Dogger Bank is a joint venture between SSE Renewables (40%), Equinor (40%) and Eni (20%)* and is being built in three equal phases of 1.2 GW, Dogger Bank A, B and C.
* Eni already has 20% stake in Dogger Bank A and B. Its 20% stake in Dogger Bank C is expected to close in Q1 2022.
The world’s first floating wind farm, the 30 MW Hywind Scotland pilot park, has been in operation since 2017, demonstrating the feasibility of floating wind farms that could be ten times larger.
Equinor and partner Masdar invested NOK 2 billion to realise Hywind Scotland, achieving a 60—70% cost reduction compared with the Hywind Demo project in Norway. Hywind Scotland started producing electricity in October 2017.
Each year since Hywind Scotland started production the floating wind farm has achieved the highest average capacity factor of all UK offshore windfarms, proving the potential of floating offshore wind farms.
Facts about Hywind Scotland
- The world’s first floating offshore wind farm, with 5 turbines
- Pilot park covering around 4 square kilometres
- Installed capacity: 30 MW
- Diameter 154 m
- Maximum height, base to turbine: 253 m
- Water depth: 95-120 m
- Spar-type substructure
- Standard offshore wind turbine
- Powering ~20,000 UK homes
- Export cable length: Ca. 30 km
- Average wave height: 1.8 m
Suitable for harsh conditions, simple 3-line mooring system, patented motion control reduces fatigue, increases production
“Much of the knowledge we have acquired over the course of almost fifty years of oil production can be used in our wind power projects.”
Stine Myhre Selås, structural engineer in Equinor
As the only floating offshore wind farm with years of operational experience, Equinor has collaborated with others to gather data from the unique asset, and trial new methods to understand more around how floating offshore wind interacts with the environment and other marine stakeholders:
- Together with leading research centre NORCE Research, we’re testing a new method analysing environmental DNA to map effects from floating wind on fish that inhabit the waters.
- We are pioneering a novel method of data collection for offshore wind, using an autonomous Sailbuoy, to map fish presence and biomass quantity. The method is both more sustainable and less disturbing to the marine environment.
- Equinor and Marine Scotland are collaborating to trial safe fishing methods within floating offshore wind farms in order to explore ways of coexisting in the marine environment.