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 – 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 – 9 th 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 – kWh/m2 Global Horizontal- Annual – kWh/m2

PV Technology (SunPower E20 Series) SunPower SPR-435NE-WHT-D 21.06% Efficiency 1 x 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 CO 2 /A320 aircraft(full tank) 2.09 x 10 8 lbs CO 2 /A320 aircraft (full tank) 7.64 x lbs CO 2 /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 m 2 )

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 – square meters – 2352 solar panels

System Cost Each Array project cost – 4,239, Additional project will be based off of savings from previous projects – Increasing in size and payback each year

Life Cycle Analysis $556, NPV/LCS at year 20

Payback Array #1 – $4,239, – 5.5 years Array 2-10 – Payback would dramatically decrease with added arrays

Financial Overview $4,239, 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