sky harbor airport renewable powerplant project
DESCRIPTION
A 17 MW distributed solar PV plant designed for the City of Phoenix's Sky Harbor International Airport in response to an APS RFP for RE Small Generation Resources. Modeled all financial and energy components with SAM and HOMER. Proposal would generate ~$750,000 annual savings for the City of Phoenix.TRANSCRIPT
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