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Bi-Level Stairwell Lighting Controls

Typically combine bi-level LED drivers or fluorescent bi-level ballasts and occupancy sensors to reduce lighting levels in stairwells when the stairwell is unoccupied.

TAG Technical Score: 4.14

Program Score: 2.36

Energy Savings: 51%

Regional Potential: 0.91 MWh/year

ID: 108

Server Virtualization

Consolidating the data and processing from a number of partially loaded servers into a single server to cut power use and heat production.

TAG Technical Score: 4.14

Energy Savings: 40%

ID: 164

LED Street Lighting

Lighting fixtures for residential, rural, and city streets that employ light-emitting diode (LED) technology to deliver better light quality and use less energy.

TAG Technical Score: 3.86

Energy Savings: 50%

Regional Potential: 0.41 MWh/year

ID: 78

LED Outdoor Wall-Mounted Area Luminaires

Designed to light walkways and building entries and provide security lighting for areas adjacent to buildings. Wall-mounted area luminaires using LED lamps are becoming widely available.

TAG Technical Score: 3.84

Energy Savings: 58%

Regional Potential: 0.08 MWh/year

ID: 395

Integrated Classroom Lighting System

A combination of efficient light fixtures, high-efficiency fluorescent light sources and user-friendly controls that allows pleasant, indirect lighting during normal use and dimming for audiovisual presentations that is coupled with low-level direct lighting for student t...

TAG Technical Score: 3.72

Energy Savings: 40%

Regional Potential: 0.10 MWh/year

ID: 133

Bi-Level Office Lighting with Occupancy Sensors, Auto-On 50%

Office lighting that turns half the lighting on when occupancy is detected. The other half of the lighting can be brought on manually or turned off as desired for more detailed work, for guests, or other reasons.

TAG Technical Score: 3.68

Program Score: 2.2

Energy Savings: 40%

Regional Potential: 0.72 MWh/year

ID: 222

LED Parking Lot Lighting

Outdoor parking lot lighting employing LED technology.

TAG Technical Score: 3.54

Energy Savings: 46%

Regional Potential: 2.95 MWh/year

ID: 417

Bi-Level Lighting with Occupancy Sensors in Parking Lots and Garages

Parking lot and garage fixtures with bi-level controls typically combining bi-level LED, fluorescent, or induction lighting with occupancy sensors to set lighting to a low level when the space is unoccupied.

TAG Technical Score: 3.52

Energy Savings: 40%

Regional Potential: 0.46 MWh/year

ID: 63

High Performance Elevators

Passenger and freight elevators with efficiency features such as gearless permanent magnet synchronous motors, traction belts instead of steel ropes, dispatch control, and motors with regenerative braking.

TAG Technical Score: 3.5

Energy Savings: 80%

Regional Potential: 0.12 MWh/year

ID: 471

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

Solid State Drive (SSD)

Faster, solid state data storage used in place of conventional electromechanical hard disk drives (HDDs) in computers and servers.

TAG Technical Score: 3.36

Energy Savings: 50%

ID: 159

Ongoing Commissioning of Economizers in a Data Center

A maintenance protocol/program to verify performance and make corrections to the air or water side economizers in a data center

TAG Technical Score: 3.28

Energy Savings: 10%

Regional Potential: 0.18 MWh/year

ID: 486

Intelligent Outlets, Commercial

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

TAG Technical Score: 3.22

Energy Savings: 26%

Regional Potential: 0.28 MWh/year

ID: 468

LED High-Bay with Wireless Control

High-bay LED fixtures with a wireless occupancy control system.

TAG Technical Score: 3.2

Energy Savings: 74%

Regional Potential: 2.37 MWh/year

ID: 279

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

LED Commercial Office Lighting (2 ft x 2 ft troffer)

Open area recessed, suspended or surface-mounted fixtures for office lighting, typically in place of fluorescent troffers.

TAG Technical Score: 3.06

Energy Savings: 25%

Regional Potential: 0.11 MWh/year

ID: 401

Low-Cost Energy Management and Control System for Small to Medium Commercial Buildings

Affordable and cost-effective monitoring and controls solutions for small- to medium-sized commercial buildings.

TAG Technical Score: 3.02

Energy Savings: 10%

Regional Potential: 0.73 MWh/year

ID: 347

High-Efficiency UPS Equipment for a Data Center

Installing new, more efficient UPS units as a direct replacement to reduce losses and save energy.

TAG Technical Score: 3.0

Energy Savings: 3%

ID: 488

Lighting Controls for Outdoor Lighting

Advanced control systems with dimmable sources to adjust the amount of light for the presence of people, time of day, season and weather conditions and significantly reduce energy use.

TAG Technical Score: 2.98

Energy Savings: 40%

Regional Potential: 0.27 MWh/year

ID: 225

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

Adaptive Power Management for IT Equipment

Taking advantage of power management capabilities in servers and other IT equipment to be able to shut them down or lower the power consumption when not in use.

TAG Technical Score: 2.92

Energy Savings: 20%

ID: 508

Daylight Redirecting Window Film

Window film on exterior windowpanes that redirects daylight upward towards the ceiling with minimal glare to occupants, using a diffusing film on the interior pane as needed (3M).

TAG Technical Score: 2.9

Energy Savings: 16%

Regional Potential: 0.01 MWh/year

ID: 513

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

Direct Server Cabinet Cooling

A special cabinet that encases servers so only the servers are cooled, not the entire server room.

TAG Technical Score: 2.62

Energy Savings: 15%

Regional Potential: 0.53 MWh/year

ID: 68

Indirect-Direct Stand Alone Evaporative Cooler

A device that employs both indirect and direct evaporative cooling instead of using the vapor-compression/refrigeration cycle. This maximizes evaporative cooling while increasing humidity less than direct evaporative cooling alone.

TAG Technical Score: 2.4

Energy Savings: 30%

Regional Potential: 0.37 MWh/year

ID: 23

Building Energy Performance Analytics Software and Services

Software packages and services that analyze energy and performance data for fault diagnosis as well as optimizing system performance. They also establish a baseline and calculate savings based on the baseline.

TAG Technical Score: 2.34

Energy Savings: 10%

Regional Potential: 1.11 MWh/year

ID: 353

SAN (Storage Area Network) and LAN (Local Area Network) Convergence

A data center network system that reduces the number and size of distributed rack-based switching hardware and services into smaller, higher bandwidth machines with associated consolidated cabling systems.

TAG Technical Score: 2.14

Energy Savings: 56%

ID: 509

"Green Pumps" Program: Refurbishing Pumps to Improve Energy Efficiency

A program for refurbishing old, large pumps to increase efficiency.

TAG Technical Score:

Energy Savings: 7%

Regional Potential: 0.44 MWh/year

ID: 430

Active Chilled Beam Heating and Cooling

A heating and cooling system that draws room air past hot or cold water heat exchangers and provides conditioned air and necessary ventilation air into the space.

TAG Technical Score:

Energy Savings: 20%

Regional Potential: 0.44 MWh/year

ID: 316

Add motorized dampers to envelope duct penetrations

Motorized dampers that close automatically when an HVAC fan is turned off, saving energy by reducing infiltration.

TAG Technical Score:

Energy Savings: 10%

Regional Potential: 0.64 MWh/year

ID: 426

Advanced Commercial Refrigeration System Controller

A device utilizing advanced control strategies, including adaptive mechanisms, to optimize commercial refrigeration system operation and reduce energy consumption.

TAG Technical Score:

Energy Savings: 17%

ID: 4

Advanced Design Rooftop Unit

These retrofit units offer improved energy performance over typical existing "commercial" rooftop units by enhancing the performance of individual components and configurations, including fans, coils, filters, dampers, compressors, condensers, controls, and airflow path.

TAG Technical Score:

Energy Savings: 60%

Regional Potential: 1.93 MWh/year

ID: 246

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

Advanced Energy Information Systems

By integrating EMCS with web-based data from smart meters and submeters, energy performance can be tracked in real time and thus optimized.

TAG Technical Score:

Energy Savings: 8%

ID: 377

Advanced Lighting Control Systems

Advanced lighting control systems, either with wireless sensors, or with luminaire integrated lighting controls, provide occupancy-sensor and light-level control plus energy metering.

TAG Technical Score:

Energy Savings: 50%

Regional Potential: 6.35 MWh/year

ID: 117

Advanced Rooftop Unit Controls (ARC) Retrofit

Controllers to retrofit existing rooftop units to optimize performance by providing remote energy monitoring and control as well as variable speed drives, demand-controlled ventilation, and other features.

TAG Technical Score:

Energy Savings: 45%

Regional Potential: 2.14 MWh/year

ID: 338

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

Air Compressor with Adjustable Speed Drive

Adjustable Speed Drive (ASD) control of oil-lubricated or oil-free rotary screw air compressors is more efficient than load/unload, modulating, or modulating with unloading flow control.

TAG Technical Score:

Energy Savings: 38%

Regional Potential: 0.35 MWh/year

ID: 90

Air Curtains at Building Openings

A thin curtain of conditioned air blown down just inside of exterior doors that keeps outside air from blowing into commercial buildings when doors are open.

TAG Technical Score:

Energy Savings: 4%

Regional Potential: 0.03 MWh/year

ID: 427

Air Flow Management for Data Centers

A collection of techniques and strategies that direct supply air to the servers at a rate needed for server performance while minimizing airflow energy costs.

TAG Technical Score:

Energy Savings: 30%

Regional Potential: 1.06 MWh/year

ID: 376

Air-Side Economizer for Data Centers

Using up to 100% outside air cooling capability in a data center to provide "free" cooling in an application where outside air would otherwise be provided only to satisfy minimum ventilation requirements.

TAG Technical Score:

Energy Savings: 25%

Regional Potential: 0.88 MWh/year

ID: 119

Ammonia Heat Pump Waste Heat Recovery

Ammonia heat pumps convert the waste heat from refrigeration into useable high temperature heat, rather than exhausting it to the atmosphere through evaporative condensers.

TAG Technical Score:

ID: 629

Automatic Dimming or Daylighting Controls

A lighting control that will either continuously dim, turn off, or bi-level step operate electric lighting in response to daylight entering the space.

TAG Technical Score:

Energy Savings: 33%

Regional Potential: 0.80 MWh/year

ID: 144

Automatic Reset of Dryer Dew Point Setpoint

For dryers serving compressed air systems that have distribution piping in spaces that experience seasonal changes in temperature. This setpoint is a function of the critical (lowest) ambient air temperature.

TAG Technical Score:

ID: 132

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

Centrifugal Chiller Compressors with Magnetic Bearings and Variable Speed Control

Refrigerant compressors that use magnetic bearings in lieu of lubricated mechanical bearings. They feature an oil-free design, with an integral super-premium efficiency permanent magnet motor for speed control and soft starting capability.

TAG Technical Score:

Energy Savings: 30%

Regional Potential: 4.46 MWh/year

ID: 109

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

Clean-On-Demand Compressed Air Controls for Baghouses

Controls that limit the use of compressed air so it is used only when industrial baghouses need to be cleaned.

TAG Technical Score:

Energy Savings: 5%

ID: 171

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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