14th October 2020

Will LamondMott MacDonald

Offshore Wind TurbinesAn Overview and Future Trends

Mott MacDonald Limited

Senior Wind Energy Consultant for Mott MacDonald based in Glasgow, Scotland. Nine years experience as a Project Manager for a variety of offshore wind assignments for lenders, owners and acquirers in the UK, Europe, USA, and the East Asia region.

Key LTA projects as Project Manager include the first financed US offshore wind farm (Block Island - 2015) and the first financed French offshore wind farm (St Nazaire - 2019).Will Lamond

Senior Wind Energy Consultant

We are a global engineering,

management and development

consultancy focused on guiding

our clients through many

of the planet’s most

intricate challenges.

Introducing Mott MacDonald

Opening opportunities with

connected thinking

• EUR1.6 billion turnover

• Multidisciplinary

• Multisector

• Over 17,000 staff

• Global presence

• Employee owned

Who we are

Cape Town

Tokyo

Bangkok

Brighton

New Delhi

Melbourne

Taipei

Glasgow

Paris

Bogota

Madrid

Mott MacDonald’s wind offices

Houston

Boston

Singapore

Genova

Brisbane

Denver

Offshore wind global businessKey highlights

1/2of global installed offshore

wind capacity advised

90GW of wind globally

250staff working in offshore

wind

2004Establishment of wind

services

Offshore wind business in AsiaKey highlights

2010Year of setting up in Japan

20Involved in over 20 offshore

wind projects in East Asia

1993Year of setting up in Taiwan

35staff working on offshore

wind based in Asia

• 1st Project Financed Deal in the world – Princess Amalia – Q7 project

• 1st Project Financed deal in Taiwan – Swancor Formosa 1 – Phase 1

• 1st Project Financed Deal in Belgium – Thornton Bank

• 1st Project Financed deal in the USA – Block Island wind farm

• 1st Project Financed Deal in France – Saint-Nazaire wind farm

• Owner’s Engineer for 143 MW project – Akita Offshore Wind, Japan

• TA / OE for 187 MW project – Kashima Offshore Wind , Japan

• OE for a demonstrator project in the US – Fishermen’s Energy NJ, USA

7

90GWEngineering and

technical advisory

services for over

90GW of wind

energy projects

worldwide

Mott MacDonald Offshore Wind

History highlights

Environmental & Social Impact Studies

Key services

Energy Yield Analysis Metocean Studies

Tendering & Procurement Advice

Agreements & Contract Review

Package, Project & Program Management

Detailed Design

Feasibility & Technical

StudiesTechnology Assessment

Electrical Engineering

WTG & OSP Foundations Optioneering

Seismic Studies and FEED Design

Geophysical and Geotechnical Studies

Subsea Cable Routing Design

Construction & Operation Monitoring

1Offshore Wind

Turbine

Technologies

2Installation

Considerations

3Asset Life

Extension

In this presentation

Offshore Wind Turbines – An Overview and Future Trends

10Mott MacDonald | Presentation

Wind Turbine Technologies – Hybrid Arrangement

Hybrid concept where gearbox is used to increase

rotation to a moderate speed (circa 600 rpm) which can

then drive a smaller Permanent Magnet Generator

(PMG) than in the direct drive concept

Advantages

• Lower ratio gearbox than DFIG/SCIG

potentially increasing reliability

• Greater part-load efficiency than

DFIG/SCIG due to permanent magnets

• More compact than a full direct PMSG

Disadvantages

• More mechanically complex than direct

drive due to gearbox

• High cost of generator compared to

DFIG/SCIG

Source: MHI Vestas

11Mott MacDonald | Presentation

Wind Turbine Technologies – Direct Drive

Advantages

• No gearbox which reduces the number of

mechanical moving parts historically

prone to failure

• Better grid support/fault ride-through due

to use of full scale converters (power

electronics)

Disadvantages

• Cost, volatility and supply chain

constraints of Permanent Magnet (PM)

material supply

• PM may demagnetise due to extreme

temperatures or short-circuit loadingSource: Siemens Gamesa

12Mott MacDonald | Presentation

Wind Turbine Technologies – Key Global Players

MHI Vestas

• V164-10.0MW

• V174-9.5MW

• Rumours of new, higher rated platform with

larger rotor diameter. No official statements.

SGRE –

• SG 8.0-167

• SG 11-200

• SG 14-220

GE Renewable Energy –

• Haliade X 12.0-220

• Not officially confirmed but 13MW variant

expected

13Mott MacDonald | Presentation

Wind Turbine Technologies – Capacity Evolution

V164/V174 – originally as

6.0MW, now offered at

9.5MW/10MW

SWT-154 – originally 6.0MW,

now as 8.0MW with 167m

rotor

Reasonable to assume

latest WTG platforms (i.e.

SGRE 14-220) will evolve to

higher rated capacity

Source: IRENA Future of Wind 2019

14Mott MacDonald | Presentation

Installation Considerations – current vessel capability

Current vessel statistics

• 900 to 1,400 ton lifting capacity

• 5,000 to 8,500 ton load capacity

• Suitable for current commercial

9.0/10.0MW WTGs

Standard installation methodology:

• Tower erected onshore, installed offshore

in one lift

• Nacelle in one lift, blades in separate lifts

Source: Van Oord

15Mott MacDonald | Presentation

Installation Considerations – future vessels

Source: Jan de Nul

Expected future vessel requirements

• 2,500 to 3,000 ton lifting capacity

• Up to 16,000 ton load capacity

• Designed for 15MW+ WTGs

Publicly announced vessels

• Jan de Nul “Valiant” – 3,000 ton lifting

capacity. Expected in 2022.

• CSBC and DEME “Green Jade” for Taiwan

– 4,000 ton lifting capacity. Expected in

2022.

• NYK and Van Ord announce Japanese

JUV. Expected in 2022/3

• Shimizu announced Japanese JUV.

Expected 2022.

16Mott MacDonald | Presentation

Asset Life Extension

Certified WTG design life currently 25 years

Recent EU transactions see push for 30-35 years

operational life

Key considerations:

• Fatigue life of WTG structural elements:

• Tower

• Nacelle bedframe

• Yaw interface

• Rotor hub

• Long term monitoring campaign coupled with

structural load modelling

• Increased O&M cost profile

• Replaceable components

• Increased inspections and monitoring

• Run to fail in later years – impact on revenue

Thank you

We are excited about the potential for

offshore wind in Taiwan and look forward

to talking with you.

Taiwan Mott MacDonald Limited

5F-1, No.306 Sec.4

Xinyi Road, Daan District

Taipei City 10679

Taiwan

E Jim.Chen@mottmac.com

T +886 (0)2 8978 8978

W mottmac.com