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Vattenfall plans hydrogen pilot at Aberdeen wind farm

By: Tom Russell 07/01/2022 Vattenfall

General Windfarms

Vattenfall is planning a pilot hydrogen production project at its European Offshore Wind Deployment Centre (EOWDC), off the coast of Aberdeen.
According to its EIA Screening Opinion Request Report submitted in November, the HT1 Hydrogen demonstration project will utilise electrical power generated from the existing Wind Turbine Generator (WTG) B06 to produce hydrogen which will be transferred to shore via an 8” maximum internal diameter flexible flowline.

Seawater will be abstracted from the immediate vicinity of the WTG and desalinated. The desalinated water will then be electrolysed using electricity from the WTG to produce hydrogen and oxygen. The oxygen will be released to the atmosphere and the hydrogen transported to shore by a buried flowline. Wastewater from the seawater abstraction and desalination process will be discharged back to the sea via a discharge pipe in the water column in the vicinity of WTG B06. Additional abstraction and discharge infrastructure may be required for cooling purposes.

The hydrogen equipment installed on the turbine will comprise the electrolyser, desalination equipment and compressors. These will be housed in separate 40 ft (12.19 m) shipping containers with additional cooling where required. The platform to support this new infrastructure will be installed on the transition piece of the turbine, extending the current platform to provide sufficient area.

The platform will consist of up to seven, 40 ft containers, of steel (80 tons) and concrete for the containerised modules, plus equipment (150 tons).

After achieving landfall, the hydrogen will be received, processed and stored at an onshore facility, ready for offtake. Vattenfall noted that various opportunities for offtake, including transportation, industrial uses and marine operations are currently being considered.

The EOWDC has been generating electricity since summer 2018, and is expected to continue operating until 2043. It features two 8.8 MW and nine 8.4 MW turbines, all supplied by MHI Vestas. According to Vattenfall, one single rotor lap from the record 8.8 MW turbine provides a British household with electricity for a full day.

The £300 million+ project is a test-bed for new technology in the offshore wind sector. The new components and techniques deployed at the Centre will support the development of a low-cost industry that will form the backbone of the transition to a net zero carbon economy. As one of Scotland’s largest offshore test and demonstration facilities, the 92.4 MW EOWDC, will trial next-generation technology, and aims to generate the equivalent of 70% of Aberdeen's domestic electricity demand.

For more information on innovative technologies and contract announcements in offshore wind, click here.

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Vattenfall plans hydrogen pilot at Aberdeen wind farm

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