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SOLARTRICITY FOR ALAMO HEIGHTS ISD, A DASH FOR SUCCESS

CPS will pay 27 cents per kilowatt for 20 years, up to 1 MW per customer. Currently, CPS charges AHISD 7 cents per kilowatt. Explore the potential earnings, different types of solar panels, and inverter options for maximum wattage per square foot. Special thanks to David McFalls, PE, Lowell Tacker, AIA, LEED AP, and O’Neill Conrad Oppelt Architects, Inc.

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SOLARTRICITY FOR ALAMO HEIGHTS ISD, A DASH FOR SUCCESS

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  1. SOLARTRICITY FOR ALAMO HEIGHTS ISD, A DASH FOR SUCCESS

  2. CPS SOLARTRICITY CPS WILL PAY 27 CENTS PER KILOWATT FOR 20 YEARS UP TO 1 MW PER CUSTOMER. CURRENTLY CPS CHARGES AHISD 7 CENTS A KILOWATT.

  3. DERATE FACTOR • Expected loss from: • DC wiring • AC wiring • Soiling • Efficiency of inverter(s) • Efficiency of solar panel (because a panel is a current source) • WEATHER FACTOR • Typical climate • Rain days • Sun days • Temperature

  4. $383,000 PER YEAR POTENTIAL EARNINGS

  5. MONOCRYSTALINE • Slices from single crystal • Better production than polycrystals because crystals are more orderly • Potentially longer life • Grown from a circle then truncated to max out panel coverage • POLYCRYSTALINE • Grown in a ribbon or block • Full panel coverage • THIN FILM • Different crystal technology such as CIGS • Typically half the power level of crystals per square foot • More wind resistant, multiple applications

  6. Photo from articlebase.com GOAL IS FOR HIGHEST WATTAGE PER SQUARE FOOT

  7. FULL GOODS SELF BALLASTED ARRAY, POLYCRYSTALINE

  8. MONOCRYSTALINE

  9. LADY BIRD JOHNSON MS, CIGS vapor deposition , photo courtesy of Gridpoint

  10. photo from Solarpowerrocks.com

  11. MULTIPLE SMALL INVERTERS • Maintain majority of system operation if inverter fails. • Off the shelf replacement • Easier installation due to smaller size • More connections required • More system complexity • Selection based on electrical requirements

  12. LARGE INVERTERS • Single or minimal points of connection. • More capacity per inverter. • Potential long lead time for parts/replacements. • Inverter goes down, whole system goes down. • Lower system complexity.

  13. Touch this you die INTERCONNECTION

  14. ROOF REPLACEMENT at HIGH SCHOOL

  15. Inverter level monitoring String level monitoring

  16. CPS OFFICE FACILITY, GREEN MOUNTAIN ROAD 6AM

  17. CPS OFFICE FACILITY, GREEN MOUNTAIN ROAD 6:20AM

  18. CPS OFFICE FACILITY, GREEN MOUNTAIN ROAD 6:45AM

  19. SOLAR MOB APPROXIMATELY 10 MINUTES BEFORE DASH

  20. CPS OFFICE FACILITY, GREEN MOUNTAIN ROAD, 6:58AM

  21. GREEN SHOES FRONT DOOR, CPS FACILITY

  22. SIGNING APPLICATION AND GETTING QUEUE NUMBER, CPS FACILITY 7:20AM

  23. SOLARTRICITY FOR ALAMO HEIGHTS ISD, A DASH FOR SUCCESSSpecial thanks to David McFalls, PEGridpoint Lowell Tacker, AIA, LEED AP O’Neill Conrad Oppelt Architects, Inc. Principal ltacker@ocoarchitects.com

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