The Super Smart Windy Grid

1
The Super Smart Windy Grid The Offshore Option

• Presentation by Peter McGarley
• RenewableUK 2010
• Glasgow SECC 3rd November

2
Senergy Econnect

• International consultants and advisors in
  renewable energy and grid integration
• Over 50GW of grid integration studies for wind
  with 3GW projects connected
• Services include

• Electrical engineering
• On-site generation
• Grid connection feasibility
• Grid code compliance
• Due diligences
• Commercial regulatory
• Geophysical and geotechnical consultancy
• Cable routing and burial protection indices

• Consultancy
• Smartgrid products
• Electrical design
• Technical adviser
• Technical services
• Strategic services
• Foundation design, construction and installation
  assessment

3
EU OffshoreGrid

• PROJECT DNA
• Techno-economic study
• Coordinator 3E, 8 partners, consultancy
  applied research
• Budget 1.4 million euros
• Funding 75 from Intelligent Energy Europe
  (Contract IEE/08/780/SI2.528573)
• May 2009 to October 2011

4
Consortium Members

• CONSULTANTS
• 3E strategy, techncial coordination, management
• Senergy Econnect Grid design optimisation
• IEO thorough knowledge on wind power policy
• dena power markets and regulatory situation
• APPLIED RESEARCH
• Sintef power market model and TradeWind
  experience
• Uni Oldenburg energy meteorology
• NTUA wind energy in the Mediterranean
• INDUSTRY ASSOCIATION
• EWEA communication and technical review
• STAKEHOLDER INPUT / REVIEW

5
EU OffshoreGrid

• GENERAL OBJECTIVES
• Recommendations on topology and capacity choices
• Guideline for investment decision project
  execution
• Trigger a coordinated approach for the
  Mediterranean ring
• SPECIFIC OBJECTIVES
• A selection of blueprints for an offshore grid
• Business figures for investments and return
• Insight in interaction of design drivers and
  techno-economic parameters
• Representative wind power time series
• Feedback from acceptance by stakeholders

6
EU OffshoreGrid

• Senergy Econnect scope
• To provide the technical design for an integrated
  offshore transmission network allowing connection
  of offshore wind and marine renewables and
  interconnection between the countries of the
  Baltic and North Seas for the purposes of
  arbitrage where justified
• Technical design is integrated in to a power
  market model of the European grid produced by
  SINTEF to assess power flows on offshore grid
  iterative process
• To provide a cost estimate for such a network or
  networks

7
EU OffshoreGrid Reference

• Planned offshore wind and marine

Country OffshoreGrid offshore scenario OffshoreGrid offshore scenario
Country 2020 2030
Belgium 1 994 3 794
Denmark 2 329 3 799
Estonia 0 1 600
Finland 590 3 190
France 2 510 4 914
Germany 10 249 26 553
Ireland 1 055 3 780
Latvia 0 900
Lithuania 0 1 000
Netherlands 4 622 12 122
Norway 957 9 667
Poland 500 5 300
Russia 0 500
Sweden 2 983 10 522
UK 15 303 38 146
Total Northern EU 42 135 115 620
Total OffshoreGrid 43 093 125 787
8
EU OffshoreGrid Reference

• ENTSO-E - TYNDP

9
Radial Scenario

• Initial step define radial scenario
• Each project connected radially to selected
  onshore connection point
• Appropriate technology solution selected based on
  project capacity, timing and connection distance,
  e.g.
• HVAC technology ineffective beyond 80km
• Projects lt2020 use technology commercially
  available today
• Projects gt2030 use evolved technologies
• Connection distance determined by GIS plots
  around subsea obstacles

10
Key Design Assumptions

• OffshoreGrid technology used to be evolutionary
  rather than revolutionary
• Pre 2010 150kV HVAC 3 core subsea cable
• /- 150kV 400MW HVDC Voltage Source
  Converters
• 2010 2020 220kV HVAC 3 core subsea cable
• /-320kV 1000MW HVDC Voltage Source Converters
• 320kV XLPE subsea HVDC cable
• 2020 2030 380kV HVAC 3 core subsea cable
• /-500kV 2000MW HVDC Voltage Source Converters
• 500kV XLPE subsea HVDC cable
• HVDC Circuit Breakers

11
Radial Scenario
12
Radial Scenario

• Statistics
• Total Connected Capacity 129GW
• Total Cost 83.201bn
• 643k/MW
• Total length of cable 31,500km
• 294 HVDC VSC converter stations

13
Hubs

• 1st stage of Offshore Grid
• Group projects into hubs and share export cables
• Cost effective
• Less cabling
• Fewer cables at landfall
• Risk of stranded assets

14
Case Study German Hubs

• Total Connected Capacity 26.6GW
• Hubs
• Total Cost 18,650m (15,280m excluding
  onshore cables)
• 702k/MW (575k/MW excluding onshore cables)
• Base Case Comparison
• Total Cost 28,069m (20,116m excluding
  onshore cables)
• 1057k/MW (758k/MW excluding onshore cables)

15
Meshed OffshoreGrid

• Connect /- 320kV and /-500kV hubs
• Defined by prototype Grids
• Justified by further need for arbitrage between
  countries
• Capacity for interconnection to be established
  from market model iterations

16
Meshed OffshoreGrid

• Comparison
• Look at Additional Direct Links
• Higher capital cost
• No constraint
• Key determine balance of cost and constraint
  from modelling

17
EU OffshoreGrid Challenges

• Technical
• Onshore bottlenecks
• Technology e.g. different voltages used
• Market
• Planning uncertainties
• Risk financing
• Variable generation vs long-term contract on
  cable
• Regulatory
• Different regulatory schemes
• Slow permitting procedures
• Unclear cost allocation allowed profit margins
• Policy
• Renewable energy support schemes
• Political priorities

18
EU OffshoreGrid

• Stakeholder Meetings
• We want your input
• Held twice per year
• Next meeting
• 22nd November 2010
• Berlin
• See details on www.offshoregrid.eu or me
  afterwards

19
Senergy Econnect

• Thank You
• Peter McGarley
• econnect_at_senergyworld.com
• 44 (0)191 238 7300