JFMS helps ready Deep Green tidal device for energy production.

James Fisher Marine Services (JFMS) completes project scopes for marine energy developer Minesto on the first low-velocity tidal energy project in the world which, once fully deployed, could produce thousands of Welsh homes with predictable, clean electricity.

JFMS supported the installation of the developer’s 500kW-rated DG500 device at its site in Holyhead Deep, off Anglesey in north Wales, which is the starting point for the commercialisation of Minesto’s unique marine technology.

David Collier, chief operating officer (COO) at Minesto, said:

“We were delighted with the support we received from James Fisher Marine Services at our Holyhead Deep site. It was great to be able to draw on the company’s resources to resolve complex technical and logistical problems with simple solutions, learned through experience.”

This is the first utility-scale device to be installed by Minesto following several years of testing prototypes – and the first of a planned 10MW array in Holyhead Deep. With all the components and systems needed for power delivery now in place to start energy production.

JFMS was selected due to its experience working in conditions of high tidal flow, albeit the Deep Green site is in deeper water (around 80m) than usual for installation of tidal energy devices.

JFMS joined the project team onshore in Holyhead, where preparations were made to install an innovative and unique tidal turbine substructure, including a ballast-able gravity base and subsea cabling. Operations were performed from the MV Island Vanguard, an Anchor Handing Tug Supply Vessel (AHTS) and the MV C-Fenna.

Minesto_DG500_commissioning-1_WEB.jpgMinesto’s marine energy converter DG500 during its commissioning program in the Holyhead Deep, Wales. Photo credit: Minesto

The second phase included the installation of a micro grid system (MGS) buoy – which receives the electricity generated and analyses power output and performance – and connects to the DG500 device via an umbilical tether and gravity base.

Paul Scullion, managing director of James Fisher Marine Services project division, said:

“We have some very talented engineers, consultants and technicians at JFMS and it was a pleasure to be able to support Minesto as its project draws closer to full commercialisation. We have had involvement in almost all of the UK’s commercial tidal array projects and are particularly excited about the potential it offers as a source of clean energy.”

JFMS provided a number of specialists including a subsea operations manager, DP supervisor, heavy lift experts, project engineers and riggers. This is the latest in a line of high-profile developments supported by JFMS, including those for SEM-REV and the technically complex Sabella tidal device project earlier this year.