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Transcript

  • 1. Transmission of offshore wind power Dr Richard Smith Future Transmission Networks Manager
  • 2. The UK generation mix is changing 2020 generation capacity ~110GW The changing mix (GW)
  • 3. The delivery challenge: renewable generation connections Target How are we doing against the Government targets? Data source: National Grid TNQCU – August 2011; National Grid 2011 SYS. Connected renewable generation excludes pumped storage.
  • 4. The delivery challenge: renewable generation connections Target How are we doing against the Government targets? Data source: National Grid TNQCU – August 2011; National Grid 2011 SYS. Connected renewable generation excludes pumped storage.
  • 5. Offshore generation scenarios
  • 6. The transmission delivery challenge France existing electricity network potential wind farm sites potential nuclear sites interconnectors France Netherlands Belgium Norway Ireland
  • 7. Technology development Technology Research & Development Ongoing research into state of the art technology and future growth requirements which may offer efficiencies through larger capacities, greater reliability and increased control options. Technology Evolution Manufacturers confident of larger HVDC VSC converters and cables will be available in the short to medium times. Promoting standardisation of assets Extruded HVDC Cables HVDC Offshore Projects
  • 8. Planning consents Sellindge (Kent) 2GW HVDC converter Westminster
  • 9. How will we balance supply and demand? Generation Demand Variable generation Large generation Inflexible generation Active distribution networks Smart(er) grids & meters, energy storage Active demand Time of use tariffs Distributed generation Smarter transmission Smart zones HVDC Series compensation WAM
  • 10. 82 year daily wind loadfactor
  • 11. Daily wind loadfactor percentiles 82 year data set - 15 day rolling average
  • 12. Gone Green installed capacity ?
  • 13. Summary
    • National Grid’s focus: ensuring we facilitate a secure, low carbon energy solution
    • Integrated transmission solutions are key to maximising deliverability of offshore wind
    • CCGTs important managing variability and balancing – implications for gas transmission network
    • Significant change in UK generation mix
    • Offshore wind a key feature
    • Planning, financing and technology uncertainties exist
    • Increased volatility brings new balancing challenges