CSP Alliance 1 http://www.csp-alliance.orgCSP OverviewSEPA WebinarJanuary 31, 2013Frank (Tex) WilkinsExecutive DirectorCSP...
CSP Alliance 2 http://www.csp-alliance.orgConcentrating Solar Power Alliance• CSP Alliance - an advocacy group formed in M...
CSP Alliance 3 http://www.csp-alliance.orgAgenda• Introduction• Plant characteristics• Storage• Solar collection• Projects...
CSP Alliance 4 http://www.csp-alliance.orgSolana: photos courtesy of Abengoa. 4CSP Storage & Power Block
CSP Alliance 5 http://www.csp-alliance.orgPlant Characteristics• Project start up – if the turbine is warm it takes 10 min...
CSP Alliance 6 http://www.csp-alliance.orgDispatch ExamplesJuly0.00.20.40.60.81.01.21.41.61.81 2 3 4 5 6 7 8 9 10 11 12 13...
CSP Alliance 7 http://www.csp-alliance.orgCSP (trough) Water Requirements• Cooling– Wet Cooling 700-900 gal / MWh– Dry Coo...
CSP Alliance 8 http://www.csp-alliance.orgThermal Energy StorageTypical CSP storage is heating a mixture of nitrate salts ...
CSP Alliance 9 http://www.csp-alliance.orgTrough Power Plantw/ 2-Tank Molten Salt Thermal StorageHeat ExchangerHotTankCold...
CSP Alliance 10 http://www.csp-alliance.orgTrough Power Plant:Power GenerationHeat ExchangerHotTankColdTankPumpSolar Field...
CSP Alliance 11 http://www.csp-alliance.orgTrough Power PlantPower Generation and Charging StorageHeat ExchangerHotTankCol...
CSP Alliance 12 http://www.csp-alliance.orgTrough Power PlantPower from Thermal StorageHeat ExchangerHotTankColdTankPumpSo...
CSP Alliance 13 http://www.csp-alliance.orgStorage Provides Intraday SystemStability05010015020025030001002003004005006007...
CSP Alliance 14 http://www.csp-alliance.orgStorage Promoting Flexibility• Use of storage can lessen grid ramps (the rate o...
CSP Alliance 15 http://www.csp-alliance.orgCategories of ValueEnergy  Hourly optimization of energy schedules Subhourly ...
CSP Alliance 16 http://www.csp-alliance.org• Parabolic trough technology uses long parabolic mirrors, with an absorber tub...
CSP Alliance 17 http://www.csp-alliance.org• Power towers use an array of flat, moveable mirrors, called heliostats, to fo...
CSP Alliance 18 http://www.csp-alliance.orgCSP Plants Under Construction in the U.S.Solana Mojave Genesis CrescentDunesIva...
CSP Alliance 19 http://www.csp-alliance.orgSolana: trough 280 MWwith 6 hrs StoragePhotos courtesy Abengoa
CSP Alliance 20 http://www.csp-alliance.orgIvanpah: 3 towers totaling 392 MW*photos courtesy BrightSource
CSP Alliance 21 http://www.csp-alliance.orgIvanpah
CSP Alliance 22 http://www.csp-alliance.orgCrescent Dunes: 110 MW with 10 hrs storage*photos courtesy Solar Reserve
CSP Alliance 23 http://www.csp-alliance.orgSolar Collection Direct normal, diffuse, and global solar radiation CSP can u...
CSP Alliance 24 http://www.csp-alliance.orgSolar Resource in U.S. Southwest
CSP Alliance 25 http://www.csp-alliance.orgDOE & BLM: identifying land for CSPdeploymentApproach: a programmatic environme...
CSP Alliance 26 http://www.csp-alliance.orgCost Reduction: R&D and Deployment• Sargent & Lundy’s due-diligencestudy* evalu...
CSP Alliance 27 http://www.csp-alliance.orgDeployment is as more important inreducing cost as R&D advancementsImportance o...
CSP Alliance 28 http://www.csp-alliance.orgDOE’s SunShot Goal**SunShot Vision Study, Feb 2012,http://www1.eere.energy.gov/...
CSP Alliance 29 http://www.csp-alliance.org• High Temperature Systems – higher operating temperatureincreases system effic...
CSP Alliance 30 http://www.csp-alliance.orgFrank “Tex” WilkinsExecutive DirectorConcentrating Solar PowerAlliancePhone: (4...
Note – This presentation is not owned by RE-Docs. It has simply been shared for widerdissemination because of its useful c...
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Benefits of csp with thermal storage

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To download, head to - http://solarreference.com/cspalliance-csp-thermal-energy-storage-presentation/

Also available at CSP alliance website. Key information includes - direct comparison of a CSP power plant with a conventional power plant, importance of thermal energy storage and the fact that deployment would lead to much more cost reduction than r&d.

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Benefits of csp with thermal storage

  1. 1. CSP Alliance 1 http://www.csp-alliance.orgCSP OverviewSEPA WebinarJanuary 31, 2013Frank (Tex) WilkinsExecutive DirectorCSP AllianceConcentrating Solar Power Alliance
  2. 2. CSP Alliance 2 http://www.csp-alliance.orgConcentrating Solar Power Alliance• CSP Alliance - an advocacy group formed in March 2012 whosegoal is to increase the deployment of CSP• Mission – inform utilities, grid operators, and regulators of thebenefits of CSP with its ability to store thermal energy and providedispatchable power• Members - membership includes Abengoa, BrightSource, TorresolEnergy, Lointek, Cone Drive, and Wilson Solarpower
  3. 3. CSP Alliance 3 http://www.csp-alliance.orgAgenda• Introduction• Plant characteristics• Storage• Solar collection• Projects• Cost and future developments• Question and answer
  4. 4. CSP Alliance 4 http://www.csp-alliance.orgSolana: photos courtesy of Abengoa. 4CSP Storage & Power Block
  5. 5. CSP Alliance 5 http://www.csp-alliance.orgPlant Characteristics• Project start up – if the turbine is warm it takes 10 minutes from startto full power. If the plant is operating as spinning reserve, full capacitycan be reached in 4 minutes. The plant can be started and increasedto full load in 10 minutes or less.• Off-design operation - CSP plants can operate efficiently at off-designconditions. For example, the efficiency of a steam turbine at 50% loadis about 95% of the design efficiency.• Power quality – same as power from fossil plants providing reactivepower support, dynamic voltage support, and primary frequencycontrol.• Dispatch of stored energy – power can be put onto the grid at anytime, day or night.
  6. 6. CSP Alliance 6 http://www.csp-alliance.orgDispatch ExamplesJuly0.00.20.40.60.81.01.21.41.61.81 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24Hour EndingUtilityLoad,TroughPlantOutput0100200300400500600700800900SolarResource(W/m2)Relative Value of Generation Trough Plant w/6hrsTES Solar RadiationJanuary0.00.20.40.60.81.01.21.41.61 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24Hour EndingUtilityLoad,TroughPlantOutput0100200300400500600700800SolarResource(W/m2)Relative Value of Generation Trough Plant w/6hrs TES Solar Radiation*Graphs courtesy of Arizona Public ServiceSummer: dispatch power tomeet afternoon & early eveningpeak demandWinter: dispatch power tomeet morning and eveningperiods of peak demand
  7. 7. CSP Alliance 7 http://www.csp-alliance.orgCSP (trough) Water Requirements• Cooling– Wet Cooling 700-900 gal / MWh– Dry Cooling 70-90 gal / MWh• Mirror washing ~ 50 gal / MWh• Steam cycle cleaning ~ 50 gal / MWhImpact of Dry Cooling:~90% less water with:• 4-7% cost increase in hotclimates (e.g. Las Vegas, NV)• 3-5% cost increase in coolerclimates (e.g. Alamosa, CO)
  8. 8. CSP Alliance 8 http://www.csp-alliance.orgThermal Energy StorageTypical CSP storage is heating a mixture of nitrate salts from 390°C(troughs) to 560°C (towers). Salt heated in the solar field is placed inthe hot tank. Salt coming from the turbine goes to the cold tank.*Photos courtesy Abengoa
  9. 9. CSP Alliance 9 http://www.csp-alliance.orgTrough Power Plantw/ 2-Tank Molten Salt Thermal StorageHeat ExchangerHotTankColdTankPumpSolar FieldSteam TurbinePower BlockStorage
  10. 10. CSP Alliance 10 http://www.csp-alliance.orgTrough Power Plant:Power GenerationHeat ExchangerHotTankColdTankPumpSolar FieldSteam TurbineStorage Power Block
  11. 11. CSP Alliance 11 http://www.csp-alliance.orgTrough Power PlantPower Generation and Charging StorageHeat ExchangerHotTankColdTankPumpSolar FieldSteam TurbineStorage Power Block
  12. 12. CSP Alliance 12 http://www.csp-alliance.orgTrough Power PlantPower from Thermal StorageHeat ExchangerHotTankColdTankPumpSolar FieldSteam TurbineStorage Power Block
  13. 13. CSP Alliance 13 http://www.csp-alliance.orgStorage Provides Intraday SystemStability050100150200250300010020030040050060070080090010000:00 1:40 3:20 5:00 6:40 8:20 10:00 11:40 13:20 15:00 16:40 18:20 20:00 21:40 23:20PowerOutput(MWhe)DirectNormalIrradianceDNI(W/m2)April 12, 2012 (Time of Day)*Chart courtesy of Solar Reserve
  14. 14. CSP Alliance 14 http://www.csp-alliance.orgStorage Promoting Flexibility• Use of storage can lessen grid ramps (the rate ofincrease/decrease in grid system power) and reduce operatoruncertainty due to solar forecast errors.• High capacity value helps meet resource adequacy requirements• Plant can provide spinning or non spinning reserves• Importance of storage increases as grid penetration increases ofwind and solar without storage*– Little value of storage at low grid penetration of renewable energy– The benefits of storage at higher renewable penetration can be in therange of $30-40/MWh relative to renewables w/o storage due toenergy, ancillary services, capacity, power quality and avoidedsystem costs of integration in recent studies by LBNL and NREL• CSP with storage enables greater use of PV* Ref: “The Economic and Reliability Benefits of CSP with Thermal Storage:Recent Studies and Research Needs”, CSP Alliance Report, Dec 2012.
  15. 15. CSP Alliance 15 http://www.csp-alliance.orgCategories of ValueEnergy  Hourly optimization of energy schedules Subhourly energy dispatch Ramping reservesAncillary services(for secondary frequencycontrol) Regulation 10-minute spinning reserves 10-min non-spinning reserves Operating reserves on greater than 10 minute time-framesPower quality and otherancillary services Voltage control Frequency response BlackstartCapacity  Generic MW shifted to meet evolving system needs Operational attributesIntegration andcurtailment costscompared to solar PV andwind Reduced production forecast error and associatedreserve requirements Reduced curtailment due to greater dispatch flexibilitywithout production losses Ramp mitigation
  16. 16. CSP Alliance 16 http://www.csp-alliance.org• Parabolic trough technology uses long parabolic mirrors, with an absorber tube running each mirror’slength at the focal point. Sunlight is reflected by the mirror and concentrated on the absorber tube.• Heat transfer fluid, comprised of oil or molten salts, runs through the tube to absorb the concentratedsunlight. The heat transfer fluid is then used to heat steam for a turbine/generator or heat storage.• Trough systems are sensitive to economies of scale and estimated to be most cost effective at100 MW or greater.• Solar concentration: 75 suns | Operating temp: 390°C |Solar Collection: Trough Technology
  17. 17. CSP Alliance 17 http://www.csp-alliance.org• Power towers use an array of flat, moveable mirrors, called heliostats, to focus the suns raysonto a receiver at the top of a central tower. The energy in the receiver is transferred to aheat transfer fluid (salt or steam) which is used to heat steam for a turbine/generator orstorage media (salt).• Molten salt allows solar energy from daylight hours to be stored to generate steamthroughout the evening. The high operating temperature enables less expensive storage.• Due to power block requirements, power towers are sensitive to economies of scale and aretypically most economical at 100 MW or more.• Solar concentration: 800 suns | Operating temperature: 560°CSolar Collection: Power Towers
  18. 18. CSP Alliance 18 http://www.csp-alliance.orgCSP Plants Under Construction in the U.S.Solana Mojave Genesis CrescentDunesIvanpahTechnology Trough w/6hrs storageTrough Trough SaltTowerw/10 hrsstorageSteamTowersCapacity(MW)280 280 250 110 392Jobs-construction1,6001,000 and 80800 600 1,000Jobs-permanent85 47 45 86Location Arizona California California Nevada CaliforniaDOE LoanGuarantee$1.45B $1.2B $0.85B $0.74B $1.6BCompletion 2013 2014 2013 2013 2013Developer Abengoa Abengoa NextEra SolarReserveBrightSource18
  19. 19. CSP Alliance 19 http://www.csp-alliance.orgSolana: trough 280 MWwith 6 hrs StoragePhotos courtesy Abengoa
  20. 20. CSP Alliance 20 http://www.csp-alliance.orgIvanpah: 3 towers totaling 392 MW*photos courtesy BrightSource
  21. 21. CSP Alliance 21 http://www.csp-alliance.orgIvanpah
  22. 22. CSP Alliance 22 http://www.csp-alliance.orgCrescent Dunes: 110 MW with 10 hrs storage*photos courtesy Solar Reserve
  23. 23. CSP Alliance 23 http://www.csp-alliance.orgSolar Collection Direct normal, diffuse, and global solar radiation CSP can use only the direct because diffuse can not be effectively focused orconcentratedSOURCE: Status Report on Solar Thermal Power Plants, Pilkinton Solar International, 1996.
  24. 24. CSP Alliance 24 http://www.csp-alliance.orgSolar Resource in U.S. Southwest
  25. 25. CSP Alliance 25 http://www.csp-alliance.orgDOE & BLM: identifying land for CSPdeploymentApproach: a programmatic environmental impact statement(PEIS)• BLM manages 119 million acres in the 6 Southwestern states where thesolar resource is most intense (CA, NV, NM, AZ, CO, and UT)• Identification of land that isappropriate for solar deployment fromtechnical and environmentalperspectives• Streamline evaluation and processingof solar projects• Identification of additional transmissioncorridors crossing BLM-managed land• 17 solar zones proposed totaling about285,000 acres
  26. 26. CSP Alliance 26 http://www.csp-alliance.orgCost Reduction: R&D and Deployment• Sargent & Lundy’s due-diligencestudy* evaluated the potential costreductions of CSP.• Cost reductions for CSPtechnology will result from R&Dand deployment.* Sargent and Lundy (2003). Assessment of Parabolic Troughand Power Tower Solar Technology Cost and PerformanceImpacts. http://www.nrel.gov/docs/fy04osti/34440.pdf
  27. 27. CSP Alliance 27 http://www.csp-alliance.orgDeployment is as more important inreducing cost as R&D advancementsImportance of Deployment on Cost
  28. 28. CSP Alliance 28 http://www.csp-alliance.orgDOE’s SunShot Goal**SunShot Vision Study, Feb 2012,http://www1.eere.energy.gov/solar/sunshot/vision_study.htmlReduce the installed cost of solar energy systems to about 6¢kWhw/o tax incentives, driving widespread, large-scale adoption of thisrenewable energy technology
  29. 29. CSP Alliance 29 http://www.csp-alliance.org• High Temperature Systems – higher operating temperatureincreases system efficiency.– Existing steam systems operate at 390oC – 565oC with 37-42%efficiency.– Research focused on supercritical CO2 Brayton operating at 600oC-800oC with 50-55% efficiency• Storage – two tank salt the standard to beat but explore otheroptions like higher temp storage/heat transfer fluid materials, phasechange and solid materials, including direct steam• Solar Field – reduce collector cost while maintaining or improvingoptical performance• Receivers – develop selective coatings for high temperaturereceiversPaths to SunShot Goal – DOE R&D
  30. 30. CSP Alliance 30 http://www.csp-alliance.orgFrank “Tex” WilkinsExecutive DirectorConcentrating Solar PowerAlliancePhone: (410) 960-4126tex.wilkins@gmail.comThank You
  31. 31. Note – This presentation is not owned by RE-Docs. It has simply been shared for widerdissemination because of its useful content. The author have been clearly acknowledged onwww.redocs.co In case of any issues you may contacts us at www.redocs.co/contactVisit us onwww.redocs.coyour personal library on REHope you found the presentation useful!for similar useful material

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