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Team Mulberry. Andrew Smith, Joseph Entler, Bill Miller . Project Proposal Overview. PV array at Phoenix International Airport Goal: Using savings from current array: Reduce grid consumption by adding arrays Minimize additional space required by additional arrays

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team mulberry

Team Mulberry

Andrew Smith, Joseph Entler, Bill Miller

project proposal overview
Project Proposal Overview
  • PV array at Phoenix International Airport
  • Goal: Using savings from current array:
    • Reduce grid consumption by adding arrays
    • Minimize additional space required by additional arrays
    • Set a 20 year plan to install arrays
      • Have 100% of power consumption at airport come from solar arrays
location specifics
Location Specifics
  • Phoenix, Arizona
  • Coordinates
    • 33 degrees 26’ 03 N
    • 112 degrees 00’ 42 W
  • Largest Airport in Southwest
    • 9th largest in United States
weather
Weather
  • Near ideal climate for solar power
  • High Irradiance
  • 85% of Sunshine annually
    • 211 days of clear skies
  • Between 10 and 14.5 hours
  • Clear skies 86% of the time
solar data
Solar Data
  • Direct Nominal- Annual
    • 2518.6 kWh/m2
  • Global Horizontal- Annual
    • 2117.0 kWh/m2
pv technology sunpower e20 series
PV Technology (SunPower E20 Series)
  • SunPower SPR-435NE-WHT-D
  • 21.06% Efficiency
  • 1 x 2.067 meters
  • Roughly 392 strings of 6 panels
inverter technology satcon equinox
Inverter Technology (Satcon Equinox)
  • Satcon Technology Corporation
  • 2 x EQX0500US480T 480V [CEC 2012]
environmental considerations
Environmental Considerations
  • Environmental Impact
    • Aircraft Emissions
      • 165,319 lbs CO2/A320 aircraft(full tank)
      • 2.09 x 108 lbs CO2/A320 aircraft (full tank)
      • 7.64 x 1010 lbs CO2/year (full tank)
    • Solar Offset Emissions
      • 1.2 lbs CO2 / kWh
  • No noticeable impacts with solar when we compare to alternatives
long term goals
Long Term Goals
  • Use the 4.7 million that will be saved from the 2008 array project to build additional arrays
  • Offset the emissions of the year round aircraft traffic for the future and improve air quality
  • Have a sustainable energy source that would lower annual energy costs
  • Provide a project that can be reproduced at similar locations
building specifics
Building Specifics
  • Roof of Airport Hangers/Terminals
  • Horizontal plane
  • Little to no shade
  • Large area to build on (Est. 20,000 m2)
array details
Array Details
  • Current Array
    • 5.4 MW high efficiency
    • 16,000 solar panels
    • Offsets 1000 cars per year of emissions
  • Array size to be repeated
    • 1.9 MW high efficiency
    • 4861.6 square meters
    • 2352 solar panels
system cost
System Cost
  • Each Array project cost
    • 4,239,287.29
  • Additional project will be based off of savings from previous projects
    • Increasing in size and payback each year
life cycle analysis
Life Cycle Analysis
  • $556,199.51 NPV/LCS at year 20
payback
Payback
  • Array #1
    • $4,239,287.29
    • 5.5 years
  • Array 2-10
    • Payback would dramatically decrease with added arrays
financial overview
Financial Overview
  • $4,239,287.29
  • Analysis Period: 20 years
  • Discount Rate: 3%
  • Inflation rate: 2%
  • Nominal discount rate: 5.06%
  • Federal Income : 35%/year
  • State Income: 6.7%/year
  • Sales tax: 0% (Incentive)
  • Insurance: 0.5%
  • Incentives
    • $0.04/kWh (PTC)
    • 30% (Fed ITC)
    • 10% (State ITC)
    • $1.75/W (CBI)
    • $0.14/kWh (PTI)
conclusion
Conclusion
  • It makes financial and environmental sense to proceed with project
  • Payback is within a feasible period (5.5 years)
  • This project fits into the city’s priorities of increasing sustainable energy while savings money
  • Allows for savings to be spent on more array or sustainable projects
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