Frier - Concentrating Solar Power

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Scott Frier, COO of Abengoa Solar, presented at the GW Solar Institute Symposium on April 19, 2010. For more information visit: solar.gwu.edu/Symposium.html

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Frier - Concentrating Solar Power

  1. 1. ABENGOA SOLAR Concentrating Solar Power GW Solar Institute Symposium April 19, 2010 Washington, DC Solar Power for a Sustainable World 1
  2. 2. ABENGOA SOLAR Outline • The solar resource – what, where and how large • The technology – Concentrating Solar Power (CSP) • Why CSP and why now? • CSP performance highlights • Land and water requirements • CSP projects • Cost and benefits • Conclusions Solar Power for a Sustainable World 2
  3. 3. ABENGOA SOLAR Image of CSP plants Solar Power for a Sustainable World 3
  4. 4. ABENGOA SOLAR The Solar Resource Solar Power for a Sustainable World 4
  5. 5. ABENGOA SOLAR The Resource • Solar energy comes in two flavors – diffuse and direct (beam) • PV can use both components • CSP can use only the direct because diffuse can not be effectively focused or concentrated • So where is the direct solar energy found? Solar Power for a Sustainable World 5
  6. 6. Southwest Solar Resources ABENGOA SOLAR Unfiltered Data Solar Power for a Sustainable World 6
  7. 7. Filters to Identify Prime Locations for ABENGOA SOLAR CSP Development All Solar Resources 1. Start with direct normal solar resource estimates derived from 10 km satellite data. 2. Eliminate locations with less than some minimum level as these will have a higher cost of electricity. 3. Exclude environmentally sensitive lands, major urban areas, and water features. 4. Remove land areas with greater than 1% (and 3%) average land slope. 5. Locations Suitable for Eliminate areas with a minimum contiguous area of less than 1 square Development kilometers. Solar Power for a Sustainable World 7
  8. 8. Southwest Solar Resources ABENGOA SOLAR Previous Plus Slope < 1% and Topography Solar Power for a Sustainable World 8
  9. 9. Energy Benefits ABENGOA SOLAR Southwest Solar Energy Potential Solar Solar Generation Land Area Capacity Capacity State (mi 2) (MW) GWh AZ 13,613 1,742,461 4,121,268 CA 6,278 803,647 1,900,786 CO 6,232 797,758 1,886,858 NV 11,090 1,419,480 3,357,355 NM 20,356 2,605,585 6,162,729 UT 6,374 815,880 1,929,719 TX 23,288 2,980,823 7,050,242 Total 87,232 11,165,633 26,408,956 Solar zones are being identified to encourage CSP development where environmental impacts are minimized and infrastructure requirements are more easily met. As these zones gain broad stakeholder support, the “CSP sweet spot” maps will need to be revised and the potential re-estimated, both downward but still likely to be very significant Solar Power for a Sustainable World 9
  10. 10. ABENGOA SOLAR The CSP Technologies Solar Power for a Sustainable World 10
  11. 11. ABENGOA SOLAR How Do We Develop This Resource? • Concentrating Solar Technologies can be used to “mine” this resource. • Some of these technologies use curved mirrors to focus the sun’s rays and to make steam, others directly produce electricity. • This steam is used to produce electricity via conventional power equipment. • Can provide bulk and/or distributed generation. Solar Power for a Sustainable World 11
  12. 12. ABENGOA SOLAR Concentrating Solar Power Parabolic Trough Linear Fresnel Power Tower Dish Engine Concentrating PV Solar Power for a Sustainable World 12
  13. 13. ABENGOA SOLAR Trough Technology – Trough collectors (single axis tracking) – Heat-collection elements – Heat-transfer Oil – Oil-to-water steam generator – Oil-to-salt thermal storage – Conventional steam- Rankine cycle power block Solar Power for a Sustainable World 13
  14. 14. ABENGOA SOLAR Solar Power for a Sustainable World 14
  15. 15. ABENGOA SOLAR Flow Diagram HTF-Salt Heat Exchanger Solar Power for a Sustainable World 15
  16. 16. ABENGOA SOLAR Why CSP and Why Now? Solar Power for a Sustainable World 16
  17. 17. ABENGOA SOLAR Why CSP and Why Now? • Necessity – the utilities’ other options (coal, nuclear or natural gas) have significant long term risks with cost implications • Uniqueness of thermal energy storage • Favorable but still unreliable policies, such as mandated targets plus incentives • Public opinion favors solar Solar Power for a Sustainable World 17
  18. 18. ABENGOA SOLAR Performance Aspects Hybrid option Thermal Energy Storage Land Requirements Water or Air Cooling Solar Power for a Sustainable World 18
  19. 19. ABENGOA SOLAR CSP Hybrid is working in California 120% 12 – Averaged 80% on- CA Energy Mount Pinatubo Volcano Crisis peak capacity 100% 10 factor from solar – Over 100% with Insolation (kWh/m^2/day) On-Peak Capacity (%) 80% 8 fossil backup – Could approach 60% 6 100% from solar 40% 4 with the addition of thermal energy 20% 2 storage. 0% 0 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 SCE Summer On-Peak Solar Contribution Boiler Contribution Direct Normal Radiation Weekdays: Jun - Sep 12 noon - 6 pm Solar Power for a Sustainable World 19
  20. 20. Summer Generation Profile ABENGOA SOLAR Renewable Resource Fit (from Barbara Lockwood, APS) Solar w/storage Solar MW Wind ? Biomass, Geothermal 1 3 5 7 9 11 13 15 17 19 21 23 Hour of the Day Solar Power for a Sustainable World 20
  21. 21. ABENGOA SOLAR Dispatching Solar Power Generation from solar plant with storage can be shifted to match the utility system load profile Summer Winter Solar Plant With Storage vs. Utility System Load Solar Plant With Storage vs. Utility System Load July January 1.8 900 1.6 800 1.6 800 1.4 700 1.4 700 Solar Resource (W/m2) S ola r Re sourc e (W/m 2) 1.2 600 Utility Loa d, T rough P la nt Utility Load, Trough 1.2 600 1.0 500 Plant Output 1.0 500 Output 0.8 400 0.8 400 0.6 300 0.6 300 0.4 200 0.4 200 0.2 100 0.2 100 0.0 0 0.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Hour Ending Hour Ending Relative Value of Generation Trough Plant w/6hrs TES Solar Radiation Relative Value of Generation Trough Plant w/6hrs TES Solar Radiation Key: - Solar - Demand - Generation Solar Power for a Sustainable World 21
  22. 22. ABENGOA SOLAR Thermal Energy Storage • Based on Solar Two molten-salt power tower experience • Indirect 2-tank molten-salt design for parabolic trough plants • Uses oil to salt heat exchangers to transfer energy to and from storage Solar Power for a Sustainable World 22
  23. 23. ABENGOA SOLAR Land usage • CSP plants typically need about 5 acres per MW or about sq mile per 100MW or about 10 sq miles per GW • With TES this increases to about 6-8 acres per MW, depending on the hours of TES • This estimate generally applies to all CSP technologies Solar Power for a Sustainable World 23
  24. 24. ABENGOA SOLAR Wet Vs. Dry Cooling Technology Wet Cooling • Uses 3.5 m3 water per MWh, same as fossil plants • ~90% for cooling • The rest for the steam cycle and washing Dry Cooling • Reduces plant water consumption by ~90% • Increases plant capital cost ~5% • Reduces annual net output >5% • Significant reduction during hot periods • Increases cost of electricity ~10% Solar Power for a Sustainable World 24
  25. 25. ABENGOA SOLAR Hybrid Cooling Technology • A “hybrid” mix of wet and dry cooling • A number of approaches are possible • Commercially available option • Includes both dry and wet cooling towers • Relative size of wet and dry cooling towers determines water use Solar Power for a Sustainable World 25
  26. 26. ABENGOA SOLAR CSP Projects Solar Power for a Sustainable World 26
  27. 27. ABENGOA SOLAR CSP Projects • US has 430 MW in operation and 8,280 MW under signed contracts with utilities • Spain has 231 MW in operation and 961 MW under development and an additional 1,300 MW approved for the current feed-in tariff • Other countries have 160 MW in various stages of development Solar Power for a Sustainable World 27
  28. 28. CSP Business Estimated Activity in the ABENGOA SOLAR US (March 2010) Solar Power for a Sustainable World 28
  29. 29. ABENGOA SOLAR Solnova 1 and 3 as of December 2009 Solar Power for a Sustainable World 29
  30. 30. ABENGOA SOLAR ISCC for Algeria Solar Power for a Sustainable World 30
  31. 31. ABENGOA SOLAR ISCC Under Construction in Morocco Solar Power for a Sustainable World 31
  32. 32. ABENGOA SOLAR View of PS10 and PS20 Solar Power for a Sustainable World 32
  33. 33. ABENGOA SOLAR PS-10 Solar Power for a Sustainable World 33
  34. 34. ABENGOA SOLAR PS10 Operating Solar Power for a Sustainable World 34
  35. 35. ABENGOA SOLAR PS10 Heliostats Solar Power for a Sustainable World 35
  36. 36. ABENGOA SOLAR Solana Overview Solar Power for a Sustainable World Solana Generating Station West of Gila Bend, AZ
  37. 37. ABENGOA SOLAR Solar Power for a Sustainable World 37
  38. 38. ABENGOA SOLAR Solana Overview Site Location: The Solana site is located west of Gila Bend, Gila Bend • Solana Site AZ, approximately ~70 miles southwest of Phoenix. Map extent Solar Power for a Sustainable World 38 RS-15 RS-
  39. 39. ABENGOA SOLAR Overview: Solana Site Selection •High solar resource •Minimal slope •Proximity to electric grid •Proximity to transportation corridors •Water availability Solana •Previously Site disturbed land Solar Power for a Sustainable World RS-23 39 RS-
  40. 40. ABENGOA SOLAR Solana Overview Project Facts • 280 MW gross output with conventional steam turbines • “Solar Field” will cover about 3 square miles and contain ~ 2,900 trough collectors • Collectors are ~ 6m wide, 125m long, and over 6m in height • Plant water consumption approximately eight times less than current agricultural use • Thermal storage tanks allow electricity to be produced on cloudy days or several hours after sunset Solar Power for a Sustainable World 40
  41. 41. ABENGOA SOLAR Solana Overview Constructing Solana will require over 80,000 tons of steel – enough to build a second Golden Gate Bridge. Solar Power for a Sustainable World 41
  42. 42. ABENGOA SOLAR Cost and Benefits Solar Power for a Sustainable World 42
  43. 43. A Narrowing Cost Gap ABENGOA SOLAR (From Barbara Lockwood, APS) Large Scale Projects Global Uptake CSP Strong Developers Incentives Carbon Policy Fuel Risk Equipment and Labor Costs Traditional Increasing Fuel Prices Environmental Resources Solar Power for a Sustainable World 43
  44. 44. ABENGOA SOLAR Economic Benefits Using Solana (280 MW) as an example Jobs (direct) 1,500-2,000 jobs during construction 85-100 permanent jobs during operation Investment $1 billion in direct investment Tax revenues Between $300 and $400 million over 30 years Mirror factory Additional 180 permanent jobs in state Solar Power for a Sustainable World 44
  45. 45. ABENGOA SOLAR Abengoa and Abengoa Solar Solar Power for a Sustainable World 45
  46. 46. ABENGOA SOLAR Abengoa Abengoa is a technology and project development company applying innovative solutions for sustainable development in infrastructure, environment and energy sectors. Mature Founded 1941 Profitable Sales in 2009 of $5.6 billion US Focused Innovative solutions for long term sustainability Global Present in more than 70 countries, 64% of business outside Spain Large Over 23,000 employees Public Quoted on the Madrid stock exchange (ABG) Solar Power for a Sustainable World 46
  47. 47. ABENGOA SOLAR Abengoa Business Units Abengoa Abengoa Befesa Telvent Abeinsa Solar Bioenergy Environmental Information Engineering and Solar Energy Bioenergy Services Technologies Construction Solar Power for a Sustainable World 47
  48. 48. ABENGOA SOLAR CSP Technologies and Projects Abengoa Solar Develops ... Builds … Operates ... Troughs and Towers Parabolic Trough / Solar Tower Plants and Installations Some Examples ... Solucar Solnova Steam and water Platform: Solana & Mojave 1, 3 & 4 (Construction) PS10 & PS20 ISCCs heating Solnova, Solar Solar Project installations Tower Plants 2 & 5 (Development) (Spain) 250 MW 31 MW 560 MW 150/480 MW 2.4 MW (Spain) (Spain) (U.S.) (Algeria/ (U.S.) Morocco) Solar Power for a Sustainable World 48
  49. 49. ABENGOA SOLAR Conclusions • The US has a large CSP resource located in several regions • CSP is an attractive high-value resource because of its fixed cost, hedging, dispatchable and local economic benefits • CSP has proven performance, reliability and dispatchability • The cost of CSP will continue to decline as a result of R&D, larger plants, global market growth and the associated learning curve effects • CSP projects generally face the same financing, siting and transmission challenges as do other generation resources • CSP projects require project finance • Long-term low interest debt and/or grants are needed to support the growth of the CSP market • CSP has the attributes and scale potential to become a major element of the US generation resource portfolio Solar Power for a Sustainable World 49
  50. 50. ABENGOA SOLAR Contact Information Scott Frier Chief Operating Officer Abengoa Solar Tel: 760.962.9200 Scott.frier@solar.abengoa.com Solar Power for a Sustainable World 50

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