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Radiant Heating and Cooling with Dedicated Outside Air System (DOAS)

Provides space conditioning by circulating heated or cooled water through radiant ceiling panels, floor, or walls while required ventilation air is provided by a dedicated air handling unit.

TAG Technical Score:

Energy Savings: 20%

Regional Potential: 0.51 MWh/year

ID: 74

Radio Frequency (RF) Clothes Dryers

Clothes dryers that use radio frequency energy to dry fabrics rather than heat air, cutting energy use by up to 24%.

TAG Technical Score:

Energy Savings: 20%

ID: 545

Radio Frequency Thawing for Fish and Meat Products

A method of rapid and energy-efficient thawing of frozen food with minimal product degradation.

TAG Technical Score:

Energy Savings: 10%

ID: 450

Refrigerated Case Aftermarket Anti-Fogging Film

Film installed inside reach-in supermarket cases that greatly reduces condensation and the need for anti-sweat controls, thus reducing energy use.

TAG Technical Score:

Energy Savings: 35%

ID: 140

Relocate Transformers to Outside of Conditioned Space in a Data Center

Relocation of active transformers to reduce demand on the cooling system in conditioned spaces.

TAG Technical Score:

Energy Savings: 4%

Regional Potential: 0.00 MWh/year

ID: 498

Replace UPS with On-Board Battery Backup on IT Equipment

Using on-board battery backup for each server rather than using centralized uninterruptable power supplies.

TAG Technical Score:

Energy Savings: 2%

ID: 491

Replacing Desiccant with Refrigerated Compressed Air Dryers

A strategy to cut compressed air dryer energy use in applications where refrigerated dryer dew point is sufficient, providing air with a higher dew point while reducing electricity use.

TAG Technical Score:

Energy Savings: 85%

ID: 69

Repulping of Recovered Coated and Laminated Paper

A more efficient repulping technology that allows paper fiber with coatings or plastic laminations and multi-laminated food product packaging to be recovered without the use of chemical additives.

TAG Technical Score:

Energy Savings: 99%

ID: 459

Residential Heat Pump Clothes Dryer

A clothes dryer for residential application that uses heat pump technology to remove moisture from laundry.

TAG Technical Score:

Energy Savings: 50%

Regional Potential: 2.11 MWh/year

ID: 224

Residential Scale Combined Heat and Power (CHP)

Residential scale fuel-based electrical generators that recover excess heat so it can also be used to produce hot water, space or pool heating.

TAG Technical Score:

Energy Savings: 47%

Regional Potential: 1.56 MWh/year

ID: 73

Residential Water Heating from Air Conditioning Unit Heat Recovery

Installation of waste heat recovery units on residential air conditioning condensing (outside) units to supplement domestic water heating.

TAG Technical Score:

Energy Savings: 30%

Regional Potential: 0.43 MWh/year

ID: 8

Residential Water-Cooled Condenser

Residential sized water cooled condenser air conditioning technology has been available for several years. Laboratory and field testing of several generations documented the efficiency potential of this technology. Water Cooled condenser technology offers significant elec...

TAG Technical Score:

Energy Savings: 30%

Regional Potential: 0.32 MWh/year

ID: 88

Reverse Cycle Chiller Application in Multifamily Dwelling

A chiller that operates the refrigeration cycle in reverse in order to provide domestic hot water; also known as a heat pump water heater.

TAG Technical Score:

Energy Savings: 40%

Regional Potential: 0.02 MWh/year

ID: 233

Right-Size Data Center Power Equipment

Avoiding over-sizing power equipment to reduce power conversion losses.

TAG Technical Score:

Energy Savings: 3%

ID: 496

Running Data Centers at Higher Voltages for Energy Savings

Running IT equipment in data centers on 400/230 volts AC, as is common practice outside of North America, will reduce resistance and conversion losses.

TAG Technical Score:

Energy Savings: 5%

ID: 5

Scientific Irrigation Scheduling

An irrigation approach that uses soil moisture measurements, real-time weather information, and evapotranspiration modeling to minimize water applications while ensuring adequate irrigation for optimum crop production.

TAG Technical Score:

Energy Savings: 17%

ID: 631

Secondary Glazing Systems

An insulated glazing unit (IGU) installed inside existing commercial building glazing that can triple its insulation value and reduce infiltration and outside noise at roughly half the cost of window replacement.

TAG Technical Score:

Energy Savings: 20%

Regional Potential: 0.81 MWh/year

ID: 609

Self-Powered Lighting Controls

Wireless occupancy sensors and other switches that harvest energy from the environment so that batteries or expensive wiring, making it easier to add more switches and increase local lighting control.

TAG Technical Score:

Energy Savings: 99%

Regional Potential: 0.00 MWh/year

ID: 599

Showerhead Thermostatic Shut-Off Valve

A thermostatic shut-off valve which reduces hot water waste by limiting flow of hot water through the showerhead until called for by the consumer.

TAG Technical Score:

ID: 627

Smart Defrost Kit™ Retrofit Defrost Cycle Controller

A proprietary electronic device intended for use in existing commercial reach-in and walk-in cooler and freezer refrigeration control systems to optimize defrost cycle initiation. Smart defrost controllers can save hundreds of dollars each year, depending on the size of ...

TAG Technical Score:

Energy Savings: 30%

ID: 77

Smart Grid

A suite of sensors, controls and communications equipment which, when combined with sophisticated software tools, can monitor and respond to grid conditions and control energy loads.

TAG Technical Score:

Energy Savings: 0%

ID: 128

Smart Residential Outlets

Modular outlets that plug into existing outlets and are programmable to minimize "vampire loads" when plug load is not in use, and reports energy use to a computer or smartphone (EcoThink Modlet).

TAG Technical Score:

Energy Savings: 21%

Regional Potential: 0.80 MWh/year

ID: 511

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

Solid State Plasma Lighting

High-lumen output in a small electrodeless bulb. Gas similar to a metal halide is excited to a plasma state by a driver with RF induction.

TAG Technical Score:

Energy Savings: 40%

ID: 80

Strategic Energy Management

An integrated energy management strategy for organizations that involves management commitment, assessments, planning and improvement goal-setting, improvement implementation, tracking, evaluation, and feedback to modify plans, resulting in a continuous improvement of ene...

TAG Technical Score:

Energy Savings: 5%

Regional Potential: 0.72 MWh/year

ID: 409

Super Premium Efficiency (IE4) Induction Motors

Super-Premium Efficiency motors suitable for commercial and industrial applications.

TAG Technical Score:

ID: 638

Switched Reluctance Motors

A Super Premium Efficiency motor with a rotor that does not have magnets, rotor bars or windings. It is essentially a piece of shaped iron, offering improved efficiency because it can withstand forces from a magnetic field many times greater than those of current-carrying...

TAG Technical Score:

Energy Savings: 2%

Regional Potential: 0.04 MWh/year

ID: 433

Synchronous Belt Drives

Belt drives that have teeth that match teeth in the drive sprocket to prevent slippage and maintain high efficiency throughout their service life.

TAG Technical Score:

Energy Savings: 3%

Regional Potential: 0.79 MWh/year

ID: 436

Thermal Night Covers for Refrigerated Supermarket Display Cases

The installation of night covers on supermarket vertical or semi-vertical display cases can reduce energy use due to reduced refrigeration, air conditioning, and heating loads. The concept is straightforward---insulated night curtains or retractable thermal shields are s...

TAG Technical Score:

Energy Savings: 9%

Regional Potential: 0.04 MWh/year

ID: 615

Thermochromic Windows

Windows with coatings that automatically tint glazing during hot, sunny weather to reduce cooling load.

TAG Technical Score:

Energy Savings: 21%

Regional Potential: 0.02 MWh/year

ID: 263

Thermoelectric Refrigeration for Cabinet Cooling

An air conditioner used to cool electronic equipment that works by sending current through two dissimilar conductors and offers superior efficiency over conventional refrigeration systems.

TAG Technical Score:

Energy Savings: 50%

ID: 445

Transformerless UPS Equipment

Choosing transformerless UPS units as direct replacement to reduce transformer losses and save energy

TAG Technical Score:

Energy Savings: 18%

ID: 494

Turboexpanders at Pressure Letdown Stations

Two similar devices that recover wasted energy in gas pressure letdown applications, with energy savings dependent upon gas flow rates, temperature, and pressure drop.

TAG Technical Score:

ID: 456

Ultracapacitors

An electro-chemical energy storage device, but unlike a battery, which stores energy chemically, ultracapacitors store energy through electro-static charge, without making use of any chemical reactions. This means that an ultracapacitor has some characteristics of a tradi...

TAG Technical Score:

Energy Savings: 0%

ID: 21

Ultrasonic Humidification for Commercial Buildings

Ultrasonic humidifiers add moisture to the air without heating the water by injecting ultrasonic pulses into the water, vibrating water molecules at high speeds. This overcomes molecular forces and allows microscopic water molecules to escape.

TAG Technical Score:

Energy Savings: 90%

Regional Potential: 0.00 MWh/year

ID: 121

Ultraviolet Disinfection of Water and Wastewater

An alternative technique to chemical or ozone water treatment that can reduce environmental and human health impacts of the treatment process.

TAG Technical Score:

Energy Savings: 0%

ID: 13

UNiGY Positive Displacement Pump Control for Injection Molding Machine Hydraulic Systems

Controls that allow for turndown of positive displacement pumps used in hydraulic systems for injection molding.

TAG Technical Score:

Energy Savings: 60%

ID: 120

Use Supplemental Cooling for Occasional Loads in a Data Center

Employing supplemental cooling to high demand racks to avoid over-sizing primary equipment for transient peak loads and/or hot spots.

TAG Technical Score:

ID: 502

Using Lighting Occupancy Sensors in Offices to Control HVAC

Occupancy sensors compatible with lighting and HVAC systems and capable of managing the HVAC operations within a space depending on occupancy.

TAG Technical Score:

Energy Savings: 36%

Regional Potential: 1.76 MWh/year

ID: 53

Vacuum Insulation Panels

A sealed enclosure surrounding a rigid core from which the air has been evacuated, used in building envelopes.

TAG Technical Score:

ID: 531

Variable Frequency Drives for Irrigation Turbine Pumps

Retrofit of adjustable speed drives onto turbine pumps used with deep wells.

TAG Technical Score:

ID: 642

Variable Refrigerant Flow (VRF) Heat Pumps

An advanced variable-speed heat pump system can save energy when compared with conventional air-to-air heat pumps due to better part-load efficiencies, heat recovery, and reducing or eliminating duct losses.

TAG Technical Score:

Energy Savings: 20%

Regional Potential: 1.47 MWh/year

ID: 200

Variable Speed Pump for Commercial Swimming Pools

Variable speed pumps on the filtration system of commercial swimming pools.

TAG Technical Score:

Energy Savings: 34%

Regional Potential: 0.01 MWh/year

ID: 464

Variable Volume Dust Collection System

A ventilation system using automated variable speed fans and motorized gates to reduce energy use in fume and dust collection systems.

TAG Technical Score:

Energy Savings: 40%

Regional Potential: 0.15 MWh/year

ID: 12

Variable-Speed Die Casting Machine

Technology that employs a variable-speed hydraulic pump rather than throttling to meet varying cycle demands.

TAG Technical Score:

Energy Savings: 35%

ID: 173

Variable-Speed Pumps for Residential Swimming Pools

Swimming pool and spa pumps with variable-speed control instead of a two or single-speed motor-driven pump.

TAG Technical Score:

Energy Savings: 50%

Regional Potential: 0.28 MWh/year

ID: 37

Wastewater Heat Exchange System

Equipment that uses wastewater as a heat-exchange medium for pre-heating domestic hot water or for space heating and cooling.

TAG Technical Score:

Energy Savings: 18%

ID: 416

Water Source/Ground Source Heat Pump Heating and Cooling System

Heat pumps that extract heat from a water source (well, river, pond) and distribute it to residential and commercial spaces, such as assisted living units, hotels, dorms, schools, jails or district heating systems.

TAG Technical Score:

Energy Savings: 25%

Regional Potential: 0.05 MWh/year

ID: 29

Web-Enabled Power Monitoring for Small and Medium-Sized Businesses

Equipment that enables small and medium-sized businesses to monitor energy use from the web.

TAG Technical Score:

Energy Savings: 3%

ID: 355

Whole-Building Energy Monitoring

Whole-building energy monitoring tracks whole building energy consumption and compares usage against a comparative Energy Star® buildings, previous utility bills, peer buildings, or energy reduction targets.

TAG Technical Score:

Energy Savings: 10%

ID: 370

Level	Status	Description
1	Concept not validated	Claims of energy savings may not be credible due to lack of documentation or validation by unbiased experts.
2	Concept validated:	An unbiased expert has validated efficiency concepts through technical review and calculations based on engineering principles.
3	Limited assessment	An unbiased expert has measured technology characteristics and factors of energy use through one or more tests in typical applications with a clear baseline.
4	Extensive assessment	Additional testing in relevant applications and environments has increased knowledge of performance across a broad range of products, applications, and system conditions.
5	Comprehensive analysis	Results of lab and field tests have been used to develop methods for reliable prediction of performance across the range of intended applications.
6	Approved measure	Protocols for technology application are established and approved.

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