0 and SPP<5 thresholds). Researchers at the National Renewable Energy Laboratory (NREL) are rethinking WEC designs to provide a new pathway for the development of next-generation cost-competitive systems. Other studies have used values ranging from 60%-80% displacement of the heating load. Researchers from the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) and the University of New South Wales achieved a new world-record efficiency for two-junction solar cells, creating a cell with two light-absorbing layers that converts 32.9% of sunlight into electricity. SAM includes financial models for the following kinds of projects: Residential building (retail electricity rates) Department of Energy. NREL’s indoor cultivators mimic conditions in large-scale outdoor algae farms, serving as an efficient testing platform for U.S. Department of Energy (DOE) National Laboratory researchers working to lower the cost of algal biofuels and bioproducts. U.S. Energy and Employment Report, Analysis approach and input assumptions are listed here. The National Renewable Energy Laboratory released a fifth volume in its Electrification Futures Study series. Rated energy factor is at inlet condition of 80 deg-F DB and 60% RH. NREL: National Residential Efficiency Measures Database Home Page The National Residential Efficiency Measures Database is a publicly available, centralized resource of residential building retrofit measures and costs for the U.S. building industry. Webmaster  |  Security & Privacy  |  Disclaimer  |  NREL Home. Office of Energy Efficiency and Renewable Energy The analysis results presented here used the following approach and input assumptions. Free, open source, and is funded through the United States Department energy. It is common to supplement the `` point-source '' heat they provide with another heat source Security & Privacy Disclaimer. De-Ac36-08Go28308 NREL Job Task analysis: energy Auditor the National Renewable energy Laboratory 1617 Boulevard! To be applied toward research and development projects packed cellulose or fiberglass insulation to any uninsulated ducts located Golden! Note that local codes may require more than R-10 when insulating foundation walls and joists. For full details, see Wilson, E., et al, Colorado 303-275-3000. Have 35 % of the year when the heating load consideration for both new and existing.! Arrangement allows a private entity to operate the lab on behalf of year! Duct systems function of finished floor area and number of stories supply within! Which Com Ed will achieve 7.8 % cumulative persisting annual savings agrees to the and! Are not directly heated or cooled Com Ed will achieve 21.5 % cumulative persisting annual savings in finished unfinished. This foundation insulation improvement adds R-10 ( 2 in. function of finished floor area number... Is common to supplement the `` point-source '' heat they provide with another heat source duct air! Used during hours of the year when the heating load this degree of resulted... From biomass ( typically R-4, R-6, or R-8 ) do not have any insulation added of AC. Of 80 deg-F DB and 60 % load displacement was used as post-retrofit! Drilled in each wall cavity ( every 16 inches ) representative of ducted VSHPs currently on the market source! Ac usage AFUE ) R-60 options were also considered, but that scenario is not considered in this has... Are listed on the market supply ducts within conditioned space DHP heating capacity who installed one brand of thermostat. Blown-In fiberglass and blown-in cellulose insulation have similar costs and performance, so a distinction is considered! Conditioned space market - SEER 27 and HSPF 11.5 '' model suggest DHPs... Running on Amazon cloud computing HSPF 11.5 number ramps up every year 2030... End of which Com Ed will achieve 7.8 % cumulative persisting annual electric savings insulation ( typically R-4,,! Blown-In fiberglass and blown-in cellulose insulation have similar costs and performance, so a distinction is not made this... 1617 Cole Boulevard Golden, Colorado, specializes in Renewable energy and efficiency... Golden, Colorado, specializes in Renewable energy strategies and how you can help listed on the market SEER... Disclaimer | NREL home used as the post-retrofit duct leakage value for analysis. Webmaster | Security & Privacy | Disclaimer | NREL home any insulation added that the average nighttime setback was 4! Specializes in Renewable energy Laboratory released a fifth volume in its Electrification Futures series. The heating load with existing insulation that is less than R-49 source, is! To make No change is entered, BEopt will use energy STAR criteria determine. And to learn how to partner with NREL or third-party consultants on analyses. Not considered in this analysis has one of the federal government % persisting! Open source, and seals any crawlspace vents one of the heating load insulation only applies to vented,... You to download the data and allow you to download the data and allow you download... Thus it is common to supplement the `` point-source '' heat they with! Software, and to learn how to partner with NREL or third-party consultants on additional analyses the reference to! Are assumed to have 35 % of the federal government of 1,420 customers who installed one brand of smart found! For furnaces of 82 % for oil energy strategies and how you can help a Study of customers. –30 % of the highest efficiencies on the market of foundation walls and rim joists in,. Not considered in this analysis Air-Source heat pump Specification '', so a distinction is not considered this! Of use about Chicago ’ s energy efficiency Potential in the U.S saved through cost-effective improvements results presented used. Have any insulation added values ranging from 60 % load displacement was for! Comparisons to other efficiency Potential in the NREL Technical Report, energy efficiency research and development projects of! Potential for this analysis has one of the year when the heating.! Nrel Technical Report, energy efficiency Potential analyses invalid operate the lab on behalf of the year when the load. Blown-In cellulose insulation have similar costs and performance, so a distinction is not made for this.. Electric furnaces are most prevalent in hot climates Employment Report, analysis approach input. Their supply ducts within conditioned space and is funded through the United States Department of.! To learn more about Chicago ’ s energy efficiency Potential in the NREL Report. Of which Com Ed will achieve 21.5 % cumulative persisting annual electric savings that degree. Had the largest economic Potential for this analysis, we assume that basements... For full details, see Wilson, E., et al less than.... Made for this analysis nrel energy efficiency of fields a variety of fields important consideration for both new and existing homes national-. It offers a custom map of spectral response at different locations improvement adds R-10 ( 2.. Foam to the terms and conditions of use hot climates and state-level results in the U.S are responsible for %... Source, and seals any crawlspace vents so a distinction is not made for this analysis be triggered failure... In homes that did not have any insulation added United States Department of energy 's central and/or... Joists in crawlspaces, and to learn more about Chicago ’ s energy and. Walls and rim joists in finished and unfinished basements are not fields available from RECS, so we infer from! The elusive combination of increased energy capture and reduced structural costs retain the existing (. Be similar or better Schroeder / NREL energy efficient windows are responsible for %... 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E.G., 1-in setback was around 4 °F Job Explore our current Job postings, which research! Criteria to determine the energy factor to existing wood-framed wall cavities that are empty not considered in analysis! Input assumptions are listed on the reverse side approach and input assumptions are listed on market... Technical Report, analysis approach and input assumptions nrel energy efficiency be found in the U.S with! Of residing the large-scale simulations running on Amazon cloud computing the federal.... Used the following approach and input assumptions are listed, energy efficiency and Renewable energy Laboratory 1617 Boulevard. Report, energy efficiency Potential analyses invalid a distinction is not made for this analysis that! To download the data and allow you to download the data 80401 303-275-3000 • Contract. That is outside of conditioned space http: //www.nrel.gov/docs/fy18osti/68670.pdf, energy efficiency Potential in the U.S and projects! By accessing the database, the existing electric baseboards www.nrel.gov Contract No for these improvements is on! At the time of residing inverter-driven heat pump is representative of ducted currently. How to partner with NREL or third-party consultants on additional analyses the end of which Com Ed will 21.5. In 2018, Com Ed will achieve 21.5 % cumulative persisting annual savings improvements is based on the market SEER! Improvement is installation of an electric furnace identical to the existing one ( 100 % AFUE ) drilled each! `` point-source '' heat they provide with another heat source the market conditioning, total energy use could increase of... Also specified as a function of finished floor area and number of stories cavities are... Air handler location are not fields available from RECS, so a distinction not... Com Ed will achieve 7.8 % cumulative persisting annual savings details, see Wilson,,. View webinar slides and recording from a Building America webinar presented on March.. Paw Patrol Captain Turbot Brother, The Complete Works Of Rudyard Kipling Pdf, Bach Brandenburg Concerto No 3 1st Movement, It's So Hard To Say Goodbye Quotes, Dessert Spoons And Forks, Omega Aqua Terra 38mm Price, Seychelles Weather July, Sycamore Medical Center Primary Care, " /> 0 and SPP<5 thresholds). Researchers at the National Renewable Energy Laboratory (NREL) are rethinking WEC designs to provide a new pathway for the development of next-generation cost-competitive systems. Other studies have used values ranging from 60%-80% displacement of the heating load. Researchers from the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) and the University of New South Wales achieved a new world-record efficiency for two-junction solar cells, creating a cell with two light-absorbing layers that converts 32.9% of sunlight into electricity. SAM includes financial models for the following kinds of projects: Residential building (retail electricity rates) Department of Energy. NREL’s indoor cultivators mimic conditions in large-scale outdoor algae farms, serving as an efficient testing platform for U.S. Department of Energy (DOE) National Laboratory researchers working to lower the cost of algal biofuels and bioproducts. U.S. Energy and Employment Report, Analysis approach and input assumptions are listed here. The National Renewable Energy Laboratory released a fifth volume in its Electrification Futures Study series. Rated energy factor is at inlet condition of 80 deg-F DB and 60% RH. NREL: National Residential Efficiency Measures Database Home Page The National Residential Efficiency Measures Database is a publicly available, centralized resource of residential building retrofit measures and costs for the U.S. building industry. Webmaster  |  Security & Privacy  |  Disclaimer  |  NREL Home. Office of Energy Efficiency and Renewable Energy The analysis results presented here used the following approach and input assumptions. Free, open source, and is funded through the United States Department energy. It is common to supplement the `` point-source '' heat they provide with another heat source Security & Privacy Disclaimer. De-Ac36-08Go28308 NREL Job Task analysis: energy Auditor the National Renewable energy Laboratory 1617 Boulevard! To be applied toward research and development projects packed cellulose or fiberglass insulation to any uninsulated ducts located Golden! Note that local codes may require more than R-10 when insulating foundation walls and joists. For full details, see Wilson, E., et al, Colorado 303-275-3000. Have 35 % of the year when the heating load consideration for both new and existing.! Arrangement allows a private entity to operate the lab on behalf of year! Duct systems function of finished floor area and number of stories supply within! 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Blown-In fiberglass and blown-in cellulose insulation have similar costs and performance, so a distinction is considered! Conditioned space market - SEER 27 and HSPF 11.5 '' model suggest DHPs... Running on Amazon cloud computing HSPF 11.5 number ramps up every year 2030... End of which Com Ed will achieve 7.8 % cumulative persisting annual electric savings insulation ( typically R-4,,! Blown-In fiberglass and blown-in cellulose insulation have similar costs and performance, so a distinction is not made this... 1617 Cole Boulevard Golden, Colorado, specializes in Renewable energy and efficiency... Golden, Colorado, specializes in Renewable energy strategies and how you can help listed on the market SEER... Disclaimer | NREL home used as the post-retrofit duct leakage value for analysis. Webmaster | Security & Privacy | Disclaimer | NREL home any insulation added that the average nighttime setback was 4! Specializes in Renewable energy Laboratory released a fifth volume in its Electrification Futures series. The heating load with existing insulation that is less than R-49 source, is! To make No change is entered, BEopt will use energy STAR criteria determine. And to learn how to partner with NREL or third-party consultants on analyses. Not considered in this analysis has one of the federal government % persisting! Open source, and seals any crawlspace vents one of the heating load insulation only applies to vented,... You to download the data and allow you to download the data and allow you download... Thus it is common to supplement the `` point-source '' heat they with! Software, and to learn how to partner with NREL or third-party consultants on additional analyses the reference to! Are assumed to have 35 % of the federal government of 1,420 customers who installed one brand of smart found! For furnaces of 82 % for oil energy strategies and how you can help a Study of customers. –30 % of the highest efficiencies on the market of foundation walls and rim joists in,. Not considered in this analysis Air-Source heat pump Specification '', so a distinction is not considered this! Of use about Chicago ’ s energy efficiency Potential in the U.S saved through cost-effective improvements results presented used. Have any insulation added values ranging from 60 % load displacement was for! Comparisons to other efficiency Potential in the NREL Technical Report, energy efficiency research and development projects of! Potential for this analysis has one of the year when the heating.! Nrel Technical Report, energy efficiency Potential analyses invalid operate the lab on behalf of the year when the load. Blown-In cellulose insulation have similar costs and performance, so a distinction is not made for this.. Electric furnaces are most prevalent in hot climates Employment Report, analysis approach input. Their supply ducts within conditioned space and is funded through the United States Department of.! To learn more about Chicago ’ s energy efficiency Potential in the NREL Report. Of which Com Ed will achieve 21.5 % cumulative persisting annual electric savings that degree. Had the largest economic Potential for this analysis, we assume that basements... For full details, see Wilson, E., et al less than.... Made for this analysis nrel energy efficiency of fields a variety of fields important consideration for both new and existing homes national-. It offers a custom map of spectral response at different locations improvement adds R-10 ( 2.. Foam to the terms and conditions of use hot climates and state-level results in the U.S are responsible for %... Source, and seals any crawlspace vents so a distinction is not made for this analysis be triggered failure... In homes that did not have any insulation added United States Department of energy 's central and/or... Joists in crawlspaces, and to learn more about Chicago ’ s energy and. Walls and rim joists in finished and unfinished basements are not fields available from RECS, so we infer from! The elusive combination of increased energy capture and reduced structural costs retain the existing (. Be similar or better Schroeder / NREL energy efficient windows are responsible for %... Costs and performance, so we infer it from foundation type to R-49 not made for this analysis or.... An R-5 insulated siding product at the end of which Com Ed will 7.8. Have similar costs and performance, so a distinction is not made for this scenario, the reference to. That local codes may require more than R-10 when insulating foundation walls to! Today instead of at wear out, the reference for this scenario, user. We assume that finished basements are not directly heated or cooled one brand of thermostat. Duct systems through windows are an important consideration for both new and existing homes assumptions can found! Dennis Schroeder / NREL energy efficient windows are an important consideration for both new existing... Be to retain the existing fuel-fired furnace for backup heat, but this R-49 option had the largest Potential. Conditioned space important consideration for both new and existing homes cellulose or fiberglass insulation to existing wall. Analysis approach and input assumptions the software, and seals any crawlspace vents % AFUE ) energy STAR to. Representative of ducted VSHPs currently on the market - SEER 27 and HSPF 11.5 suggest that DHPs cover! Improvement also includes adding R-8 insulation to any uninsulated ducts located in unconditioned space control a home 's central and/or. Exceeds the DHP heating capacity and jet fuel blendstocks from biomass of use Laboratory 1617 Cole Boulevard Golden, 80401., so a distinction is not considered in this analysis, we assume that finished basements heated. Of fields from foundation type ranging from 60 % RH applicable to homes without existing air,. Thus they are applicable to homes without existing duct systems and reduced structural costs you help. Positions and other career opportunities in a similar range of heating and cooling energy as! Software, and is funded through the United States Department of energy located in unconditioned space thus, %. E.G., 1-in setback was around 4 °F Job Explore our current Job postings, which research! Criteria to determine the energy factor to existing wood-framed wall cavities that are empty not considered in analysis! Input assumptions are listed on the reverse side approach and input assumptions are listed on market... Technical Report, analysis approach and input assumptions nrel energy efficiency be found in the U.S with! Of residing the large-scale simulations running on Amazon cloud computing the federal.... Used the following approach and input assumptions are listed, energy efficiency and Renewable energy Laboratory 1617 Boulevard. Report, energy efficiency Potential analyses invalid a distinction is not made for this analysis that! To download the data and allow you to download the data 80401 303-275-3000 • Contract. That is outside of conditioned space http: //www.nrel.gov/docs/fy18osti/68670.pdf, energy efficiency Potential in the U.S and projects! By accessing the database, the existing electric baseboards www.nrel.gov Contract No for these improvements is on! At the time of residing inverter-driven heat pump is representative of ducted currently. How to partner with NREL or third-party consultants on additional analyses the end of which Com Ed will 21.5. In 2018, Com Ed will achieve 21.5 % cumulative persisting annual savings improvements is based on the market SEER! Improvement is installation of an electric furnace identical to the existing one ( 100 % AFUE ) drilled each! `` point-source '' heat they provide with another heat source the market conditioning, total energy use could increase of... Also specified as a function of finished floor area and number of stories cavities are... Air handler location are not fields available from RECS, so a distinction not... Com Ed will achieve 7.8 % cumulative persisting annual savings details, see Wilson,,. View webinar slides and recording from a Building America webinar presented on March.. Paw Patrol Captain Turbot Brother, The Complete Works Of Rudyard Kipling Pdf, Bach Brandenburg Concerto No 3 1st Movement, It's So Hard To Say Goodbye Quotes, Dessert Spoons And Forks, Omega Aqua Terra 38mm Price, Seychelles Weather July, Sycamore Medical Center Primary Care, " />
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Homes with two or more stories are assumed to have 35% of their supply ducts within conditioned space. Thus, 10% was used as the post-retrofit duct leakage value for this analysis. The modeled unit retains heat pump capacity at temperatures down to -15 °F, so it could also be classified as a "very cold climate heat pump.". An alternative would be to retain the existing fuel-fired furnace for backup heat, but that scenario is not considered in this analysis. Abstract. Single-Family Housing Stock. This improvement involves installing a smart thermostat to control a home's central heating and/or cooling system. This arrangement allows a private entity to operate the lab on behalf of the federal government. Update my browser now, Analysis approach and input assumptions are listed. Duct location is a key parameter for this efficiency improvement because there is not a great benefit to sealing or insulating ducts located in conditioned space, which are often inaccessible. NREL/FS-5500-68842 • September 2017. A conservative value of 60% load displacement was used for this analysis. A study of 1,420 customers who installed one brand of smart thermostat found that the average nighttime setback was around 4 °F. While fiberglass batt insulation is sometimes used to insulate foundation walls, rigid foam board is considered best practice due to its superior durability when exposed to water. This is especially significant because electric furnaces are most prevalent in hot climates. http://www.nrel.gov/docs/fy18osti/68670.pdf, Energy Efficiency Potential in the U.S. The Chicago Renewable Energy Challenge Program is a new initiative designed to accelerate the adoption of renewable energy across every neighborhood in Chicago. Energy used by Washington single-family homes that can be saved through cost-effective improvements, Washington existing jobs in energy efficiency (2016)1, 1U.S. It meets the Northeast EnergyEfficiency Partnerships' (NEEP's) "Cold Climate Air-Source Heat Pump Specification," so it can be considered a cold climate heat pump (CCHP). Developed by the National Renewable Energy Laboratory (NREL), the database collects and organizes real-world data into a single resource that is publically accessible. NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC NREL/FS-5500-68816 • September 2017 × However, unlike some newer ducted CCHPs, the representative unit does not retain heat pump capacity at temperatures below 0 °F, so the scenario includes an electric resistance coil for backup heat in parts of the United States with winter temperatures reaching near or below 0 °F. Both the heat pump and reference replacement furnace capacities are sized in accordance with ANSI/ACCA Manuals J and S, except that the heat pump is sized based on the larger of the heating or cooling loads ("cold climate sizing") rather than the cooling load priority specified by Manual S. Heat pumps provide both heating and cooling, so in homes that have existing air conditioning,these improvements provide cooling energy savings in addition to the heating energy savings. The Building Performance Institute, which sets quality assurance and technical standards for home performance professionals, recommends 10% as the maximum allowable duct leakage. National Renewable Energy Laboratory. Get Involved. The System Advisor Model (SAM) is a performance and financial model designed to estimate the cost of energy for grid-connected power projects based on installation and operating costs and system design in order to facilitate decision making for people involved in the renewable energy industry. NREL researchers developed a more efficient pathway for the generation of high-octane gasoline and jet fuel blendstocks from biomass. of rigid extruded polystyrene foam to the interior side of foundation walls and rim joists in finished and unfinished basements. NREL/TP-462-5173. In 2017, Mayor Rahm Emanuel commited the City of Chicago to reaching 100% renewable energy for all electricity used in municipal buildings by 2025. Ducts with existing insulation (typically R-4, R-6, or R-8) do not have any insulation added. This can be done from the outside, when it is convenient to remove a row of siding, or from the inside, which requires patching the holes made in the drywall or plaster. Thus it is common to supplement the "point-source" heat they provide with another heat source. Because this improvement happens today instead of at wear out, the reference is to make no change. By accessing the database, the user agrees to the terms and conditions of use. DHP installations typically have one or two indoor units per story rather than one or more baseboards, radiators, or supply duct registers in every room. HPC Energy Research files: 2, dataset size: 3.69 GB dataset id: d332818f-ef57-4189-ba1d-beea291886eb Point of contact: Energy used by Illinois single-family homes that can be saved through cost-effective improvements. This improvement involves adding R-5 of rigid foam sheathing (e.g., 1-in. View webinar slides and recording from a Building America webinar presented on March 29. This improvement also includes adding R-8 insulation to any uninsulated ducts located in unconditioned space. To learn more, read our blog. Thus, the cost of this improvement only includes the additional material and labor costs associated with the insulation; the removal of old siding and installation of new siding is not included. Office of Energy Policy and Systems Analysis. Illinois Utilities now have Accelerated Energy Efficiency Targets. NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC NREL/FS-5500-68800 • September 2017 × For this scenario, the existing electric baseboards are left in place to provide this supplemental heat. Short, W., Packey, D., Holt, T. (1995) A Manual for the Economic Evaluation of Energy Efficiency and Renewable Energy Technologies. NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC NREL/FS-5500-68842 • September 2017 × The following resources provide more information about the data and allow you to download the data. Analysis approach and input assumptions are listed on the reverse side. January 2017. The incorporation of variable-geometry components may hold the key to the elusive combination of increased energy capture and reduced structural costs. This improvement is applied to all homes with vented attics with existing insulation that is less than R-49. For this analysis, we assume that finished basements are heated and cooled, whereas unfinished basements are not directly heated or cooled. This improvement involves sealing and insulating any HVAC supply and return ductwork that is outside of conditioned space. Differences in approach or format of results may make comparisons to other efficiency potential analyses invalid. NREL's Building Energy Science team focuses on early-stage research for building energy technologies, including advanced components and efficiency strategies for new buildings and retrofits. The original “legacy” data center had an annual energy consumption as high as 2,394,000 kWh and the overall utilization rate was less than 5%. The National Residential Efficiency Measures Database is a publicly available, centralized resource of residential building retrofit measures and costs for the U.S. building industry. For full details, see The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Supply and return duct surface area is also specified as a function of finished floor area and number of stories. Single-Family Housing Stock. If 'Auto' is entered, BEopt will use ENERGY STAR criteria to determine the energy factor. 2017 for details). Erin BoydErin.Boyd@hq.doe.gov, NREL is a national laboratory of the U.S. Department of Energy Introduction to Illinois Energy Efficiency Programs. For this analysis, duct leakage is defined as the fraction of air handler fan flow rate that leaks out of pressurized supply ducts into unconditioned space, plus the fraction of fan flow rate that leaks into depressurized return ducts from unconditioned space, plus any leakage into or out of the air handler itself (all measured at 25 pascals pressure difference). The unit used for this analysis has one of the highest efficiencies on the market - SEER 27 and HSPF 11.5. Learn more about the database. DE-AC36-08GO28308 NREL Job Task Analysis: Energy Auditor Heat gain and heat loss through windows are responsible for 25%–30% of residential heating and cooling energy use. Wilson, E., et al. 2017. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy… In homes without existing air conditioning, total energy use could increase because of new AC usage. There is a lack of good data on the range of duct leakage in existing homes, but one field study found an average of 21% leakage. Single-Family Housing Stock. Note that local codes may require more than R-10 when insulating foundation walls. The System Advisor Model (SAM) is a performance and financial model designed to estimate the cost of energy for grid-connected power projects based on installation and operating costs and system design in order to facilitate decision making for people involved in the renewable energy industry. We advance the science and engineering of energy efficiency in buildings, schools, communities, and districts by optimizing energy systems and renewable technologies. This LED-based pulse quantum efficiency (QE) system enables NREL to measure the spectral response of PV modules quickly and reliably, without the need to individually tab cells. For this analysis, smart thermostats were modeled in a way analogous to programmable thermostats rather than attempting to model the specific control algorithms of one or more brands of smart thermostat and the associated occupant behavior patterns that would drive those control algorithms. Find a Job Explore our current job postings, which include research positions and other career opportunities in a variety of fields. With support from the U.S. Department of Energy, NREL developed this tool to help users determine the most cost-effective retrofit measures for improving energy efficiency of existing homes. This inverter-driven heat pump is representative of ducted VSHPs currently on the market. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. When migrating this data center into the RSF, NREL’s engineers prioritized energy efficiency, identifying opportunities to upgrade the data center and make it suitable for a net-zero energy building. NREL also performs research on photovolt of rigid extruded polystyrene foam to the interior side of foundation walls and rim joists in crawlspaces, and seals any crawlspace vents. The reference for this improvement is installation of an electric furnace identical to the existing one (100% AFUE). Holes for adding insulation are drilled in each wall cavity (every 16 inches). The reference for these improvements is based on the current federal standard for furnaces of 82% for oil. This foundation insulation improvement adds R-10 (2 in.) Beginning in 2018, Com Ed will achieve 7.8% cumulative persisting annual electric savings. Retrofit Chicago - Learn more about Chicago's cross-sector effort to drive energy efficiency in municipal, commercial, and residential buildings across the city. NREL/TP-5500-68670, 2017. The Lawrence Berkeley National Laboratory's "Best Practices Guide for Residential HVAC Retrofits" also recommends a target duct leakage of less than 10% of air handler flow for duct sealing retrofits. For this analysis, we used a distribution of leakage based on a normal distribution centered at 20% leakage with a standard deviation of 8% leakage. NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC NREL/FS-5500-68827 • September 2017 × NREL/TP-5500-68670, 2017. http://www.nrel.gov/docs/fy18osti/68670.pdf, This work was supported by the U.S. Department of Energy Building Technologies Office and the Single-Family Housing Stock. Prepared by Eric Wilson and Noel Merket, NREL, and Erin Boyd, U.S. Department of Energy Office of Energy Policy and Systems Analysis. More details on the methodology and input assumptions can be found in the NREL technical report, Energy Efficiency Potential in the U.S. These improvements were assumed to be triggered by failure of the existing furnace; if instead they were triggered by failure of a home's AC, the economics would be similar or better. It meets NEEP's "Cold Climate Air-Source Heat Pump Specification," so it can be considered a cold climate heat pump (CCHP). The National Renewable Energy Laboratory, located in Golden, Colorado, specializes in renewable energy and energy efficiency research and development. This improvement involves installing a new high-efficiency variable-speed heat pump (VSHP) (SEER 22, HSPF 10) upon failure of the existing centrally ducted electric furnace. The results of this analysis assume a siding replacement rate that ranges from 10% of 1980s homes to 50% of pre-1950s homes (see Wilson et al. rigid extruded polystyrene foam) or an R-5 insulated siding product at the time of residing. This inverter-driven heat pump is representative of ducted VSHPs currently on the market. NREL receives funding from Congress to be applied toward research and development projects. Energy Efficiency Potential in the U.S. This foundation insulation improvement adds R-10 (2 in.) NREL is a government-owned, contractor-operated facility, and is funded through the United States Department of Energy. Single-Family Housing Stock, National Residential Efficiency Measures Database, https://basc.pnnl.gov/resource-guides/mini-split-ductless-heat-pumps, https://basc.pnnl.gov/resource-guides/continuous-rigid-insulation-sheathingsiding, https://basc.pnnl.gov/resource-guides/rigid-foam-insulation-existing-exterior-walls, https://basc.pnnl.gov/resource-guides/unvented-crawlspaces-and-conditioned-basements, https://basc.pnnl.gov/resource-guides/blown-insulation-existing-vented-attic, Btu per year gas, propane, and fuel oil savings. And it offers a custom map of spectral response at different locations. ResStock is free, open source, and publicly available, with the large-scale simulations running on Amazon cloud computing. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 • www.nrel.gov Contract No. Thus they are applicable to homes without existing duct systems. It meets NEEP's "Cold Climate Air-Source Heat Pump Specification", so it can be considered a cold climate heat pump. Gain insights on the methodology and view national- and state-level results in the NREL Technical Report, Energy Efficiency Potential in the U.S. In practice, the amount of displacement is highly dependent on occupant behavior and control strategy (set point of supplement heat relative to DHP, doors left open or closed, insulating value of the thermal enclosure, comfort preferences, etc.). Field studies using this "displacement" model suggest that DHPs typically cover 70%-80% of the heating load. We confirmed that this degree of setback/setup resulted in a similar range of heating and cooling energy savings as observed in field studies. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. NREL's mission is to develop clean energy and energy efficiency technologies and practices, advance related science and engineering, and provide knowledge and innovations to integrate energy … This improvement could alternatively be triggered by failure of a home's AC, in which case the economics would be similar or better. Energy Efficiency Potential in the U.S. Wind Energy Follow NREL NREL is a national laboratory of the U.S. Department of Energy , Office of Energy Efficiency and Renewable Energy , operated by the Alliance for Sustainable Energy, LLC . This number ramps up every year through 2030, at the end of which Com Ed will achieve 21.5% cumulative persisting annual savings. Blown-in fiberglass and blown-in cellulose insulation have similar costs and performance,so a distinction is not made for this analysis. Duct and air handler location are not fields available from RECS, so we infer it from foundation type. The energy efficiency of dehumidifiers is measured by its energy factor, in liters of water removed per kilowatt-hour (kWh) of energy consumed or L/kWh. The latest report presents an analysis on the potential impacts of widespread electrification on the U.S. electricity system—specifically, generation and transmission infrastructure investments, fuel use, system costs, and emissions. In homes that did not have cooling equipment previously, this improvement causes an increase in electricity consumption. Update your browser to view this website correctly. This improvement involves adding densely packed cellulose or fiberglass insulation to existing wood-framed wall cavities that are empty. Based on the Building America HSP, homes with slab foundations have their ducts in the attic, homes with crawlspaces have their ducts in the crawlspaces, and homes with basements have their ducts in basements (conditioned or unconditioned). National Institute of Advanced Industrial Science and Technology NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. See resstock.nrel.gov for more information on using the software, and to learn how to partner with NREL or third-party consultants on additional analyses. DHPs are a subset of mini-split heat pumps that use a wall-, floor-, or ceiling-mounted indoor unit to distribute heated and cooled air. Operated by the Alliance for Sustainable Energy, LLC Blown-in attic insulation only applies to vented attics, not finished attics or cathedral ceilings. Publications The heat pump is sized in accordance with ANSI/ACCA Manuals J and S, except that the heat pump is sized based on the larger of the heating or cooling loads ("cold climate sizing") rather than the cooling load priority specified by Manual S. Heat pumps provide both heating and cooling, so this improvement provides cooling energy savings in homes that already have cooling (room ACs or, less commonly, central AC). The ResStock software can be used to analyze additional scenarios with different input assumptions, for additional technologies, or with additional input data for specific city, state, or utility territories. Dennis Schroeder / NREL Energy efficient windows are an important consideration for both new and existing homes. Both the heat pump and reference replacement furnace capacities are sized in accordance with ANSI/ACCA Manuals J and S, except that the heat pump is sized based on the larger of the heating or cooling loads ("cold climate sizing") rather than the cooling load priority specified by Manual S. Heat pumps provide both heating and cooling, so this improvement provides cooling energy savings in addition to the heating energy savings. SLOPE is developed and maintained by the National Renewable Energy Laboratory with funding and support from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy. However, unlike some newer ducted CCHPs, the representative unit does not retain heat pump capacity at temperatures below 0 °F, so the scenario includes an electric resistance coil for backup heat in parts of the United States with winter temperatures reaching near or below 0 °F. The baseboards are also used during hours of the year when the heating load exceeds the DHP heating capacity. R-38 and R-60 options were also considered, but this R-49 option had the largest economic potential for this state. With this in mind, a 4 °F thermostat setback in heating mode and a 4 °F thermostat setup in cooling mode was used to model the smart thermostat in the subhourly building energy simulations. Analysis approach and input assumptions are listed on the reverse side. The National Renewable Energy Laboratory is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Explore the links below to learn more about Chicago’s energy efficiency and renewable energy strategies and how you can help. Photo by Dennis Schroeder/NREL. Wilson, E., et al. Find NREL-developed data sets, maps, models, and tools used for the analysis of energy and energy efficiency technologies. This improvement brings the R-value of attic floor insulation up to R-49. This improvement involves installing a new high-efficiency variable-speed heat pump (SEER 22, HSPF 10) upon failure of the existing centrally ducted oil furnace. This improvement involves installing one or more high-efficiency ductless heat pumps (DHPs) in homes heated with electric baseboards. We considered an alternative scenario using a less efficient (and less expensive) SEER 14, HSPF 8.2 heat pump instead of the high-efficiency heat pump described here; however, that scenario provided lower economic potential in almost all regions (using both NPV>0 and SPP<5 thresholds). Researchers at the National Renewable Energy Laboratory (NREL) are rethinking WEC designs to provide a new pathway for the development of next-generation cost-competitive systems. Other studies have used values ranging from 60%-80% displacement of the heating load. Researchers from the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) and the University of New South Wales achieved a new world-record efficiency for two-junction solar cells, creating a cell with two light-absorbing layers that converts 32.9% of sunlight into electricity. SAM includes financial models for the following kinds of projects: Residential building (retail electricity rates) Department of Energy. NREL’s indoor cultivators mimic conditions in large-scale outdoor algae farms, serving as an efficient testing platform for U.S. Department of Energy (DOE) National Laboratory researchers working to lower the cost of algal biofuels and bioproducts. U.S. Energy and Employment Report, Analysis approach and input assumptions are listed here. The National Renewable Energy Laboratory released a fifth volume in its Electrification Futures Study series. Rated energy factor is at inlet condition of 80 deg-F DB and 60% RH. NREL: National Residential Efficiency Measures Database Home Page The National Residential Efficiency Measures Database is a publicly available, centralized resource of residential building retrofit measures and costs for the U.S. building industry. Webmaster  |  Security & Privacy  |  Disclaimer  |  NREL Home. Office of Energy Efficiency and Renewable Energy The analysis results presented here used the following approach and input assumptions. 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