team mulberry
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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 - PowerPoint PPT PresentationTRANSCRIPT
Team MulberryAndrew 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– Set a 20 year plan to install arrays• Have 100% of power consumption at airport come from
solar arrays
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
• 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
Weather (cont.)
Solar Data
• Direct Nominal- Annual– 2518.6 kWh/m2
• Global Horizontal- Annual– 2117.0 kWh/m2
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)
• Satcon Technology Corporation• 2 x EQX0500US480T 480V [CEC 2012]
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
• 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
• Roof of Airport Hangers/Terminals• Horizontal plane• Little to no shade • Large area to build on (Est. 20,000 m2)
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
• 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
• $556,199.51 NPV/LCS at year 20
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
$5,000,000.00
$4,000,000.00
$3,000,000.00
$2,000,000.00
$1,000,000.00
$0.00
$1,000,000.00
$2,000,000.00
$3,000,000.00 Cash Flow in PV$ Solar Savings
LCS: $124
3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
$5,000,000.00
$4,000,000.00
$3,000,000.00
$2,000,000.00
$1,000,000.00
$0.00
$1,000,000.00
Cumulative Solar Savings
Payback
• Array #1 – $4,239,287.29– 5.5 years
• Array 2-10– Payback would dramatically decrease with added
arrays
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
• 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