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Soaring Heights CommunitiesFamily Housing Solar Project (at Davis-Monthan AFB)
Presented by John Karelis, Utility Manager,
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Ground Array Overview
• 3.3 mW photovoltaic (PV) system
• 20 acres land.
• 45,000 solar panels.
• 9 million+ kWh production to date
• 3 months to construct
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Ground Array Specifications
• System Size (DC kW): 3,281• First Year Energy Production:
5 Million+ kWh's• 45,000 First Solar 75 and 72.5
Watt panels positioned at 25 degrees tilt with an approximate 180 degree due south azimuth.
• Inverter: (6) Satcon PowerGate 500kW PV inverters
• Structure: Northern States Solar Mounting System
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Rooftop Systems:
• 379 PV rooftop systems operational
• 2.766mW total rooftop system size
• 4 million+ kWh production to date
• Average rooftop system size is 7kW (90 panels)
• 37,280 panels total installed on the roof systems
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What is the Value in Having Solar?
• Stabilized utility rates for the coming 15 years (solar)
• Sustainability
• Lower utility cost to free up funding for future community development
• Making use of the sun’s natural energy
• Offset more than 570 million pounds of carbon dioxide over its lifetime
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Year-to-Date Totals:
• 63% total powerfrom solar
• Solar Produced = 4,351,140 kWh(63%)
• Power Purchased from Local Utility = 2,534,921 kWh (37%)
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Primary Project Partners
1. Lend Lease, developer of Soaring Heights Communities
2. National Bank of Arizona, financier of the 3.3 MW ground-mounted system
3. Tucson Electric Power – utility partner, provided rebates, interconnection
4. SolarCity – designed, installed and maintains solar systems
5. U.S. Bancorp Community Development Corporation – financing partner for
residential rooftop solar systems
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Thank You!
SHC: The Largest Solar-Powered Community in the Continental U.S.