Soaring Heights CommunitiesFamily Housing Solar Project (at Davis-Monthan AFB)

Presented by John Karelis, Utility Manager,

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

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

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

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

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%)

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

Thank You!

SHC: The Largest Solar-Powered Community in the Continental U.S.