4A - Ken May by gstec

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ABENGOA SOLAR
Solar Power for Tomorrow's World


                   Solar Water Heating




   Ken May, P.E. Industrial Division Director, Abengoa Solar
    2011 ACEEE Hot Water Forum, Berkeley, CA May 2011
ABENGOA SOLAR                              Natural gas imports

      • California imports 86% of the natural gas used in the state
      • In future, NG use will increase for transportation fuel and
        in electricity generation to drive electric cars putting
        pressure on prices




                                   Denver Post


Solar Power for Tomorrow's World                                      2
ABENGOA SOLAR                           Solar Thermal Technology


      Solar Thermal Technology can:
      • Displace natural gas for more beneficial uses, such as
        electricity generation where it can be used for clean,
        efficient power generation
      • Boost the use of California’s indigenous solar energy
        resource
      • Stabilize energy prices for California industries that are
        importing energy from out of state and country
      • Increase direct and indirect employment in the
        manufacturing and construction industries
      • Mitigate greenhouse gas emissions and reduce air
        pollutants


Solar Power for Tomorrow's World                                     3
ABENGOA SOLAR                              Natural Gas Use


         Solar thermal technologies can displace natural gas in
         the residential, commercial and industrial sectors
         where over 60% of CA natural gas is consumed

    • Natural gas use in California is about 2.3% of total US energy
      consumption (2,244 trillion Btu)




Solar Power for Tomorrow's World                                       4
          ABENGOA                              What solar thermal can do




    • Domestic Hot Water (DHW)
    • Process Heat & Steam Generation
    • Food processing
    • Cleaning & Sanitization
    • Petroleum Refining
    • Enhanced Oil Recovery
    • Desalination
    • Power absorption chiller for cooling
    • Supply thermal energy for building heating




Solar Power for Tomorrow's World                                       5
          ABENGOA                  Hot water case study 1: 2010

 Federal Correctional
 Institution, Englewood,
 CO
 • 160 PT-1 parabolic trough
    collector modules (22,720
    ft2 aperture area)
 • 1.7 acres of land area
 • Peak delivery 1.3 MW (4.4
    million Btu/h)
 • Storage tank volume,
    16,000 gal
 • Solar field flow rate, 80
    gpm (3 hp pump)
 • Solar system rating: 150
    psig pressurized
    glycol/water, closed loop

Solar Power for Tomorrow's World                              6
          ABENGOA                     Operational Data: March 26, 2011


         Actual vs TRNSYS model data: temperatures and solar radiation




Solar Power for Tomorrow's World                                         7
          ABENGOA                              Operational Data: March 26, 2011


                         Actual vs TRNSYS model data: energy delivery




Solar Power for Tomorrow's World                                           8
          ABENGOA                  Hot water case study 2: 1998

 Federal Correctional
 Institution, Phoenix, AZ
 • 120 PT-1 parabolic trough
    collector modules (17,040
    ft2 aperture area)
 • 1.4 acres of land area
 • Peak delivery 0.9 MW (3
    million Btu/h)
 • Storage tank volume,
    22,000 gal
 • Solar field flow rate, 100
    gpm (3 hp pump)
 • Solar system rating: 150
    psig pressurized
    glycol/water, closed loop


Solar Power for Tomorrow's World                              9
                            ABENGOA                               Hot water case study 2: 1998




                            90000
                                                    Utility Savings, $
                            80000

                            70000
       Utility Savings, $




                            60000

                            50000

                            40000

                            30000                                              3 months
                            20000

                            10000

                               0
                                    1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
                                                                Year

Solar Power for Tomorrow's World                                                                       10
          ABENGOA                      Process steam generation



     • 54,000 ft2 PT-1 installation,
     (384 modules) 4 acres of land
     • 422 F (217 C), 300 psig
     steam used to heat oil to
     cook potato and corn chips




Solar Power for Tomorrow's World                              11
          ABENGOA                  Dehumidification and heating




     • 5,400 ft2 Roof Mounted
     PT-1 Trough System
     • Two-stage 99-ton
     Absorption chiller with NG
     backup
     • Low-pressure steam
     generation for process and
     space heat




Solar Power for Tomorrow's World                            12
          ABENGOA                    Building HVAC



     • 6,800 ft2 PT-1 installation
     • 60-ton ammonia-cycle
     absorption chiller
     • 7,500 gallon pressurized
     water storage tank
     • Summer cooling, winter
     heating




Solar Power for Tomorrow's World                 13
          ABENGOA                                    Air conditioning




          •      2,016 ft2 Roof Mounted Trough (RMT)
                 installation
          •      20-ton lithium bromide, single-effect absorption
                 chiller




Solar Power for Tomorrow's World                                    14
          ABENGOA                  Advantages of Solar Thermal Technologies



     • Solar thermal collectors convert sunlight into heat at high
       efficiency (60% or more)
     • The current market for large-scale solar thermal systems is
       small so expanded markets will reduce costs
     • Current installed costs are around $1/Wattthermal making
       systems competitive with petroleum fuels
     • Expanded markets will bring solar thermal systems into
       competition with natural gas
     • State incentives can leverage larger private investments
     • The US content of solar thermal systems is larger than PV,
       since overseas manufacture is less competitive


Solar Power for Tomorrow's World                                        15
          ABENGOA                    Barriers to Solar Hot Water


  • Unlike electricity, there are no mandates to deploy solar
    thermal technology to displace natural gas
  • Unlike PV, CA state incentives for industry are limited to
    DHW applications
  • There are no credits for reductions in air pollutants, even in
    non-attainment areas
  • Natural gas prices are low
  • Industry demands rapid payback of investments
  • In high product value industries, energy is not a large
    fraction of product manufacturing costs
  • Industry is not familiar with solar thermal technology
  • Solar needs to be integrated into existing plant

Solar Power for Tomorrow's World                                     16
          ABENGOA                                  Hot water system economics


         Peak output of the solar field about 2 MWthermal (6.8 million Btu/hour)

         Estimated installed price ~ $1/Wthermal             $2.0 million

         Incentives
         • 30% federal tax credit                            $600,000
         • Depreciation (85% of system price in              $595,000
         2011 or spread over 5 years 2012+) at 35%
         combined state and federal tax rate
         CSI grant                                           $500,000
         Total Incentives                                    $1,695,000
         Net investment                                      $305,000
         Income
         Natural gas displacement ~4 therms/ft2              145,000 therms/yr
         Value ($1/therm natural gas price)                  $145,000/year




Solar Power for Tomorrow's World                                                   17
          ABENGOA                           Policy Initiatives


     • Expand the CSI-Thermal program beyond domestic hot water
       heating to processes such as steam generation and process
       heating that will help industry
     • Create more ambition goals than a total of 9 million ft2 of
       collectors by 2017 (less than the collector area of one 200 MW
       solar thermal electric plant)
     • Increase funding beyond the $108 million that is allocated for
       multi-family/commercial applications
     • Continue the program beyond 2017 if needed by market
       conditions
     • Mandates for the replacement of natural gas by renewables the
       same as for electricity or renewable energy credit purchase
       agreements


Solar Power for Tomorrow's World                                        18
ABENGOA SOLAR




                   Thank you for your time

                                   Questions?



Solar Power for Tomorrow's World                19

								
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