U.S. Department of Energy
Energy Efficiency & Renewable Energy
http://www.windowsvolumepurchase.org/

  • OSU Green Knowledge
  • SB221
    • 25% in 2025 energy produced in Ohio
  • MORPC
    • Easement of envelope
  • High affiances windows
    • R5 windows
  • Windows are Jobs
    • High intensive
  • GEO at the Zoo
    • May 7
  • http://www.eereblogs.energy.gov/buildingenvelope/
  • http://www.windowsvolumepurchase.org/
  • Window Rating Factors
    • U-factor
    • Solar Heat Gain Coefficient (SHGC)
    • Visible Transmittance (VT)
    • Air leakage (AL)
  • NFRC Label
    • Gives the 4 factors
  • Importance for HVWP
    • U-Factor  of .22 opera ble, .2 fixed
  • Qualifying windows
    • Typically triple pain
    • Low E coatings
    • Warm edge spacers
    • Well-designed non-metal frame, may be insulated
  • Low E Strom Windows are a great option to improve performance if storm windows are being used.
    • Good in historic preservation
  • Window comfort is 9 to 5 degrees below the room temperature.
    • Can then eliminate heating at window edge reducing HVAC cost.
  • Window requirements
    • U-factor
    • Air Leakage
    • Condensation Resistance:
      • Important, largest failure or windows.
    • Certifications
    • Warranty (yr): 20 glass / 10 non-glass
    • Minimum order: 20

AEP Programs

  • www.gridSMARTohio.org
  • Whole Building
    • Pay incentives to Design Team for modeling Commercial
      • 30% more Efficient than ASHAE 90.1 less $0.04 per kWh/year
    • Pay builders greater than Energy Star III for residential (Columbus gas also has incentives)
    • Pay rebates to home owners to improve the envelope if  in-home assessments or in-home audit
  • Custom
  • Prescriptive
    • Lighting
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