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Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
Solar Power Generation 2011 (Las Vegas, NV)
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Solar Power Generation 2011 (Las Vegas, NV)

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Mitchell Dong presents on the benefits of storage and solar thermal applications. Uses data from Andasol I, II, and Exesol I.

Mitchell Dong presents on the benefits of storage and solar thermal applications. Uses data from Andasol I, II, and Exesol I.

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  • Source: http://www.combinedcyclejournal.com/Archives/2Q2009.html
  • Source: http://www.combinedcyclejournal.com/Archives/2Q2009.html
  • Source: http://www.nrel.gov/eis/pdfs/solar_power_high_penetration_chadliev.pdf
  • All of the Andasol Information coming from the SENER presentation on Andasol given in New Dehli in September 2010 and @ the Solar Paces conference in Berlin in 2009.
  • Transcript

    • 1. Solar Power Generation USA January 26 th , 2011 Benefits of Storage By: Mitchell Dong
    • 2. <ul><ul><li>3rd largest contractor in the world </li></ul></ul><ul><ul><li>$21 Billion revenues </li></ul></ul><ul><ul><li>Vertically integrated </li></ul></ul><ul><ul><li>Wholly owned by ACS </li></ul></ul><ul><ul><li>Largest power plant engineer in Spain </li></ul></ul><ul><ul><li>Technology developer and provider </li></ul></ul><ul><ul><li>Engineering Firm </li></ul></ul><ul><ul><li>Wholly owned by ACS </li></ul></ul><ul><ul><li>Developer </li></ul></ul><ul><ul><li>EPC contractor </li></ul></ul><ul><ul><li>Equity Investor </li></ul></ul><ul><ul><li>Owner and Operator </li></ul></ul>Whole package under one roof
    • 3. ACS Cobra Spanish trough projects with molten salt 100% owned by Cobra Andasol-I Andasol-II Extresol-I Extreso-II Manchasol-I Manchasol 1,2 Andasol 1,2,4,5,6,7 Extresol1,2,3 Commercial Operation Construction Extresol-III Manchasol-II Development Andasol-IV Andasol-V Andasol-VI Andasol-VII
    • 4. Hualapai Valley Solar Project Mohave County, AZ
    • 5. Overview <ul><li>Parabolic Trough </li></ul><ul><li>500MW solar field </li></ul><ul><li>2x170MW steam turbines (340MW gross) </li></ul><ul><li>8 hours molten salt storage </li></ul><ul><li>$2.5 Billion project </li></ul><ul><li>Private Land </li></ul><ul><li>Located 100 miles south of Las Vegas in Arizona </li></ul><ul><li>Wet Cooling – reclaimed water from sewage treatment plant </li></ul><ul><li>WAPA connection - No new transmission lines </li></ul>
    • 6. So. Nevada Summer Load Profile <ul><li>Peak – Noon to ten </li></ul>Source: http://www.combinedcyclejournal.com/Archives/2Q2009.html Utility Peak
    • 7. <ul><li>Mismatch between PV generation and peak period </li></ul><ul><li>PV misses 4-6 hours of peak demand </li></ul><ul><li>Half of PV generation is off peak </li></ul>PV Production and Load Profile Source: http://www.combinedcyclejournal.com/Archives/2Q2009.html Utility Peak
    • 8. <ul><li>100% of utility peak served by CSP with storage </li></ul>CSP with Storage and Load Profile Utility Peak
    • 9. The Violent Intermittency of Photovoltaics Source: http://www.nrel.gov/eis/pdfs/solar_power_high_penetration_chadliev.pdf
    • 10. Costs of Intermittent Power <ul><li>Intermittency can cause grid instability </li></ul><ul><li>Spinning reserve needed to replace sudden drops </li></ul><ul><li>Gas turbines or engines on standby </li></ul><ul><li>Storage eliminates the high cost of spinning reserve </li></ul>
    • 11. Relative Economics <ul><li>PV lower cost per KWh than CSP with storage </li></ul><ul><li>CSP with storage produces higher quality power </li></ul><ul><li>CSP premium price over PV justified because: </li></ul><ul><ul><li>Peak power versus off-peak </li></ul></ul><ul><ul><li>No intermittency </li></ul></ul><ul><ul><li>Avoid high cost of spinning reserve </li></ul></ul><ul><ul><li>More stable, constant production </li></ul></ul><ul><ul><li>Dispatchable, predictable, programmable </li></ul></ul>
    • 12. CASE STUDIES: Andasol 1, 2 and Extresol 1
    • 13. Andasol 1 & 2
    • 14. Extresol 1, 2, & 3
    • 15. First Plant: Andasol 1 <ul><li>First commercial power plant in the world with storage </li></ul><ul><li>50MW </li></ul><ul><li>7.5 hours storage </li></ul><ul><li>Salt Quantity: 28,000 Tons </li></ul><ul><li>Freezing Temperature: 221ºC </li></ul><ul><li>Operating Range:291ºC - 384ºC </li></ul>
    • 16. Cobra Learning Curve *Extresol 1 does not have 12 months of operations data yet
    • 17. Learning Curve: First 12 months *Extresol 1 does not have 12 month operations yet Andasol 1 Andasol 2 Extresol 1 <ul><li>Time to hit 100% availability </li></ul><ul><ul><li>Andasol 1 – took 12 months </li></ul></ul><ul><ul><li>Andasol 2 and Extresol 1 – took 7-8 months </li></ul></ul>Gradual improvement in monthly availability for all 3 plants
    • 18. Learning Curve: Best 6 months <ul><li>All three operated above 95% </li></ul><ul><li>Andasol 2 operated over 100% </li></ul>*Andasol 2 in Nov was down due to problems with substation ADD DATES TO FOOTNOTES Andasol 1 Andasol 2 Extresol 1
    • 19. Actual versus Model: Andasol 2 - MONTHLY *Results of continuous performance tests *Nov 2010 plant was down due to problem with substation <ul><li>By 4th month, plant was outperforming Model estimates consistently </li></ul><ul><li>In 5 out of 9 months, Actual production exceeded Model production </li></ul>Actual
    • 20. Actual versus Model: Andasol 2 - HOURLY <ul><li>Peak period – hourly exceeds model by 5% </li></ul><ul><li>Less filling of salt during peak to maximize peak production </li></ul><ul><li>Demonstrates operational flexibility </li></ul>Actual Production Model Production Actual Storage Model Storage DNI <ul><li>Demonstrates partial dispatchability </li></ul><ul><li>After 6 pm, salt level exceeds model </li></ul><ul><li>No operation of auxiliary gas boiler </li></ul>July 31, 2010- Representative summer day
    • 21. Actual versus Model: Andasol 2 - HOURLY with Gas Boiler Actual Production Model Production Actual Storage Model Storage DNI Boiler Activity Aug 25 th , 2010 – typical summer day with Gas Boiler Gas Boiler allows production throughout night <ul><li>At 11:40 am, note passing cloud: </li></ul><ul><ul><li>DNI dips 5% </li></ul></ul><ul><ul><li>But output only dips 1% </li></ul></ul><ul><ul><li>Cloud passes in 20 min. </li></ul></ul><ul><ul><li>Output dip only lasts 10 minutes </li></ul></ul><ul><li>Demonstration that storage can cut intermittency </li></ul>
    • 22. Learning Curve Statistics <ul><li>Availability factors improving with each plant as operating experience is gained over time. </li></ul><ul><li>Actual monthly and hourly performance exceeds Model expectations </li></ul><ul><li>Demonstration of how storage can deal with intermittency </li></ul><ul><li>Demonstration of how storage can offer partial dispatchability </li></ul><ul><li>ACS Integration: Interactive feedback between operations and design </li></ul><ul><li>ACS: Vertical integration expedites learning </li></ul>
    • 23. Benefits of Storage <ul><ul><li>Shift production from OFF peak to ON peak </li></ul></ul><ul><ul><li>Dispatchable, programmable, controllable </li></ul></ul><ul><ul><li>Reduce intermittency </li></ul></ul><ul><ul><li>Constant, stable, predictable production </li></ul></ul><ul><ul><li>Premium cost over PV is justified </li></ul></ul>Dispatchability
    • 24. Contact: Mitchell Dong [email_address] Contact: Manuel Cortes [email_address]

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