Sky Harbor Airport Renewable Powerplant Project
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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.
Sky Harbor Airport Renewable Powerplant Project
- 2. 17 MEGAWATT PHOTOVOLTAIC INSTALLATION AT SKY HARBOR AIRPORT Siting Investment and value Simulation and analysis Technology Considerations and concerns Multiple benefits
- 3. ~100 acres above parking lots and atop parking structures throughout Phoenix Sky Harbor International Airport
- 4. DEMAND SAVINGS APS E-32 and E-34 rate structures 1. 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
- 5. 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
- 6. 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
- 7. TECHNOLOGY Axis Fixed tilt, latitude - 15属 = 18属 due south Inverters 179 Solectria PVI 95kW 480V Modules 60,764 Suntech 280 Watt polycrystalline solar module, STP280-24-Vb 11 modules per string 5,524 strings in parallel
- 8. 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
- 9. STORAGE CONSIDERATION Batteries Compressed air Methane production Grid-tied net metering Sky harbor usage Local substations
- 10. 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 Arizonas renewable energy efforts
Editor's Notes
- Viable sites for rooftop and parking lot solar
- Demand expense is based solely on PEAK usage. Red = currently billed amount; Blue = projected billed amount. Demand savings are the delta between Red-yellow gap and blue-green gap (reduction in overpayment). Consumption savings are the delta between red and blue.
- Rate savings is based on total annual consumption on large-load flat-rate fee schedule. 12 largest loads = ~80% of total airport consumption