Vattenfall Champions HVDC Norfolk Offshore Wind Setup
Swedish energy group Vattenfall plans to deploy High Voltage Direct Current (HVDC) cable technology to connect the 1.8GW Norfolk Vanguard and its sister project, the 1.8GW Norfolk Boreas, to the UK’s National Grid.
The wind farm developer says that it has made a strategic decision to back HVDC on the Norfolk projects for two reasons. Firstly, Vattenfall believes it will be cost competitive with High Voltage Alternating Current (HVAC) technology due largely to lower losses of transmitted electricity, fewer cables connecting the wind farms to the grid and innovation leading to lower cost on and offshore substations and associated equipment.
Secondly, compared to HVAC connecting big, distant from shore wind farms to national grids, HVDC will have less of an impact on the environment and local people where onshore infrastructure is located, Vattenfall said.
Vattenfall also intends to strengthen its partnerships with HVDC cable and component manufacturers as well as platform manufacturers and civil construction companies.
“Vattenfall wants to be a leader in maturing HVDC technology to connect its large-scale, far offshore wind farms – like Norfolk Vanguard and Norfolk Boreas – to national grids,” Gunnar Groebler, Vattenfall’s Head of Business Area Wind, said.
”In taking that lead, we will work with HVDC technology suppliers to deliver cost competitiveness for big offshore wind farm projects. Importantly, it also means that our decision to deploy HVDC for projects like Norfolk Vanguard and Norfolk Boreas is kinder to the environment and local people.”
Vattenfall will submit final plans for Norfolk Vanguard to the Planning Inspectorate in June 2018.
The wind farm is expected to receive a consent decision from the UK Government at the end of 2019 and if permitted will be up and running by the middle of the 2020s. Norfolk Boreas is following behind in the planning process.
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