening our position in Scotland with these new projects, which build on our delivery experience here in Scotland, as well as internationally.”

Moreover, the Arven project is not the first project where the two companies join together.

Indeed, Mainstream and Ocean Winds are part of the KF Wind joint venture in South Korea. Mainstream is also part of a consortium that will participate in the next round of floating wind turbine leasing in Utsira, Norway. Ocean Winds, on the other hand, was involved in the Moray East project, the largest offshore wind farm in Scotland.

Shell withdraws from two floating wind projects in Scotland, reinforcing capital discipline in favour of faster-return activities. ScottishPower takes over MarramWind while CampionWind is returned to Crown Estate Scotland for reallocation.
J-POWER will take over Mitsubishi Heavy Industries’ domestic onshore wind maintenance operations under a deal set to strengthen its local market position by spring 2026.
The consortium brings together Air Liquide, RTE, Nexans, ITP Interpipe and CentraleSupélec to develop a demonstrator for offshore electricity transport using superconducting cables cooled with liquid nitrogen.
Developer Q ENERGY has inaugurated a seventh wind farm in Biesles, Haute-Marne, with Velto Renewables acquiring a 50% ownership stake.
French start-up Wind fisher unveils a pioneering airborne wind system capable of producing twice as much electricity as a ground-based turbine by tapping into powerful winds above 300 metres.
The Canadian energy producer led the tenth wind tender launched by the CRE, with two projects representing 13% of the allocated capacity, strengthening its strategic position in the French market.
The European Commission has selected BW Ideol’s Fos3F project for a grant of up to €74mn, targeting the construction of a concrete floater plant for floating wind turbines at the industrial site of Fos-sur-Mer.
Canadian company Boralex reported a net loss of CAD30mn in the third quarter, impacted by lower electricity prices in France and adverse weather conditions in North America.
Energiekontor has closed financing for three new wind farms in Germany, strengthening its project portfolio and reaching a historic construction milestone in the 2025 fiscal year.
RWE has finalised installation of all 44 foundations at the Nordseecluster A offshore site in the North Sea, a key milestone before planned maintenance activities leading up to 2027 on this 660-megawatt project.
A pilot project backed by the state aims to modernise electricity transport between offshore wind farms and the mainland grid using superconducting cables cooled with liquid nitrogen.
The Danish wind turbine manufacturer doubled its net profit in the third quarter despite complex market conditions, supported by increased onshore deliveries and order growth.
Danish offshore wind giant Ørsted reported a net loss of 1.7 billion kroner in the third quarter, despite a $9.4 billion recapitalisation aimed at strengthening its balance sheet and stabilising operations.
Norway's energy regulator has rejected an application to build a wind farm in the northern Finnmark region due to potential environmental impacts and threats to Indigenous Sami culture.
Danish Ørsted has signed an agreement with Apollo to sell a 50% stake in its Hornsea 3 offshore wind farm in the UK, in a strategic transaction valued at approximately DKK 39 billion ($5.43bn).
Eneco takes over Prowind’s wind project development business in the Netherlands, adding 260 MW to its portfolio. Prowind refocuses on the German market, where demand is growing rapidly.
The Chinese wind turbine manufacturer and Saudi operator sign a seven-year framework agreement to deploy local production lines and enhance technological cooperation in several strategic markets.
Iberdrola has installed the high-voltage direct current converter station for its East Anglia THREE wind farm, marking a key milestone in a €5 billion project.
Driven by solid operational performance, Nordex has raised its 2025 EBITDA margin forecast to 7.5–8.5%, up from the previous 5–7%, following a significant improvement in preliminary third-quarter results.
Neoen’s Goyder South Wind Farm reaches full generation capacity, strengthening the French group’s presence in Australia’s energy market with 412 MW connected to the grid.

All the latest energy news, all the time

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access - Archives included - Pro invoice

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.