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NREL’s Presenter on Market Updates for Energy Efficiency Amy Hollander

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Presentation on theme: "NREL’s Presenter on Market Updates for Energy Efficiency Amy Hollander"— Presentation transcript:

1 NREL’s Presenter on Market Updates for Energy Efficiency Amy Hollander

2 Emerging Technologies for Community Scale Market Updates: Energy Upgrade Market Benefits Deep Energy Retrofits (Net Zero) Lighting HVAC Water Heating Appliances Retro-commissioning Building Energy Modeling Tools 2

3 Community Scale Energy Consumption 3

4 Utility Programs See EE as a Resource 4 Source: 2013 State Energy Efficiency Scorecard

5 Community Scale Consumption and Savings Potential Homes and commercial buildings consume 41% of U.S energy $2,000 annual, per average American energy costs, $200 to $400 is wasted from air leakage and outdated HVAC The product of COMFORT in addition to monetary savings makes energy efficiency the most valuable EERE product. 5

6 Deep Energy Retrofits Without Renewables, homes and buildings can achieve Home Energy Rating (HERS) scores in the low to mid 30s (Range is 0-150) – Double-stud walls filled with 12 inches of open-cell spray foam that yields an R-46 insulation value – Exceptional air sealing – R-10 of rigid foam insulates the basement slab while R-20 of closed cell spray foam insulates and air seals the inside of the basement walls – R-36 of spray foam insulates and air seals the rim joists – Min-split heat pumps heat and cool the interiors Adding solar PV to buildings can achieve a HERS scores as low as Source: Building America Building Technologies OfficeBuilding America Building Technologies Office

7 7 The Net Zero Energy Building

8 The Zero Energy Ready Building Increasing insulation levels Air sealing the building envelope Installing the most efficient HVAC Lighting and appliances Whole-house approach that also takes into account building durability and moisture issues Conduit, wiring, and plumbing for solar photovoltaic and water heating panels can be conveniently added while the home is under construction A zero energy-ready home is built ready for solar panels whenever the homeowner is ready to purchase them With a super-efficient home, not only will the homeowner have lower utility bills, when they are ready to install solar, they’ll need fewer panels to reach net zero, and fewer panels mean lower costs for purchase and installation. 8

9 Light Emitting Diode (LED) Today, available LED technology is about 150 lumens per watt – 800 lumens, 60 watt equivalent – 11 watt bulb cost almost $8 The Energy Department’s target is 250 lumens per watt – a 75% increase. Higher performing LEDS will help further reduce overall costs and increase lighting efficiency. Solid State lighting (SSL) can reduce electricity needs by 50% 9

10 LED Lighting Results Lighting the Way for Big Energy Savings in Los Angeles November 20, 2013 The world's largest light emitting diode (LED) conversion project to date is under way in Los Angeles, California. In the project’s first phase alone, the city retrofitted over 141,000 streetlights, reducing energy use by 63% and saving the city $7 million a year in electricity costs. The project is expected to reduce carbon emissions by 47,583 metric tons annually, which is equivalent to removing about 10,000 cars from Los Angeles roadways per year. 10

11 HVAC 32.4% of energy use is from HVAC (Heating and Cooling) – Always replace heating systems with 90% efficient units – New systems as young as 1970 are cost effective when replaced by modern 90%+ efficient systems. Buried And Encapsulated Ducts :Installing HVAC ducts in unconditioned attics causes large energy loss ranging from 10% - 45%, significantly increasing electricity bills for air conditioning. Building America researchers developed and tested a technique for insulating ducts with spray foam and burying them in attic insulation. The team’s research shows ducts installed this way in a vented attic can match the efficiency performance of ducts in conditioned spaces. 11

12 Water Heating All traditional gas water heaters offer approximately 60% efficiency. Options – Heat Pump Hot Water Heaters – Tankless or On-Demand Hot Water Heaters – Indirect or Side-arm hot water added to 90% efficient space heating unit 12

13 Heat Pump Water Heater New Heat Pump Water Heater Retrofit Heat Pump Kit Install location must Remain between 40º to 90ºF Be at least 1,000 cubic feet of air space Cool exhaust air can be exhausted to the room or outdoors. Install in a space with excess heat, such as a furnace room.

14 Tankless On-demand Hot Water Heater Heats water through heat exchangers as needed at the rate of 2 to 5 gallons per minute.

15 Indirect or Side-Arm Hot Water Heating

16 Appliances Efficiency standards for refrigerators and freezers will improve efficiency by 255 by – Will deliver more than $200 in electricity bill savings for typical consumer. – Nationally this will save $21 billion on energy through 2043 Household appliances account for about 15% of your household's energy consumption, with refrigerators, clothes washers, and clothes dryers at the top of the consumption list. 16

17 Retrocommissioning Applicable for multifamily, casinos, schools, community buildings, rec centers Retro-commissioning is a process for “tuning up” a building’s equipment to make it work as efficiently as possible without major capital investment. Retro-commissioning for buildings is a low cost way to reduce energy costs by 10% to 20%, adding comfort as a dominant non-energy benefit. 17

18 Examples of RCx Changes to a Building Enable malfunctioning controls Optimize economizer functionality Optimize schedules and optimum start Eliminate boiler short cycling Non-functional BAS allowing the building to “run wild” & equipment to function independently Dedicated IT Cooling (Casinos)

19 Building Energy Modeling Tools DOE’s Building America teams of building science experts have developed key technical tools: – 10 energy saving strategies as "top innovations" to transform the residential building industry. – Energy Modeling Software Energy Plus – Open Studio – In 2013, 130 Technical Reports on building energy innovations View a full list of Building America’s top innovations or go to Building America.gov to access an extensive collection of technical resources, tools and other solutions that improve energy performance and quality of new and existing homes and buildings.Building America.gov 19

20 Thank You & Contact Information For Technical Assistance: DOE Office of Indian Energy Website: Building America. Gov America.gov Amy Hollander 20


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