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Ian Diamond Solar PV Presentation to AIA Westchester Chapter April 22, 2010
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Ian Diamond Solar PV Presentation to AIA Westchester Chapter April 22, 2010

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Discusses Solar PV Systems and their appropriate applications, production and economic analysis for New York.

Discusses Solar PV Systems and their appropriate applications, production and economic analysis for New York.


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  • 1. Solar Power for Residential and Commercial Properties Ian Diamond Vice President of Sales ©Copyright 2010, Ian Diamond (914) 419-3134. Please contact author for permission to reproduce in part or full.
  • 2. August 14 th , 2003
    • Northeast Blackout of 2003
    • 8 States + Southeastern Canada
    • 50 Million people lost power
    • Grid Faults and Overload
  • 3. Meeting Future Electricity Load
    • Load Growth expected of 1.05% annually to 2030
    • Increase electricity generation
      • Power Plants
        • Clean Coal
        • Nuclear
      • Renewable Energy
        • Wind
        • Solar
  • 4. Why Solar Power?
    • Increasing Energy/Electricity Demands
    • Unlimited Resource. cf: fossil fuels
    • Distributed Generation. cf: Transmission costs and infrastructure
    • Maximum production during peak demand
    • Helps Utility Energy Management
    • Clean. cf: Oil, Clean Coal, Nuclear
    • NIMBY or YOYR (Yes, On Your Roof)
    • Eventual Unsubsidized Grid Parity
  • 5. What is Solar Energy?
    • Solar Power
      • Photo-Voltaic (PV)
        • Producing electricity from light
    • Solar Thermal (Solar Hot Water)
      • Utilizing energy from heat
  • 6. Mounting Options
    • Rooftop
      • Flush Mounted, Affixed (typical residential)
      • Tilt-mounted, affixed (flat roof)
      • Tilt-mounted, ballasted (typical flat roof)
    • Ground
      • Ground or pole-mount
      • Ballasted (paved areas)
    • Car Port Structure
      • Parking lots
  • 7. Rooftop Preferences
    • Facing true south (+/- 60°)
    • Pitch: 0°- 45° (Ideal: 30°)
    • No obstructions
      • Off roof:
        • no trees, taller buildings, higher walls
      • On-roof:
        • Parapet walls, bulkheads, HVAC equipment, vents
    • Roof Life: 15+ years
    • No structural load issues
  • 8. Typical System
    • Crystalline Panels
    • Roof mounted / Ground mount
    • Grid-tied (no batteries)
    • Fixed mounting (no rotation)
    • Net Metered
    • Distributed Generation (On-site)
  • 9. System Sizing
    • Flush Roof Mount
      • Example: residential pitched roof south facing, unobstructed, 500sf
      • 10W / square foot
      • = 5kW Solar PV system
    • Tilt Roof Mount
      • Example: commercial flat roof unobstructed, 6000sf
      • 8W / square foot
      • = 48kW Solar PV system
  • 10. Production Value
    • 1kW Solar PV produces approximately 1200 kWh per year
      • 5kW = 6,000 kWh/year
      • 25kW = 30,000 kWh/year
    • System Life: 30+ years
    • Avoided Electricity Cost
      • Con Ed Westchester @ $0.18/kWh
      • NYSEG @ $0.14/kWh
      • Escalating electricity costs > 5% annually
  • 11. System Cost
    • Variables
      • System Size
      • Location
      • Building Height
      • Flush/Tilt;
      • Ballasted/Affixed
    • Residential: $7.00/Watt
    • Commercial: $5.00-$6.00/Watt
  • 12. Incentives
    • Federal
      • 30% of Gross System Cost
        • Commercial: Investment Tax Credit
          • 2010 available as a Grant.
        • Residential: Personal Tax Credit
    • State – New York
      • NYSERDA Rebate
        • $1.75/Watt up to 5kW Residential
        • $1.75/Watt up to 50kW Commercial
      • LIPA Rebate
        • $2.50/Watt up to 5kW Residential
        • $2.50/Watt up to 50kW Commercial, &
        • $1.00/Watt 50kW to 100kW
  • 13. Incentives (cont’d)
    • State – New York
      • Personal Tax Credit
        • 25% of Net System Cost (after Rebate) up to $5,000
    • New York City
      • Property Tax Abatement
        • 35% of Net System Cost (after Rebate & Grant) – 2010
        • 20% of Net System Cost (after Rebate & Grant) – 2011-2012
    • Municipal
      • Property Assessed Clean Energy (PACE) Financing
  • 14. Example: 5kW Residential System - NYC Gross System Cost ($7/W) $35,000 NYSERDA Rebate ($1.75/W) -$8,750 Federal Tax Credit (30%) -$7,875 State Tax Credit (25%, $5,000 cap) -$5,000 NYC Property Tax Abatement (35%) -$9,187 Total Net Cost after incentives $4,188 Annual avoided electrical costs (@ $0.24/kWh) $1,440
  • 15. Example: 5kW Residential System Westchester Gross System Cost ($7/W) $35,000 NYSERDA Rebate ($1.75/W) -$8,750 Federal Tax Credit (30%) -$7,875 State Tax Credit (25%, $5,000 cap) -$5,000 Total Net Cost after incentives $13,375 Annual avoided electrical costs (@ $0.20/kWh) $1,200
  • 16. Example: 25kW Commercial System - NYC Gross System Cost ($6/W) $150,000 NYSERDA Rebate ($1.75/W) -$43,750 Federal Tax Credit (30%) -$31,875 NYC Property Tax Abatement (35%) -$37,187 Total Net Cost after incentives $37,188 Annual avoided electrical costs (@ $0.22/kWh) $6,600 + 5 yr MACRS Depreciation
  • 17. Example: 25kW Commercial System - Westchester Gross System Cost ($6/W) $150,000 NYSERDA Rebate ($1.75/W) -$43,750 Federal Tax Credit (30%) -$31,875 Total Net Cost after incentives $74,375 Annual avoided electrical costs (@ $0.18/kWh) $5,400 + 5 yr MACRS Depreciation
  • 18. Technology & Future Improvements
    • Mature technology of 30+ years development and production
    • Small incremental improvements
      • Smaller Tolerances
      • Inverter efficiency improved
    • Improvements & Applications
      • Wider applications
        • Thin-film
          • Part of roof membrane
          • Solar walls
        • Building Integrated PV (BIPV) – solar shingles
        • Transparent panels
        • Car port structures
  • 19. Maintenance
    • Occasional cleaning (bi-annual)
    • Remote Performance Monitoring
    • No moving parts
    • Annual system check
      • Electrical wiring
      • Inverter
      • Panels
    • 30+ year system life
    • Inverter replacement (15 years ?)
    • Roof membrane accessible
  • 20. Solar PV - Conclusion
    • Solar PV is extremely important component to help us meet increasing global electricity needs
    • Solar Distributed Generation (On-site, Behind the meter) provides localized electricity – no extra burden on transmission infrastructure
    • Solar utilizes underused property (rooftops, parking lots, etc) to provide on-site electricity
    • Increasing importance in new construction and existing properties
  • 21. Questions? Ian Diamond (914) 419 3134 [email_address] ©Copyright 2010, Ian Diamond (914) 419-3134. Please contact author for permission to reproduce in part or full.

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