OHT nets Dogger Bank foundation agreement


OHT has secured a preferred supplier agreement for foundation installation at the Dogger Bank offshore wind zone off the coast of the UK. Under the agreement, OHT’s new build heavy installation crane vessel Alfa Lift will carry out the transport and installation of monopile foundations and transition pieces for the Doggerbank Creyke Beck A and Doggerbank Creyke Beck B offshore wind farms.

Utilising a single vessel, the foundations will be transported to the offshore site, approximately 130km off the north-east coast of England, and installed in water depths of up to 35 metres. The Alfa Lift will carry 10 monopiles and transition pieces on deck per voyage. Transport and installation of monopiles and transition pieces is expected to be performed between 2022 and 2024.

“We are humbled and honoured to be selected as the preferred supplier for this momentous project, bringing the world’s largest and most capable offshore wind installation vessel to the world’s largest windfarm, to support the world’s most powerful turbines”,
said Torgeir E. Ramstad, CEO OHT.

Paul Cooley, SSE Renewables Director of Capital Projects, said: “Dogger Bank Wind Farms is paving the way for future offshore wind developments, not just in the UK but globally, by utilising some of the most innovative and efficient technology on the market, like the Alfa Lift vessel, and we are very pleased to have OHT working with us as we deliver this ground-breaking project.”

Halfdan Brustad, Vice President for Dogger Bank at Equinor, said: “We are pleased to have OHT as our contractor for monopile installation. By bringing new, innovative and efficient vessels into the market, like the Alfa Lift vessel, we are helping to revolutionize the offshore wind industry. We need new entrants that can think differently and make the industry even more competitive. We look forward to working with OHT to make Dogger Bank a success.”

OHT’s Alfa Lift, of Ulstein design, will arrive to market in 2021. The custom-built offshore wind foundation installation vessel, featuring a 3,000-tonne and more than 12,300 square metres of available deck space. The main deck will incorporate an automated skidding system, whilst the forecastle deck will carry transition pieces and mission equipment. The vessel has a capacity to carry a total payload of up to 51,250 tonnes.

Creyke Beck A and Creyke Beck B projects will have a combined capacity of 2.4 GW and are located more than 130 km off the east coast of the UK in the North Sea. The projects are expected to produce enough energy to power the equivalent of 3 million UK homes. The project developers, SE Renewables and Equinor, estimate that a final investment decision for the first project could be reached in 2020, with first power generation following in 2023.Creyke Beck A and Creyke Beck B secured latest Contracts for Difference is the UK government's latest (September 2019) auction with a strike price of £39.65/MWh and £41.61/MWh respectively.

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