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What Price (Savings) Energy Transformation: Energy Efficiency in Buildings

What Price (Savings) Energy Transformation: Energy Efficiency in Buildings. Harvey M. Sachs, Ph.D. (with help from Nadel, Elliott, etc.) February 29, 2008 www.aceee.org. Some Resources. Supply Curve for Energy Efficiency: The McKinsey work.

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What Price (Savings) Energy Transformation: Energy Efficiency in Buildings

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  1. What Price (Savings) Energy Transformation:Energy Efficiency in Buildings Harvey M. Sachs, Ph.D. (with help from Nadel, Elliott, etc.) February 29, 2008 www.aceee.org

  2. Some Resources • Supply Curve for Energy Efficiency: The McKinsey work. • http://www.mckinsey.com/clientservice/ccsi/pdf/US_ghg_final_report.pdf

  3. Big Ideas • Efficiency vs. Conservation – need both • Cost of Saved Energy – Most available at <cost of electricity. • There are no silver bullets – It’s all small smart pellets. • The Efficiency Mine is still producing -- Emerging technologies are still cheap when commercialized.

  4. Energy Efficiency’s Past Success Source: Art Rosenfeld, CEC

  5. The Energy Horizon: Looking Backwards First Source: Rosenfeld, 2003: RESNET Presentation

  6. Lessons from McKinsey

  7. Lessons from McKinsey

  8. Lessons from McKinsey

  9. Lessons from McKinsey

  10. ACEEE Estimates of Savings from Federal Standards

  11. Next Steps for Regional A.C: Concerns and Solutions Hot-Dry Climates Hot-Humid Climates • Concerns: • Energy consumption and cost correlate better with EER values than SEER values • Concerns: • Humidity control • The mold monster A regional SEER value, determined with bin data for a Southwest climate, could solve this problem while also providing a fairer comparison of single and multi-speed systems than the steady state EER Provide an indication of moisture removal capability at moderate temperatures. Consider 75F dry bulb and 63F wet bulb (52% RH) as preferred test point. Note: Contours represent annual cooling load hours

  12. NREL’s 6 buildings Study* • Intensive intervention at design stage • Monitored performance • Results: • 42% average savings, 25% - 62% range • Lessons: • PV produced less than projected • Buildings operated poorly, high plug loads, poor shell • Longer operating hours. *Lessons Learned from Field Evaluation of Six High-Performance Buildings. http://www.nrel.gov/docs/fy04osti/36290.pdf

  13. US Housing • Predominantly • Single family • Leaky forced air thermal distribution • Poor quality shells • Low spatial density. • 250% growth in size since 1950. New homes median ~250 m2 now • Decline in people/household • Solutions? • D-9 renovation?

  14. External Static Pressure The SEER test method underestimates the frictional resistance of duct work. Current: Recommended:

  15. Florida: A Case Study for Policy* • One of the most rapidly growing states in country • 18 million people (6% of USA) • Electric and natural gas demand projected to grow rapidly over next 15 years: • Electric consumption grows 39% • Peak electric demand grows over 40% • Concerns emerging about adequacy of fuel supply and electric capacity *Potential for Energy Efficiency and Renewable Energy to Meet Florida's Growing Energy Demands. ACEEE Report A072, from www.aceee.org.

  16. Efficiency Policies • Utility savings target • More stringent building codes • Public buildings program • Improved CHP policies • State appliance & equipment standards • Advanced building program • Industrial competitiveness initiative • Expanded RD&D efforts • Short-term public ed & rate incentives

  17. Efficiency and Renewable Resources 2023 EE&RE Resources = 99 Billion kWh

  18. Summer Peak Demand

  19. Economic Impact of Energy Efficiency

  20. Conclusions • Energy efficiency can meet most of the state’s growing electricity needs over next 15 years • Efficiency is the low-cost energy resource available to the state • Efficiency saves consumers money and creates jobs • Efficiency reduces state-wide emissions

  21. Efficiency: The Cheapest Resource Light Water Nuclear Reactor Coal Gassification w/ Carbon Sequestration Cost of Saved Energy $/kWh Wind Biomass Natural Gas Plant Pulverized Coal Cost of saved energy for 72 emerging energy-efficient technologies, in order of increasing CSE. Modified from ACEEE Report A042, available at www.aceee.org

  22. Conclusions • Energy Efficiency remains the most cost-effective source of new energy services. • And the cleanest. • And the key to a low-carbon future.

  23. Contact Information Harvey Sachs Director, Buildings Program ACEEE 1001 Conn. Ave, NW, Suite 801 Washington, DC 20036 202-429-8873 hsachs@aceee.org

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