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Interior Storm Windows

Interior glazing that roughly doubles the insulation value of single-pane windows and can greatly decrease infiltration from leaky windows while not impacting the building's appearance. It is often color-matched to minimize impact on a building’s interior appearance.

TAG Technical Score: 3.5

Energy Savings: 40%

Regional Potential: 0.16 MWh/year

ID: 536

Natural Ventilation for Mixed-Mode Conditioning

Utilizing natural ventilation (driven by wind and stack effect rather than fans) for nighttime precooling of a building, preferably one with extensive exposed masonry structure in a climate with significant daily temperature swings

TAG Technical Score: 3.18

Energy Savings: 20%

Regional Potential: 0.22 MWh/year

ID: 541

3-Function Heat Pump: Hot Water, Space Heating and Cooling

A heat pump system providing residential heating, cooling and domestic water heating.

TAG Technical Score: 2.92

Energy Savings: 50%

Regional Potential: 4.50 MWh/year

ID: 156

High-Efficiency Set-Top Boxes

High-Efficiency electronic devices that convert incoming data signals to a format usable by a TV or computer monitor with low standby power and other efficiency strategies.

TAG Technical Score: 2.74

Energy Savings: 55%

Regional Potential: 0.82 MWh/year

ID: 84

Advanced Energy Efficient Window Films

Window films that can be applied to older single-pane windows as an alternative to replacement with new double-pane windows.

TAG Technical Score:

Energy Savings: 4%

Regional Potential: 0.13 MWh/year

ID: 475

Aerogel Insulated Double-Glazed Windows

A transluscent or opaque material with an insulating value up to R-20 per inch that can be used in windows, skylights, and walls (Aerogel, Kalwall).

TAG Technical Score:

Energy Savings: 83%

Regional Potential: 0.77 MWh/year

ID: 290

Aerosol-Based Duct Sealing for Residential and Commercial Buildings

An aerosol sealant is blown through ducts, plugging leaky ducts from inside the duct system without having to locate or access holes. This technology can be applied to both residential and commercial duct systems.

TAG Technical Score:

Energy Savings: 20%

Regional Potential: 1.21 MWh/year

ID: 178

Behavior Based Efficiency (Home Energy Reports)

Services provided by third-party vendors such as home monitoring and energy reports based on smart thermostat data for utilities to use in residential behavior-based energy-saving programs.

TAG Technical Score:

Energy Savings: 3%

Regional Potential: 0.85 MWh/year

ID: 460

Biobased Window Foam

Foams made from agricultural products that can be blown into hollow vinyl window frames.

TAG Technical Score:

Energy Savings: 5%

Regional Potential: 0.03 MWh/year

ID: 266

Circulating Hot and Chilled Water Pumps with Variable Speed ECPM Motors

Speed-controlled circulating pumps for heating, cooling, and domestic hot water systems using electronically commutated permanent magnet (ECPM) motors.

TAG Technical Score:

Energy Savings: 75%

Regional Potential: 0.01 MWh/year

ID: 291

CO2 Heat Pump Water Heaters

An energy-efficient electric heat pump water heating system that uses heat extracted from the air to heat water for residential use. These heat pumps use supercritical carbon dioxide as a refrigerant.

TAG Technical Score:

Energy Savings: 66%

Regional Potential: 6.74 MWh/year

ID: 389

Cold Climate Ductless Heat Pump for Residential Application

A variable speed ductless air source heat pump (see ID #300) specifically designed to operate at capacity without supplemental heat down to very low temperatures -- as low as -25F.

TAG Technical Score:

Energy Savings: 50%

Regional Potential: 1.60 MWh/year

ID: 199

Distribute DC Power from PV to Electronics

DC power distribution systems make more efficient use of PV power when powering electronics that run on DC by eliminating transformer Losses.

TAG Technical Score:

Energy Savings: 8%

ID: 553

Drain-Water Heat Recovery

Copper-coiled heat exchanger to recover heat from waste hot water. For showers or other domestic hot water.

TAG Technical Score:

Energy Savings: 30%

Regional Potential: 2.46 MWh/year

ID: 157

Ducted Variable-Speed Split System Heat Pump

A ducted heat pump leveraging the successful inverter-driven technology found in ductless heat pumps.

TAG Technical Score:

Energy Savings: 39%

Regional Potential: 2.60 MWh/year

ID: 332

Ductless Mini-Split Heat Pump for Manufactured Homes

Ductless Mini-Split Heat Pumps with Variable Speed Compressors, but this application is designed specifically for use in multifamily residential applications.

TAG Technical Score:

Energy Savings: 33%

Regional Potential: 1.11 MWh/year

ID: 301

Ductless Mini-Split Heat Pump for Multi-Family Housing

Mini-Split Heat Pumps with Variable Speed Compressors, but this application is designed specifically for use in multi-family homes.

TAG Technical Score:

Energy Savings: 41%

Regional Potential: 0.58 MWh/year

ID: 302

Ductless Mini-Split Heat Pumps for Residential Applications

Ductless split systems with non-inverter driven compressors have been available in the U.S. for decades. Within the last few years, the market has begun to shift to using inverter-driven compressors. Non-inverter driven compressors are still used however, typically due t...

TAG Technical Score:

Energy Savings: 32%

Regional Potential: 3.04 MWh/year

ID: 300

ECPM Motors for Single-phase HVAC Fan Applications

High efficiency electronically commutated permanent magnet (ECPM) motors with inherent variable speed capability that are ideal retrofits for package terminal air conditioners, room air conditioners, unitary condenser fans and blowers, and exhaust fan applications.

TAG Technical Score:

Energy Savings: 33%

Regional Potential: 2.44 MWh/year

ID: 101

Heat Pump Water Heater-Residential Integrated Units

Heat pump water heaters (HPWHs) use a heat pump refrigeration cycle to remove heat from the surrounding air and transfer that heat at a higher temperature into the integral hot water storage tank. “Integrated Units” means that the heat pump and water heater tank are pre-m...

TAG Technical Score:

Energy Savings: 50%

Regional Potential: 2.16 MWh/year

ID: 172

Heat Recovery Clothes Dryer

A clothes dryer that uses an air-to-air heat exchanger to recover about 40% of the heat exhausted from a commercial or residential clothes dryer to pre-heat incoming supply air.

TAG Technical Score:

Energy Savings: 15%

Regional Potential: 0.58 MWh/year

ID: 198

Heliostat

A rooftop device to track the sun using two small motors controlled by a computer, directing more daylighting into a building's interior throughout the day as needed.

TAG Technical Score:

ID: 528

High Performance Windows

Highly insulated (R-5 or higher) windows, also known as super windows.

TAG Technical Score:

Energy Savings: 12%

Regional Potential: 0.95 MWh/year

ID: 540

High-Volume, Low-Speed Fans

A high-volume, low-speed (HVLS) fan up to 24 feet in diameter, capable of displacing many smaller constant speed fans.

TAG Technical Score:

Energy Savings: 96%

Regional Potential: 0.02 MWh/year

ID: 620

Hybrid Direct Expansion With Evaporative Pre-Cooling

Hybrid cooling that couples conventional high-efficiency mechanical cooling with one or more evaporative cooling techniques to minimize compressor electricity demand and consumption.

TAG Technical Score:

Energy Savings: 25%

Regional Potential: 0.59 MWh/year

ID: 59

Improved Efficiency Incandescent Light Bulbs

An incandescent light that has increased efficiency through a stand-alone filter to recycle photons from emitted infrared light.

TAG Technical Score:

Energy Savings: 50%

Regional Potential: 0.08 MWh/year

ID: 286

In-Home Energy Use Displays

Provide real-time and historic energy use information in homes and businesses to encourage conservation.

TAG Technical Score:

Energy Savings: 9%

Regional Potential: 4.75 MWh/year

ID: 142

Install Ducts in Conditioned Space

Designing buildings with ducts in conditioned space to eliminate the heat loss associated with duct leakage.

TAG Technical Score:

Energy Savings: 10%

Regional Potential: 0.05 MWh/year

ID: 154

Insulated Cellular Shades

Window shades that incorporate a honeycombed cross section with air-trapping pockets that add an insulating layer to help save energy, with single or multiple cells.

TAG Technical Score:

Energy Savings: 16%

Regional Potential: 0.10 MWh/year

ID: 474

Insulated Concrete Forms for Residential and Commercial Applications

Use insulated concrete forms (ICFs)--interlocking systems of formworks for reinforced concrete that stay in place as permanent interior and exterior substrates for walls, floors, and roofs.

TAG Technical Score:

Energy Savings: 44%

ID: 530

Insulated Heat Tape for Freeze Protection with Advanced Controls

Electric heat tape for water pipe heat protection that includes insulation and thermostatic control.

TAG Technical Score:

Energy Savings: 0%

ID: 149

Insulated Vinyl Siding

Siding material with a backing made from extruded polystyrene foam that improves insulation value and durability.

TAG Technical Score:

Energy Savings: 6%

Regional Potential: 0.32 MWh/year

ID: 287

Integrated Design Strategies

Design a strategy that considers interaction and synergy among energy systems in order to maximize building energy efficiency and cost effectiveness, such as building envelope improvements that decrease the cost of HVAC and PV systems.

TAG Technical Score:

Energy Savings: 5%

Regional Potential: 2.21 MWh/year

ID: 196

Intelligent Power Strip

Automation is used to control a power strip that turns off power to unused equipment using control strategies including master switching of related peripherals, sensing equipment in standby mode and occupant sensing.

TAG Technical Score:

Energy Savings: 28%

ID: 27

Interior Automated Window Shades

Interior window shades controlled by an automated system in response to available sunlight and need for controlling solar heat gain and glare.

TAG Technical Score:

Energy Savings: 75%

Regional Potential: 0.17 MWh/year

ID: 538

LED A-Lamps

LED lamps intended as a direct replacement for conventional incandescent light bulbs, officially known as A-lamps.

TAG Technical Score:

Energy Savings: 80%

Regional Potential: 2.13 MWh/year

ID: 214

LED Downlights (Can) for Residential Retrofit Applications

Downlighting using LED technology to provide very efficient, very directional, instant-on, and often dimmable lighting to replace CFLs and incandescent lamps for “can” lights.

TAG Technical Score:

Energy Savings: 75%

Regional Potential: 0.34 MWh/year

ID: 100

LED Outdoor Area Lighting

Light Emitting Diode (LED) lighting for many general outdoor lighting applications, such as to illuminate landscape features, attract shoppers to retail areas, illuminate outdoor sales areas like gas stations and car sales lots, illuminate pedestrian and bicycle pathways ...

TAG Technical Score:

Energy Savings: 57%

Regional Potential: 0.48 MWh/year

ID: 79

LED Outdoor Luminaires Residential

Outdoor LED luminaires designed for residential use. This is functional lighting, as opposed to decorative or landscape lighting.

TAG Technical Score:

Energy Savings: 80%

Regional Potential: 1.88 MWh/year

ID: 411

LED Replacements for Directional Lighting

Integral track systems, usually ceiling-mounted tracks with adjustable heads (not directional replacement lamps in existing cans).

TAG Technical Score:

Energy Savings: 76%

Regional Potential: 0.70 MWh/year

ID: 399

LED Task Lighting

Plug-in LED luminaires used to supplement ambient light at workstations

TAG Technical Score:

Energy Savings: 85%

Regional Potential: 0.02 MWh/year

ID: 3

LED Under-Cabinet Lighting

LED lighting for mounting under cabinets, typically in office cubicles and kitchen applications.

TAG Technical Score:

Energy Savings: 50%

Regional Potential: 0.05 MWh/year

ID: 150

Liquid-Applied Weather-Resistant Barrier, Residential

Flexible membrane on the outside of a house under the siding that forms a weather barrier, sprayed, rolled, or brushed on as a liquid. Replaces building wrap such as Tyvek.

TAG Technical Score:

Energy Savings: 20%

ID: 570

Networked Home Energy Automation Controls

A device that offers on-site and remote residential HVAC, lighting, and plug load control. These controls can be equipped with occupancy and temperature sensors in each room and registers with adjustable louvers to fine-tune comfort and lighting based on occupancy.

TAG Technical Score:

Energy Savings: 12%

Regional Potential: 5.99 MWh/year

ID: 337

Non-Intrusive Load Monitoring

A method of disaggregating facility loads into individual components by non-intrusive methods without the need for submetering.

TAG Technical Score:

Energy Savings: 2%

ID: 294

Passive House

A voluntary residential design and construction standard originating in Europe focused on maximizing performance of a home's thermal envelope in order to reduce the heating or cooling load to less than 4.75 kBtu/ft2-yr in any climate zone.

TAG Technical Score:

Energy Savings: 50%

ID: 243

Phase-change Materials

Building materials with phase-change properties that increases their effective thermal mass for thermal energy control and storage.

TAG Technical Score:

Energy Savings: 15%

Regional Potential: 2.93 MWh/year

ID: 229

Smart Thermostat for Residential HVAC Control

A smart thermostat provides advanced energy management features. Capabilities include occupancy sensing, remote monitoring, data analysis, automation, system optimization, and reporting to optimize control of home space conditioning enabled by advanced technology for sen...

TAG Technical Score:

Energy Savings: 12%

Regional Potential: 0.48 MWh/year

ID: 240

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