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presented to the EPAC on December 9, 2005

Plans for Commercial Building Benchmarking R&D in 2006 Martha Brook California Energy Commission PIER Buildings Program. presented to the EPAC on December 9, 2005. Collaboration on Benchmarking Tools with U.S. EPA.

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presented to the EPAC on December 9, 2005

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  1. Plans for Commercial Building Benchmarking R&D in 2006Martha BrookCalifornia Energy CommissionPIER Buildings Program presented to the EPAC on December 9, 2005

  2. Collaboration on Benchmarking Tools with U.S. EPA Goal:Improve the Energy Star Portfolio Manager’s representation of California buildings Approach: • Work with U.S. EPA and ORNL to incorporate recent CA bldg characterization data (CEUS) into Portfolio Manager’s benchmarking models • EPA and ORNL will also be incorporating new national building characterization data (CBECS) into Portfolio Manager • New building models will be released in updates to Portfolio Manager throughout 2006

  3. Action-oriented Benchmarking Goal:Provide energy benchmarks that encourage energy efficiency improvements Approach: • Work with LBNL to leverage the CEUS data and build complementary benchmarking tools for CA • Develop data link with Portfolio Manager to exchange benchmarking information • CA benchmarking server will provide additional comparisons and insights… Find out more about your California building

  4. Proposed Action-Oriented Benchmarking Tool California has a number of simple benchmarking tools…. …Future end-use benchmarking tools can identify specific retrofit actions to improve performance

  5. Proposed Action-Oriented Benchmarking Tool • Web-based • Based on new California End Use Survey data • Data-sharing with other benchmarking tools and Energy Information Systems • Benchmarks performance of building end-uses • Compares your building to typical and good practice • Drills down to identify retrofit and other opportunities to improve your building’s performance

  6. Building Type • Climate Zone • Floor Area • Energy Use 1. Basic Energy Use Intensity (EUI) 2. Default End Uses 3. Calculate your building’s end uses 4. Retrofit Options & Results • Specify your building’s end-uses • Detailed end-use characteristics • Select retrofit options by end use Action-Oriented Benchmarking: Benchmarking to Retrofit Options

  7. 1. Energy Use Intensities Compare your building’s energy use intensities (EUIs) to typical and good practice cases: • By type and climate • By fuel (electricity and natural gas) or whole building • kBtu/ft2-yr site or source energy units

  8. 2. Default End-Uses Review default end-use distributions for typical and good practice: • By fuel (electricity and natural gas) • Specify your building’s end uses: • Lighting • Space Heating and Cooling • Heating • Cooling • Fans and Ventilation • Water Heating • Miscellaneous • Office Equipment • Refrigeration • Cooking • Outdoor Lighting • Other Misc.

  9. 3. Calculate End-Use Energy – Lighting Use simplified methods to estimate end-use consumption: Lighting EUI (kBtu/ft2-year) = (52 weeks/year) x (Ho x Co + (1-Ho)xLu) x Df x W) x (kW/1000W) x (3.412 kBtu/kW)

  10. 4. Select Retrofits – Indoor Lighting • Possible Lighting Retrofits: • Lamp Replacement (T-12 to T-8) • Hi-efficiency Ballast • Incandescent to CFL conversion • Occupancy Sensors • Lighting Controls • Rezoning

  11. Before After 4. Evaluate Retrofits

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