Sky

Harbor

Airport

Renewable

Photovoltaic

ProjectDecember 2011

17 MEGAWATT PHOTOVOLTAIC INSTALLATION AT SKY HARBOR AIRPORT

• Siting

• Investment and value

• Simulation and analysis

• Technology

• Considerations and concerns

• Multiple benefits

~100 acres above parking lots and atop parking structures throughout Phoenix Sky Harbor International Airport

DEMAND SAVINGS

APS E-32 and E-34 rate structures1. Charged for kWh used (usage)2. Charged on monthly kW peak (demand)

minimum bill is 80% of annual peak

Terminal 4 (E-34 rate structure)• $17.337/kW at peak demand

= $1,927,593.49

Terminal 4, with 50% demand reduction• $17.337/kW at peak demand

= $963,796.75

$963,797/yr savings just from shaving

peak demand

RATE SAVINGS

“12 largest loads” at Sky Harbor Airport,

FY 2011 electricity usage:

124,670,900 kWh

$10,763,808

= 8.56 cents/kWh

SHARPP produces 29,171,538 kWh annually

@ 8.56 cents/kWh from APS

= $2,497,084/yr

SHARPP cost of 29,171,538 kWh

= $1,750,292/yr

$746,792/yr (7%) savings just on

replacing APS electricity with SHARPP

COST and EFFICIENCY

SHARPP as an investment• Government-owned

• No sales tax• No property tax• No income tax

• 100% “loan” through bonds (3% interest)

• LCOE 6.00 cents/kWh(compare to 8.56 cents/kWh with APS)

Net Annual Energy 29,171,538 kWh

PPA price (LCOE) 6.00 cents/kWh

Debt Fraction 100%

kWh/kW 1,716

Total Land Area 72.82 acres

TECHNOLOGY

Axis

Fixed tilt, latitude - 15° = 18° due south

Inverters

179 Solectria PVI 95kW 480V

Modules

60,764 Suntech 280 Watt polycrystalline solar module, STP280-24-Vb

11 modules per string5,524 strings in parallel

CONSTRUCTION CONCERNS• Federal Aviation Administration

• Wildlife

• Hohokam ruins

• Pollution and noise

• City of Phoenix property

• Risk of aircraft collision / power interruption

Arizona cliff rose Lesser long-nosed bat

California least tern

STORAGE CONSIDERATION

• Batteries• Compressed air• Methane production• Grid-tied net metering

Sky harbor usage

Local substations

BENEFITS• 6.00 cents/kWh

• Mitigates peak demand rates, multiplying the savings of a solar installation

• Financially viable for the City of Phoenix

• Grid-connected

• Increases energy independence

• Less taxpayer money funding airport utilities

• Boosts local economy through jobs

• Creates positive community image

• Visible representation of Arizona’s renewable energy efforts