DEME’s experiences and developments

within the tidal and floating wind sector

ELBE Seminar

26/02/2019

Jan Goormachtigh

DEME Blue Energy/DEME Offshore

Tidal Stream

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Status of the tidal industry | examples small technologies (< 1 MW)

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► 3 x 100 kW array in operation (Shetlands, UK).

► Plans to increase to 600 kW by 2021

► Focusing on building up to FORCE site deployment (Canada)

► Plans to install up to 1.7 MW platform by 2020

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Status of the tidal industry | examples large Technologies (> 1 MW)

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► 1.7 MW device > 12 GWh generated at MeyGen

► New 2 MW device to be deployed 2019

► 2 MW device > 3 GWh generated at EMEC, Scotland

► New 2 MW device O2 to be deployed 2020

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MeyGen 1A

► 6 MW – 4 tidal energy converters

► Foundation type = gravity based

► 4x export cables already installed in 2015

► 4x TSS + 24x BB installed in October 2016

► 2x TTG installed end of 2016, 2x TGG installed beginning of 2017

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TTG

TSS

BBTTG

Tidal Turbine Generator (~200T)

TSS

Turbine Support Structure (250-300T)

BB

Ballast Block (200T)

Totals LxBxH = 25x20x25m W ≈1700T

DEME

scope

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Installation Vessel Selection | Sea Trials Jack-Up Vessels

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JUP Goliath

Positioning and Jackingat Raz Blanchard, France

September 2015

DP2 Positioning, Jacking and Lifting at MeyGen site, Scotland

September 2016

JUV Neptune

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Load-out | at Nigg Energy Park

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Transportation | Sailing from Nigg to MeyGen site

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85 NM

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TSS Installation

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Out-Survey | TSS positioned on rock seabed

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TSS Installation | Retrieving of rigging system

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Ballast Block Installation

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Sea Trials Jack-Up Vessels

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BB Installation | Accurate positioning of BB on TSS leg

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Lessons Learnt

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► JUV Neptune performance in high current area

› DP2 Positioning + Jacking successful

› Accurate lifting operations due to very stable platform

► Working in high current areas requires

› 24/7 minute-by-minute schedule and follow-up on actual current velocities

› Skilled & trained vessel crew (incl. lifting operators)

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Tidal Stream | Areas of Interest

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Europe

► Scotland

► Ireland

► Wales

► France

World

► Canada

► Indonesia

► South-Korea

► Japan

Conclusion: Tidal industry gaining global momentum!

Floating Wind

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Floating Offshore Wind Market

► Floating deployment is forecasted to reach 5 GW by 2030

► Strategic support is required for floating technology to become cost competitive

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0

40

80

120

0

4

8

12

2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030

Cum

ula

tive c

ap

acity

(G

W)

Floating Seabed-fixed Floating cumulative Seabed-fixed cumulative

An

nual i

nsta

lled

capacity

(G

W)

Source: BVG Associates

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Floating Offshore Wind Market

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► Europe Support based on economic activity or unlocking deployment in specific regions. France is most likely country to support commercial-scale deployment

► Asia Early commercial scale deployment is expected to first occur in Japan / Taiwan

► North America The US west coast and Hawaii have large deepwater resources but commercial scale deployment will be dependent on LCOE improvement

0

1

2

3

4

5

0.0

0.2

0.4

0.6

0.8

1.0

2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030

Cum

ula

tive c

ap

acity

(G

W)

Rest of World annual Europe annual Rest of World cumulative Europe cumulative

An

nual i

nsta

lled

capacity

(G

W)

Source: BVG Associates

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DEME Offshore | Scope of Work

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► DIMCO

› Fabrication of concrete floater / gravity anchor

► GeoSea

› Installation of gravity anchors

› Installation floater or foundations

› Installation of wind turbine generators

► Tideway

› Installation of suction or drag anchors

› Subsea hookup of mooring and foundation

› Installation of interarray cables

› Installation of scour protection and ballast

► GeoSea Maintenance

› Major Component Exchange WTG

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GeoSea | Meet the fleet

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Installation Challenges

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Installation Challenges

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► Specific challenges

› FoundationMotion compensated pile gripper

› Turbine installationBoom lock 3.0

› Blade installation / replacementSlide along the tower segment?

► In general

› Collaboration with WTG (and interface) manufacturers required

This presentation contains proprietary and/or confidential information.

Any disclosure, copying, distribution or use of this information/the ideas incorporated is

strictly prohibited. This information is not to be considered as a representation of any kind.

Any intellectual and industrial property rights and any copyrights with regard to this

presentation, and the information therein, shall remain the sole property of DEME.