Shell and ScottishPower have become the latest ScotWind winners to announce they have signed option-to-lease agreements.
In striking the deal with Crown Estate Scotland, the pair have reserved the seabed rights for their MarramWind and CampionWind floating wind farms.
Destined to be among the first commercial-scale floating offshore wind farms anywhere in the world, the two developments will be able to power millions of homes.
MarramWind will be located off the north-east coast, while CampionWind will be off the east coast.
Shell previously revealed it has committed to use Scottish content to fulfil 40% of the two projects secured in ScotWind.
Charlie Jordan, ScottishPower’s offshore wind director for the UK and Ireland, said: “The signing of our ScotWind option agreements gives us the green light to push on with our ambitions to deliver jobs and investment for local people, businesses and the supply chain across the country – creating a new global industry from right here in Scotland.”
Hessel de Jong, Shell's general manager Europe for offshore wind, added: “Having signed option agreements with Crown Estate Scotland, a top priority is how the planning phase can be streamlined as much as possible to accelerate the delivery of 5GW of floating offshore wind power.”
The two energy companies previously pledged to invest a total of £75m into the Scottish supply chain.