The document summarizes the WindFloat project, which aims to demonstrate the viability of floating offshore wind power. The WindFloat technology uses a floating hull with ballast systems to remain stable in rough seas. The project's first phase involves a 2MW prototype installed off the coast of Portugal. Initial performance analysis shows the floating platform survived normal and extreme wave conditions. The results so far indicate floating offshore wind is a promising technology for harvesting wind resources in deep waters.

1. The WindFloat Project
WindFloat 2 MW Floating Offshore Wind
Coimbra, 19th of November, 2013
Pedro Valverde
EDP Inovação

2. Agenda
1. Why Floating Offshore Wind?
2. WindFloat Technology
3. The WindFloat Project
4. Preliminary performance analysis
5. Conclusions
The WindFloat Project
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3. Why Floating Offshore Wind?
Why Offshore Wind?
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•
•
•
Higher wind resource and less turbulence
Large ocean areas available
Best onshore wind locations are becoming scarce
Offshore wind, including deep offshore, has the
capacity to deliver large amount of energy
Why Floating Offshore Wind?
•
•
•
•
•
Limited locations with shallow waters (mostly in the
North Sea)
Most of the offshore wind resource is in deep waters
Unlimited installation sites available
Less restrictions for offshore deployments and
reduced visual impacts
Enormous potential around the world: PT, Spain, UK,
France, Norway, Italy, the Americas, Asia …
The WindFloat Project
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4. Agenda
1. Why Floating Offshore Wind?
2. WindFloat Technology
3. The WindFloat Project
4. Preliminary performance analysis
5. Conclusions
The WindFloat Project
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5. The WindFloat Technology
The main characteristics of the WindFloat leads to High Stability even in rough seas
Turbine Agnostic
• Conventional turbine (3-blade, upwind)
• Changes required in control system of the turbine
High Stability Performance
• Static Stability - Water Ballast
• Dynamic Stability - Heave Plates and active ballast system
- Move platform natural response above the wave excitation
(entrained water)
- Viscous damping reduces platform motions
• Efficiency – Closed-loop Active Ballast System
Depth Flexibility (>40m)
Assembly & Installation
• Port assembly – Reduced risk and cost
• No specialized vessels required, conventional tugs
• Industry standard mooring equipment
The WindFloat Project
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6. The WindFloat Technology
Due to the features of the WindFloat, the risk and cost of offshore works is significantly reduced
The WindFloat…
… requires NO PILLING
…is structurally decoupled from seadbed
…is independent from depth
…is assembled and commissioned quayside
…does NOT require high lift capacity vessels
Reduced Risk and Cost
The WindFloat Project
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7. The WindFloat Technology
Total displacement of the WindFloat is 2.750 ton. Total weight of the hull is 1.200 ton
Structure Dimensions
The WindFloat Project
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8. The WindFloat Technology
The WindFloat Project
EDP and Principle
Power sign MOA
for phased
development of
WindFloat
technology and
commercial
deployment of a
wind farm up to
150MW
EDP initiates the
WindFloat Project
with the
demonstration of a
WindFloat unit with
2MW wind turbine
generator grid
connected to be
installed in
Aguçadoura
Wave tank
testing of 1:67th
scale WindFloat
model at
University of
California,
Berkeley tow
tank
December 2011
July 2009
Principle Power
purchases
outright all
intellectual
property for
WindFloat from
MI&T
May 2009
Principle
Power
exclusively
licenses
WindFloat
intellectual
property from
MI&T
April 2009
September 2008
March 2007
Wave tank
testing of
1:80th scale
Minifloat III
concept at
Oceanic
June 2008
Wave tank testing
of 1:96th scale
Minifloat IV
concept at
University of
California,
Berkeley tow tank
Minifloat
patent 2
isssued
US7281881
Wave tank
testing of
1:96th scale
WindFloat
model at
University of
California,
Berkeley tow
tank
January 2009
MI&T files
Minifloat
patent 1
Minifloat
patent 1
issued
US7086809,
Minifloat
patent 2
filed
August 2006
Wave tank
testing of
Minifloat I &
II concept
June 2004
January 2004
August 2006
MI&T performs
Minifloat proof
of concept
model tests
June 2003
January 2003
WindFloat technology development – derived from an O&G concept and is now being tested full scale at sea
First electron
at
Aguçadoura
8

9. Agenda
1. Why Floating Offshore Wind?
2. WindFloat Technology
3. The WindFloat Project
4. Preliminary performance analysis
5. Conclusions
The WindFloat Project
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10. The WindFloat Project
The WindFloat project is structured to follow a phased / risk mitigation approach
Phase 1 – Demonstration
Capacity: 2MW WindFloat prototype
Location: Aguçadoura, grid connected
~6 km of coast, 40 - 50 m water depth
Turbine: 2MW offshore wind turbine
Test period: 24+ months
Phase 2 - Pre-commercial
Capacity: ~27MW (~5 WindFloat units)
Location: Portuguese Pilot Zone
Turbine: Likely Vestas and other, Multi MW
Phase 3 - Commercial
Capacity: 150MW, gradual build-out
Location: TBD
Turbine: TBD
The WindFloat Project
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11. The WindFloat Project
The WindFloat project was structured as a Joint Venture, WindPlus
The Project is promoted by…
…in a joint venture…
WindPlus
…and counts with the support of…
The WindFloat Project
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12. The WindFloat Project
The development of the WindFloat project carried enormous challenges due to the lack of know-how in Portugal
The project followed a risk mitigation approach but…
…the challenges were enormous…
…project being done for the first time
…Lack of offshore know-how in Portugal
…different cultures involved(US, Denmark, Portugal, France)
…Collaboration between two different industries that have
never worked together (Oil & Gas and Wind Industry)
… Standards & Rules for design exist but need to adapted
The WindFloat Project
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13. The WindFloat Project
The project followed the typical stages of an engineering project
Project Planning
Pre-FEED
FEED
Engineering
Detailed Drawings &
Construction Drawings
Site detailed
charact.
Scope
Definition
Design Basis
Project Execution
Scope and Prel.
Eng. Defined?
Detailed Eng.
Drawings &
Philosophy
FEED
Defined?
Equipment
Procurement
Fabrication &
Installation
Risk Mitigation Activities
The WindFloat Project
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14. The WindFloat Project
Effective Risk Management must be embed into the project since the very early beginning
Risk Management methodologies implemented through out the project were key for
the success of the project
• HAZID – Hazard Identification Study
•
Conducted at an early stage of the project
• Focus in the Project Execution stage
• Provided inputs to the FEED stage
• HAZOP – Hazard and Operability Study
• Several workshops conducted during FEED
• Participants were the teams involved in the
activities and engineering team
• Provides input to the FEED stage
• HIRA – Hazard Identification and Risk
Assessment
• Workshop conducted prior to execution of
the activities
• Plan and procedures of each activities
already defined
• Outcome provides inputs to reduce the risk
while executing the activities
The WindFloat Project
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15. The WindFloat Project
The project was implemented under a tight scheduled
Project was completed in less than 2,5 years
Fabrication completed in less than 9 months
Task
Project Start
Timeline
Sep, 09
Jan, 10
Pre-FEED
PDR
FEED
Sep, 10
Turbine Selection
Final Investment Decision
Project Execution
Detail Design
Fabrication
Offshore Installation
Sep, 11
Sep, 11
May, 11
Sep, 11
Nov, 11
Dez, 11
Offshore Commissioning
Testing and Monitoring
…
Ago, 13
Significant space to improve project implementation schedule!
The WindFloat Project
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16. Workshop Fabrication of main components
A. Silva Matos was the responsabilbe for the
fabrication of the WindFloat
The WindFloat Project
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17. Pre-assembly of the columns
outside the Dry-dock in Setúbal
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18. Columns moved to Dry-dock
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19. Dry-dock assembly
The WindFloat Project
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20. Mooring Pre-Lay in parallel
with the fabrication
The WindFloat Project
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21. Turbine Installation in the Dry Dock using the
shipyard’s gantry crane
The WindFloat Project
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22. Tow from Setúbal to Aguçadoura (~400 km) using the
same vessel that was used for the mooring installation
The WindFloat Project
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23. Hook-up at final location
The WindFloat Project
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24. Energy delivery since December 2011!
More than 7,9 GWh produced up today!
The WindFloat Project
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25. Agenda
1. Why Floating Offshore Wind?
2. WindFloat Technology
3. The WindFloat Project
4. Preliminary performance analysis
5. Conclusions
The WindFloat Project
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26. Preliminary performance analysis
The WindFloat is monitored 24 hours a day remotely
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27. Preliminary performance analysis
Survivability and performance proved in normal and extreme conditions
22 Oct 2011
Installation complete
23 Dec 2011
First Electron produced
01 Nov 2011
15 meters wave
The WindFloat Project
03 Jan 2012
Operation in Hs=6m and
Hmax=12,6m
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28. Agenda
1. Why Floating Offshore Wind?
2. WindFloat Technology
3. The WindFloat Project
4. Preliminary performance analysis
5. Conclusions
The WindFloat Project
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29. Conclusions
• The fabrication and installation were successfully complete despite all the challenges faced
• The technical results of the first 6 months of operation of the WindFloat are very promising
• The testing and monitoring of the WindFloat will continue during the next years
• WindPlus will start to prepare the Pre-Commercial phase
• One step towards the development of deep offshore wind
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30. Thank you!
The WindFloat Project
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