Austin Solar 2010

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Solar Photovoltaic (PV) is a solution for families in Austin combined with home Energy Efficiency improvements.

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  • Cover the entire unshaded roof with PV,
  • Cover the entire unshaded roof with PV,
  • Compact fluorescent lamps (CFL) replace incandescent lamps and save over $30 in electricity costs over the CFL's life time
  • Aluminum 6 in. Standoff, L type roof attachment, 100 mph winds, 10.8 wind load
  • Aluminum 6 in. Standoff, L type roof attachment, 100 mph winds, 10.8 wind load
  • Aluminum 6 in. Standoff, L type roof attachment, 100 mph winds, 10.8 wind load
  • Aluminum 6 in. Standoff, L type roof attachment, 100 mph winds, 10.8 wind load
  • Austin Energy is now accepting applications for residential Solar Photovoltaic (PV) Rebates. We will accept applications for commercial Solar PV Rebates starting January 1, 2010. Direct Solar Photovoltaics questions to phone: (512) 482-5346
  • Austin Solar 2010

    1. 1. A Conversation about Solar Mike Saavedra 925 639 8714 [email_address]
    2. 2. Our Discussion Today <ul><li>Current Home Assessment </li></ul><ul><ul><li>How much energy you currently use and what you are paying per kWh </li></ul></ul><ul><ul><li>Opportunity for savings with energy efficiency measures </li></ul></ul><ul><li>Choosing the best PV System </li></ul><ul><ul><li>Best value </li></ul></ul><ul><ul><li>Maximum power output </li></ul></ul><ul><li>Estimated Benefits </li></ul><ul><ul><li>Annual electric bill savings </li></ul></ul><ul><ul><li>Payback period of your PV system </li></ul></ul>example
    3. 3. <ul><li>NABCEP Certified Energy Practitioner </li></ul><ul><li>Energy Efficient Structures Specialist </li></ul><ul><li>Solar Thermal Trained </li></ul><ul><li>NEC and Industrial Safety Certified </li></ul><ul><li>Member of SEEN (Solar Energy Entrepreneurs Network) </li></ul><ul><li>Digital Media and Networking Consultant for Renewable Energy Industry </li></ul><ul><li>Construction volunteer with Habitat for Humanity of Austin </li></ul>My Background
    4. 4. Monthly Use and Charges <ul><li>kWh (kilowatt hours) </li></ul><ul><li>Charges </li></ul><ul><li>Current Use: $1557/year & 14,158 kWh </li></ul>example
    5. 5. Energy Efficiency <ul><li>Opportunities to Save </li></ul><ul><li>Energy Efficiency </li></ul><ul><ul><li>Energy Star Appliances </li></ul></ul><ul><ul><li>AC efficiency </li></ul></ul><ul><li>Home Improvements </li></ul><ul><ul><li>Solar Screens </li></ul></ul><ul><ul><li>Duct Work </li></ul></ul><ul><ul><li>Light bulb replacement </li></ul></ul>example
    6. 6. Roof Orientation 20 0 20 0 example
    7. 7. <ul><li>Options for installing PV based on your home analysis </li></ul><ul><ul><li>A best value solution </li></ul></ul><ul><ul><li>A maximum power solution </li></ul></ul><ul><li>Both designs will connect to the utility grid </li></ul><ul><li>Both options will result in savings to your monthly electricity bill </li></ul>PV System Options example
    8. 8. Option 1: Best Value 0 example
    9. 9. Option 1: Best Value 0 example <ul><li>PV Watt yearly output = 4.4 kWh </li></ul><ul><li>PV Watt yearly energy value = $483 </li></ul><ul><li>PV payback period = 8 years </li></ul><ul><li>31% of the annual energy bill </li></ul><ul><li>Suntech 175W modules </li></ul><ul><li>18 modules X 175 watts = 3.15 kW </li></ul><ul><li>Cost at $5.50/watt = $17,325 </li></ul><ul><li>Cost after 30% federal tax credit = $12,127 </li></ul><ul><li>After $2.50/watt Utility rebate = $4,252 </li></ul><ul><li>Roof pitch = 30, Azimuth = 200 </li></ul>
    10. 10. Option 2: Maximum Power 0 example
    11. 11. Option 2: Maximum Power 0 example <ul><li>BP 190W modules </li></ul><ul><li>PV Watt yearly output = 9.3 kWh </li></ul><ul><li>PV Watt yearly energy value = $1,025 </li></ul><ul><li>PV payback period = 12 years </li></ul><ul><li>66% of the annual energy bill </li></ul><ul><li>49 modules X 190 watts = 9310 watts </li></ul><ul><li>Cost at $5.50/watt = $51,200 </li></ul><ul><li>Cost after 30% federal tax credit = $35,840 </li></ul><ul><li>After $2.50/watt Utility rebate = $12,560 </li></ul><ul><li>Roof pitch = 30, Azimuth = 200 </li></ul><ul><li>NW roof pitch = 30, Azimuth = 149 </li></ul>
    12. 12. <ul><li>Installing PV can lead to significant savings on your annual electricity bill </li></ul><ul><ul><ul><li>Option 1 (best value) $483/year </li></ul></ul></ul><ul><ul><ul><li>Option 2 (maximum power) $1,025/year </li></ul></ul></ul><ul><li>With rates forecasted to increase, savings may be even greater! </li></ul>Your Estimated Savings Typical homeowner use example
    13. 13. Economic Analysis example Current Grid kWh Cost $0.11 / kWh Annual Electric Price Growth Rate 10%
    14. 14. Summary & Recommendations <ul><ul><li>All options are viable choices depending on your needs </li></ul></ul><ul><ul><li>I recommend you; </li></ul></ul><ul><ul><ul><li>Take advantage of Austin Energy rebate program </li></ul></ul></ul><ul><ul><ul><li>PV module prices are coming down </li></ul></ul></ul>example Option 1 (best value) Option 2 (max power) Cost $4,240 $12,560 Payback period 8 years 12 years Percent of bill 31% 66% Benefits <ul><li>Achieving great energy output with moderate investment </li></ul><ul><ul><li>9.3kWh provided will not </li></ul></ul><ul><ul><li>only cover 66% of your </li></ul></ul><ul><ul><li>electricity costs, but also </li></ul></ul><ul><ul><li>make you money as </li></ul></ul><ul><ul><li>electricity costs increase </li></ul></ul>Considerations <ul><ul><li>Smaller percentage of Annual </li></ul></ul><ul><ul><li>Energy Bill </li></ul></ul><ul><ul><li>West facing roof captures </li></ul></ul><ul><ul><li>about 80% of max power </li></ul></ul>
    15. 15. BACK-UP
    16. 16. Austin Energy Rebate Program example
    17. 17. Array Orientation
    18. 18. Typical PV Benefits Summary

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