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Tokyo Electric Power Incorporated : TEPCO Renewable PowerTetraSpar Demonstrator, the world's first fully industrialized floating offshore foundation, is now commissioned and in operation

12/01/2021 | 02:21am

December 1, 2021

TEPCO Renewable Power, Inc.

  • The floating wind foundation TetraSpar Demonstrator owned by Shell, TEPCO RP, RWE and Stiesdal has been successfully connected to Norway's grid
  • The floating foundation was towed from Denmark to Norway in July. It has now been fully commissioned and is producing power in automatic, unattended operation
  • Concept offers leaner manufacturing, assembly, and installa-tion process with lower material costs

The pioneering floating wind project, TetraSpar Demonstrator, is commissioned and in operation, anchored in place at 200 m water depth off Norway's coast. The project will now enter its test phase where data on the performance and characteristics of the TetraSpar floating foundation will be cap-tured and analyzed to pave the way for commercial-scale floating wind projects.

Earlier this summer, the TetraSpar Demonstrator reached its destination at the METCentre test site after a tow of 360 nautical miles from the port of assembly in Grenaa, Denmark.

The commissioning of the 3.6 MW Siemens turbine is the last in a string of milestones for the TetraSpar Demonstrator:

  • Completion of the factory manufacturing of the components for the world's first industrially manufactured floating offshore foundation
  • Fast assembly of the modules at the quayside, requiring no welding and no special port facil-ities
  • Launch using a semisubmersible barge, followed by rapid turbine installation using an ordi-nary onshore crane
  • Safe deployment of the keel when towed to location of sufficient depth, making the Tet-raSpar Demonstrator the world's first spar foundation capable of deployment from an ordi-nary, shallow-water port

The demonstration project has shown that Stiesdal's 'Tetra' concept remains on target to offer im-portant advantages over existing floating wind concepts, with the potential for leaner manufacturing, assembly, and installation processes, and with lower material costs.

Henrik Stiesdal, Chairman of the board of directors of TetraSpar Demonstrator ApS, said:
"This is a huge milestone for the project. First and foremost, we are happy to have completed all phases of the project without any significant safety incidents, even though we have deployed a very innovative project with a range of world's first elements. The deep experience of our project part-ners has been invaluable in this regard. Next, we are obviously very pleased that the new technolo-gies, a few years ago only ambitions and design proposals, have now come to fruition. All indica-tions are that our key target, to accelerate the industrialization of floating offshore wind, can actually be met, not only at prototype level but at large scale."

Thomas Brostrom, Senior Vice President Renewables at Shell said:
"We are extremely proud to have reached this important milestone and to have contributed to the realization of a truly innovative floating concept. Shell is committed to further develop the floating wind industry globally by providing technical and financial support to promising concepts such as Tetraspar. Ultimately, we hope to deploy floating wind technology globally and at large scale to en-able further decarbonization of our customers' activities and for society as a whole."

Seiichi Fubasami, President of TEPCO RP, said:
"There are high expectations throughout the world for floating offshore wind farms. One of the most challenging endeavors underway is the TetraSpar floating foundation demonstration project. Each stage in the process, from manufacturing and assembly, to launch and deployment, has done well, and we are very excited now to have the demonstrator in operation, thereby reaching an important milestone towards commercial operation of the TetraSpar.
In Japan we expect more floating offshore wind farms to be built from 2030 and onward as we aim for realization of carbon neutrality in 2050. The TetraSpar concept can be utilized in Japan's natural conditions and enables the easy construction of regional supply chains thereby playing an important role as we aim to transition to renewable energies as baseload power sources.
This is a promising new technology for the future and we expect the TetraSpar floater to perform well during operation off the coast of Norway over the next couple of years."

Sven Utermöhlen, CEO Offshore Wind of RWE Renewables, underlined:
"This project has been both challenging and inspiring. The spark of genius with the TetraSpar con-cept is its industrialized manufacturing and assembly methodology, which we think is crucial for long-term cost reduction. Our deep involvement in this project means we have now gathered first-hand evidence about how this approach can be scaled up to commercial projects.
This project has taught us more crucial lessons than we could have ever expected, and it has been great to work so collaboratively with our project partners to safely deliver such an innovative tech-nology. It has been particularly interesting to see how important it is to transfer RWE's experience in seabed-fixed offshore wind into our floating projects. This project's success motivates us to keep on delivering cutting edge innovation."

The upcoming test phase will provide the four partnering companies with important knowledge and opportunities to further refine the TetraSpar technology. The partners will make full use of the re-sults obtained to expand the possibilities of offshore wind power and thereby contribute to the realization of a clean and sustainable carbon-neutral society.

Disclaimer

TEPCO - Tokyo Electric Power Company Holdings Inc. published this content on 01 December 2021 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 01 December 2021 07:20:07 UTC.

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