Offshore Update 9th January 2018

+44 (0)1502 307 037 info@4coffshore.com

HAPPENING ELSEWHERE

FUNHAI (TW01) The Environmental Protection Department has declined the EIA on the grounds that project is too close to White Dolphin habitat. 3rd Jan 2018

NISSUM BREDNING (DK44) The final turbine was successfully installed. Cable installation is ongoing with power production expected by the end of January. 5th Jan 2018

BORSSELE 3&4 (UK63) Partners Group acquired a 45% stake in the project with Shell now on 20%, Mitsubishi 15% and Eneco and Van Oord with 10% each. 8th Jan 2018

WALNEY EXT. (UK63) Remedial work to the WOWO4 Export Cable at the Landfall position off Middleton Sands is due to take place third week in January. 15th Jan 2018

KRIEGERS FLAK (DK37) The first gravity based foundation for the substations will be installed by the end of January. 31st Jan 2018

AQUA VENTUS (US3Z) MAV plans to conduct a geophysical survey of the cable route in Feb-March 2018 to verify the total amount of burial possible. Feb 2018

LAST MONOPILE INSTALLED AT HORNS REV 3

The last of the 49 monopiles for the 406.7MW Horns Rev

3 offshore wind farm have been installed off the Danish

coast in the North Sea. Installation kicked off at the begin-

ning of October and was completed by DEME Group sub-

sidiary GeoSea using the DP2 Innovation jack-up vessel.

The 40-50m long steel monopiles each have a diameter of

6.5m and weigh up to 610 tons. Towards the end of spring

work will begin to install the transition pieces followed by

the 49 V164-8.0 MW wind turbines which stand at 187m

tall. Commissioning is expected in 2020. The DP2 Innova-

tion is now in Vlissingen ahead of mobilisation for installa-

tion of the foundations at the 1.2GW Hornsea One pro-

ject. EEW delivered the first monopiles for the project in

December which will support the 174 Siemens' SWT-7.0-

154 turbines.

(Foundations for Kriegers Flak: Jan De Nul) Click on a project name, turbine, vessel or map to find out more on the 4C Offshore website

LOOKING FORWARD

SEATWIRL GRANTED PATENT

SeaTwirl has been granted a patent in the USA for a solu-

tion to store kinetic energy in a sort of fly wheel that can

be used to optimise the rotational speed of the turbine.

The company hopes that their solution will overcome

issues of voltage fluctuations caused by wind speed varia-

tions. It works by moving mass to or from the centre of

rotation. By moving mass towards the centre, the output

power can be maintained with less wind and thus be

optimised to reduce fluctuations on the electricity grid.

SeaTwirl are designers of floating wind turbines with a

vertical axis. Their 30KW S1 design was deployed off the

coast of Sweden in 2015 and they are currently develop-

ing a full-scale, 1-MW, S2 unit, due to be released in 2020.

According to SeaTwirl, its designs are more cost effective

and will lead to lower service and maintenance costs.

SWEDISH WINDFARM UNDER REVIEW

According sources at E.on, the consent application for the

Södra Midsjöbanken wind farm is currently under review

by the Swedish Environmental Court and a decision is

expected during the first half of 2018. Last month the

Swedish Fisheries PO, expressed concerns that the project

would adversely affect local fishing activities and last week

the Environmental Protection Agency commented that

the proposed site could impact an important conservation

areas for birds, algae and molluscs. Towards the end of

2017, E.on submitted project changes for approval and

the Ministry of Environment and Energy has contacted

stakeholders to provide opinions on them. E.on have said

that the construction start date will be dependent on the

consent outcome and the overall Swedish energy system.

They have given an estimate of commissioning by 2025.

MEPA ASSESSING VINEYARD WIND PROPOSALS

The Massachusetts Environmental Policy Act (MEPA)

Office has begun an environmental review of the Vineyard

Wind transmission system. The review is an important

step forward for Vineyard Wind’s proposed offshore wind

farm. Construction is slated to begin in 2019 and it could

be the first large-scale offshore wind farm in the USA. The

proposed transmission link to connect the wind farm to

the grid would be comprised of subsea and subsurface

electrical transmission lines and a new substation. The

Environmental Notification Form (ENF) and permit appli-

cation were filed on 15th December 2017. Federal, state

and local regulatory reviews will also be undertaken by

agencies including the Conservation Commission, the MA

Secretary of Energy and Environmental Affairs and BOEM.

CHANGEOVER AT BEATRICE

Seaway Heavy Lifting’s Stanislav Yudin has taken over

jacket installation at the Beatrice offshore wind farm this

week as construction makes steady progress. SHL’s Oleg

Strashnov had been filling in for Stanislav Yudin and in

total has installed 34 jackets. The jackets are delivered to

site by cargo barge, the heavy lift vessel then lowers the

jacket onto seabed piles followed by grouting. Oleg Strash-

nov will return again to complete the second phase of

foundation installation in May-August 2018. Turbine in-

stallation is due to follow from July 2018 to March 2019.

In total the project will feature 84 Siemens Gamesa SWT-

7.0-154 turbines and is expected to capable of generating

enough electricity to power approximately 450,000

homes. The park is due to be fully operational, following

trial operations and testing, by October 2019.

RENTEL SUBSTATION READY FOR SAIL-OUT

The offshore substation for the 309MW Rentel offshore

wind farm is complete and has been loaded aboard a

transportation barge due to depart this Friday (12th Janu-

ary). The substation was constructed by STX France at its

facility in Saint-Nazaire as part of a contract signed in April

2016. Load out of the substation took three hours on 4th

January and substation installation is scheduled for spring

2018. STX France's contract also included the fabrication

of the substation foundation which was installed by Ge-

oSea’s DP2 Innovation last year. The foundation consists

of a 1,050t monopile, a 240t J-tube cage and 750t transi-

tion piece. First power is expected to be generated mid-

2018 and the array is anticipated to meet the energy

demands of 288,000 households annually.