ENERGY STAR® Program Requirements
Product Specification for Displays
Eligibility Criteria
Draft 2 Version 8.0

1
2

Following is the Draft 2 Version 8.0 ENERGY STAR product specification for Displays. A product shallmeet all of the identified criteria if it is to earn the ENERGY STAR.

3

1 DEFINITIONS

4A) Product Types:

5
6
7
8
9

1) Electronic Display (Display): A product with a display screen and associated electronics, often
encased in a single housing, that as its primary function produces visual information from (1)a computer, workstation, or server via one or more inputs (e.g., VGA, DVI, HDMI, DisplayPort,
IEEE 1394, USB), (2) external storage (e.g., USB flash drive, memory card), or (3) a network
connection.

1011a) Monitor: An Electronic Display intended for one person to view in a desk based
environment.

12
13
14
15
16

b) Signage Display: An Electronic Display intended for multiple people to view in non­desk based environments, such as retail or department stores, restaurants,
museums, hotels, outdoor venues, airports, conference rooms or classrooms. For the
purposes of this specification, a Display shall be classified as a Signage Display if itmeets three or more criterion listed below:

17(1) Diagonal screen size is greater than 30 inches;18(2) Maximum Reported Luminance is greater than 400 candelas per square meter;

19(3) Pixel density is less than or equal to 5,000 pixels per square inch;

20(4) Ships without a mounting stand designed to support the display on a desktop; or

2122(5) Designed to be operated by an external data controller or remote management
system.

23
2425c) Tiled Display System: An array of individual Displays or panels tiled together
contiguously and supported by single external controller and single external power
supply to produce a single larger image.

2627d) Maximum Tiled Configuration: At Tiled Display System with the maximum number ofpanels supported by the power supply and controller.

28
29
30
31
32

Note: Typical Maximum Tiled Configurations include a 2 x 2 configuration (fourdisplay panels). In this example, the minimum configuration would include a single
panel operating with the power supply and controller rated for a total of four panels.
For the purposes of the ENERGY STAR test, only the Maximum Tiled Configurationis considered.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 1 of 16

33
34
35
36
37
38
39
40

Note: Stakeholders commented that there are several larger format models marketed as computer
monitors that meet the definition of Signage Display. Monitors are increasingly becoming brighter (over400 candelas per square meter) with the addition of HDR capability and other high performance features.
To better differentiate between displays and signage , EPA proposes to require that Signage Displays
meet three instead of two of the listed criterion and has additionally added a fifth criterion related toremote management. EPA has found one example of a large format monitor/display with mounting standthat is intended for more than one viewer in a conference room setting and welcomes any additional
stakeholder feedback on how to distinguish Computer Monitors from Signage Displays.

41
42
43
44

In response to Draft 1, EPA received feedback to create a specific product subcategory for tiled displayswith On Mode power requirements similar to comparably sized single panel signage displays. In Draft 2,
EPA is proposing the definition of Tiled Display System and Maximum Tiled Configuration. EPA welcome
stakeholder feedback on this proposal.

4546B) Operational Modes:

4748

1) On Mode: The mode in which the Display has been activated, and is providing the primaryfunction.

49502) Sleep Mode: A low-power mode in which the Display provides one or more non-primary
protective functions or continuous functions.

51
52
53

Note: Sleep Mode may serve the following functions: facilitate the activation of On Mode via
remote switch, Touch Technology, internal sensor, or timer; provide information or status
displays including clocks; support sensor-based functions; or maintain a network presence.

54
55
56

3) Off Mode: The mode where the Display is connected to a power source, produces no visual
information, and cannot be switched into any other mode with the remote control unit, aninternal signal, or an external signal.

57
58

Note: The Display may only exit this mode by direct user actuation of an integrated powerswitch or control. Some products may not have an Off Mode.

59C) Displays Settings and Menus

60
61
62

1) Default Picture Setting: The preset picture setting in the model’s as-shipped default state. If
the Display has a Forced Menu, it is the preset picture setting that the Display entersimmediately after selecting the mode tested according the ENERGY STAR test method.

63
64
65
66

2) Forced Menu: A series of menus which require the selection of initial settings before
allowing the user to utilize primary functions. Within these menus contains an option tochoose the viewing environment between the “standard” picture setting and another picture
setting not tested in the ENERGY STAR test method.

67
68
69

Note: In the case that no standard setting or equivalent exists, the default setting
recommended by the manufacturer is considered “standard” for the purposes of thisspecification. “Standard” can apply to alternative terminology.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 2 of 16

70
71
72

Note: Similar to the ENERGY STAR televisions specification, EPA is proposing definitions for Preset
Picture Setting and Default Picture Setting to refer to the default as-shipped Display mode that is tested
by ENERGY STAR and meets the specification requirements.

73
74
75
76
77
78

The existing ENERGY STAR test method specifies procedures for testing models with a Forced Menu.
EPA is including a formal definition of Forced Menu adopting language from the Version 8 ENERGYSTAR Televisions specification and televisions Federal test procedure 10 CFR 430, Subpart B, Appendix
H, Section 2.5. EPA notes that there are currently 31 displays in the ENERGY STAR dataset that report
the presence of a forced menu and possibly more models that do not report this feature because it was
not prior defined in the specification.

7980D) Visual Characteristics:

81821) Ambient Light Conditions: The combination of light illuminances in the environment
surrounding a Display, such as a living room or an office.

83
842) Automatic Brightness Control (ABC): The self-acting mechanism that controls the brightnessof a Display as a function of Ambient Light Conditions.

85

Note: ABC functionality must be enabled to control the brightness of a Display.

86
87
88

3) Color Gamut: Color gamut area shall be reported as a percentage of the CIE LUV 1976 u' v'
color space and calculated per Section 5.18 Gamut Area of the Information Display
Measurements Standard Version 1.03.

89
90
91

Note: Any gamut support in non-visible/invisible color areas is not to be counted. The
gamut’s size must be expressed as a percentage of area of the visible CIE LUV color space
only.

92
93

4) Luminance: The photometric measure of the luminous intensity per unit area of lighttravelling in a given direction, expressed in candelas per square meter (cd/m2).

94
95
96

a) Maximum Reported Luminance: The maximum luminance the Display may attain at
an On Mode preset setting, and as specified by the manufacturer, for example, in theuser manual.

9798b) Maximum Measured Luminance: The maximum measured luminance the Display
may attain by manually configuring its controls, such as brightness and contrast.

99100c) As-shipped Luminance: The luminance of the Display at the factory default preset
setting the manufacturer selects for normal home or applicable market use.

101
102
103

5) Total Native Resolution: Resolution expressed as total pixel count in megapixels calculated
as the product of physical lines along the vertical and horizontal axes of the Display within
the visible area of the Display.

104
105

Note: A Display with a screen resolution of 1920 x 1080 (horizontal x vertical) would have a
Total Native Resolution of 2.07 megapixels (MP).

106
107
108

Note: In Draft 2, EPA is replacing the definition for Vertical Resolution with a definition for Total Native
Resolution. This definition is used to calculate the resolution that is applied to energy requirements in thisspecification.

109
110
111
112

6) Screen Area: The visible area of the Display that produces images.
Note: Screen Area is calculated by multiplying the viewable image width by the viewable
image height. For curved screens, measure the width and height along the arc of the
Display.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 3 of 16

113E) Additional Functions and Features:

114
115

1) Bridge Connection: A physical connection between two hub controllers (i.e., USB, FireWire).

116
117

Note: Bridge Connections allow for expansion of ports typically for the purpose of relocating
the ports to a more convenient location or increasing the number of available ports.

118
119
120
121
122
123

2) Full Network Connectivity: The ability of the Display to maintain network presence while in
Sleep Mode. Presence of the Display, its network services, and its applications, ismaintained even if some components of the Display are powered down. The Display canelect to change power states based on receipt of network data from remote network devices,
but should otherwise stay in Sleep Mode absent a demand for services from a remote
network device.

124
125

Note: Full Network Connectivity is not limited to a specific set of protocols. Also referred toas “network proxy” functionality and described in the Ecma-393 standard.

126
127

3) Occupancy Sensor: A device used to detect human presence in front of or in the areasurrounding a Display.

128
129
130

Note: An Occupancy Sensor is typically used to switch a Display between On Mode andSleep Mode by detecting human presence or a combination of human presence and asignaling device such as Bluetooth device.

131
132

4) Touch Technology: Enables the user to interact with a product by touching areas on the
Display screen.

133
134
135

5) Plug-in Module: A modular plugin device that provides one or more of the following functions
without the explicit purpose of providing general computing function intended for a broad
range of home and office applications:

136
137

a) Display images, mirror remote content streamed to it, or otherwise render content on
the screen from local or remote sources; or138b) Process touch signals.

139
140
141

Note: Modules providing any other additional input options are not considered Plug-in
Modules for the purposes of this specification. Modules typically meet the Open Pluggable
Specification (OPS).

142
143
144
145

6) Embedded Module: A non-modular processor or computing system embedded in the
Display that provides one or more of the following functions without the explicit purpose ofproviding general computing function intended for a broad range of home and officeapplications:

146
147

a) Display images, mirror remote content streaming to it, or otherwise render content on
the screen from local or remote sources; or148b) Process touch signals.

149
150
151
152
153
154
155
156
157
158

Note: In response to Version 8 Draft 1 specification, stakeholders commented that Signage Displays withplug-in modules offer computing functions and could overlap with the Computers specification scope.
Stakeholder further noted that instead of a plug-in, removable module, displays could contain an
embedded processor that provides computing functions and can replace the host computer where thecontent is, and instead deliver the content from the network directly to the device. EPA views theseprocessors and modules as similar to Smart TVs that have replaced Set-top Boxes. EPA does not believethese types of displays meet the definition of a Computer because they are not intended for a broad
range of home and office applications including running a variety of non-proprietary software or tasks
including design, word processing, or gaming.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 4 of 16

159
160
161
162
163

In Draft 2, EPA is proposing a revised definition for Plug-In Module to include language that explicitly
excludes computing function “intended for a broad range of home and office applications.” EPA has also
included a new definition for embedded computing function that is intended to cover internal processors
for niche, display-oriented applications such as rendering content or running a proprietary software toform a specific function like delivering interactive educational content.

164
165
166
167

Further, EPA will consider explicitly excluding displays with plug-in or embedded modules from futurerevisions of the ENERGY STAR Computers specification. EPA welcomes general feedback on these
proposals as well as specific examples of displays that may have embedded modules meeting the
proposed definition.

168
169
170
171
172
173

F) Product Family: A group of product models that (1) are made by the same manufacturer, (2)share the same Screen Area, Total Native Resolution, and Maximum Reported Luminance, and(3) are of a common basic screen design. Models within a Product Family may differ from eachother according to one or more characteristics or features. For Displays, acceptable variations
within a Product Family include:

174

1) External housing;1752) Number and types of interfaces;

176

3) Number and types of data, network, or peripheral ports; and1774) Processing and memory capability.

178
179

G) Representative Model: The product configuration that is tested for ENERGY STAR certificationand is intended to be marketed and labeled as ENERGY STAR.

180

H) Power Source

181
182
183

1) External Power Supply (EPS): An external power supply circuit that is used to convert
household electric current into dc current or lower-voltage ac current to operate a consumer
product.

1841852) Standard dc: A method for transmitting dc power defined by a well-known technology
standard, enabling plug-and-play interoperability.

186
187
188

Note: Common examples are USB and Power-over-Ethernet. Usually Standard dc includes
both power and communications over the same cable, but as with the 380 V dc standard,that is not required.

189

2 SCOPE

190

2.1

Included Products

191
192
193
194

2.1.1

Products that meet the definition of a Display as specified herein and are powered directly fromac mains, an External Power Supply, or Standard dc are eligible for ENERGY STAR certification,with the exception of products listed in Section 2.2. Typical products that would be eligible forcertification under this specification include:

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 5 of 16

195

i.

Monitors;

196

ii.

Signage Displays;

197

iii. Signage Displays and Monitors with Plug-in Modules; and

198
199

iv. Signage Displays and Monitors with Embedded Modules.

200
201

Note: Per the new proposed definition of Embedded Module, EPA has proposed language that explicitly
includes Displays with Embedded Modules in the scope of this specification.

202

2.2

Excluded Products

203
204
205
206

2.2.1

Products that are covered under other ENERGY STAR product specifications are not eligible forcertification under this specification including Televisions and Computers (Thin Clients,
Slates/Tablets, Portable All-in-one Computers, Integrated Desktops). The list of specifications
currently in effect can be found at www.energystar.gov/products.

207

2.2.2

The following products are not eligible for certification under this specification:

208

i.

Products with an integrated television tuner;

209
210
211

ii.

Displays with integrated or replaceable batteries designed to support primary operation
without ac mains or external dc power, or device mobility (e.g., electronic readers, battery­
powered digital picture frames); and

212
213
214

iii. Products that must meet Food and Drug Administration specifications for medical devices
that prohibit power management capabilities and/or do not have a power state meeting thedefinition of Sleep Mode.

215

v.

Monitors with keyboard, video, and mouse (KVM) switch functionality;216

3 CERTIFICATION CRITERIA

217

3.1

Significant Digits and Rounding

218

3.1.1

All calculations shall be carried out with directly measured (unrounded) values.

219
220

3.1.2

Unless otherwise specified, compliance with specification requirements shall be evaluated using
directly measured or calculated values without any benefit from rounding.

221
222
223

3.1.3

Directly measured or calculated values that are submitted for reporting on the ENERGY STAR
website shall be rounded to the nearest significant digit as expressed in the corresponding
specification requirements.

224

3.2

General Requirements for Monitors and Signage Displays

225
226
227
228

3.2.1

External Power Supplies (EPSs): Single- and Multiple-voltage EPSs shall meet the Level VI or
higher performance requirements under the International Efficiency Marking Protocol when tested
according to the Uniform Test Method for Measuring the Energy Consumption of External Power
Supplies, Appendix Z to 10 CFR Part 430.

229

i.

Single- and Multiple-voltage EPSs shall include the Level VI or higher marking.

230
231

ii.

Additional information on the Marking Protocol is available
at http://www.regulations.gov/#!documentDetail;D=EERE-2008-BT-STD-0005-0218.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 6 of 16

232
233
234

3.2.2

General User Information: The product shall ship with consumer informational materials located ineither (1) the hard copy or electronic user manual, or (2) a package or box insert. These materials
shall include:

235

i.

Information about the ENERGY STAR program,

236
237

ii.

Information on the energy consumption implications of changes to default as-shipped
displays configuration and settings, and

238
239
240

iii.

Notification that enabling certain optional features and functionalities (e.g., instant-on), may
increase energy consumption beyond the limits required for ENERGY STAR certification,
as applicable.

241
242
243
244
245

Note: In Draft 2, EPA is proposing general user information requirements that have been present forsome time in related ENERGY STAR specifications such as televisions and computers. EPA believes
consumers should be informed that there are several features and picture setting modes that theconsumer or installer could enable that may consume more energy than the default as-shipped ENERGYSTAR tested modes.

246
247
248
249
250
251

3.2.3

252
253

Note: Similar to the requirement in the ENERGY STAR televisions specification, EPA is proposing thatthe model indicate which mode meets ENERGY STAR requirements.

Forced Menu: Any product that includes a Forced Menu upon initial start-up shall upon selectionof any mode other than the “standard” as-tested by ENERGY STAR mode either (1) display asecond prompt requiring the user to confirm the choice of the other mode, or (2) display
information either with the ENERGY STAR mark or copy on the start-up menu that the “standard”
default ENERGY STAR tested mode is the setting in which the product qualifies for ENERGY
STAR.

254
255
256

3.2.4

Preset Picture Setting Menu: For any product where consumers have the option of selecting
different picture settings from a preset menu at any time:

257
258
259
260
261

i.

The product shall identify on-screen Default Picture Setting under which the productqualifies for the ENERGY STAR, if available. For example, the product may display anelectronic ENERGY STAR mark alongside the name or description of that Default Picture
Setting or display a message each time any setting other than the Default Picture Setting isselected.

262
263

ii.

The as-tested default mode should return to its original preset picture Settings whenever
the user selects the Default Picture Setting.

264
265
266
267
268

Note: EPA has incorporated and modified sections of the Preset Picture Setting requirements from the
Version 8 ENERGY STAR televisions specification finalized in February 2018. EPA intends for theseabove picture setting requirements to better inform consumers about which mode meets ENERGY STAR
requirements and for users to easily return to the ENERGY STAR tested mode by selecting Default
Picture Setting. EPA welcomes stakeholder feedback on these proposals.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 7 of 16

269
270
271
272

3.2.5

Sleep Mode Settings: If users can select and enable Sleep Mode functions from a display prompt
in On Mode or a settings menu other than a Forced Menu, and if these functions may alter powerdraw (i.e. quick on) from the default as-shipped Sleep Mode in which the product qualifies for the
ENERGY STAR:

273
274
275
276
277

i.

The product shall display on-screen information identifying the settings under which the
product qualifies for the ENERGY STAR. For example, such information may be indicatedby including an electronic ENERGY STAR mark alongside the name or description of thedefault as-shipped settings or in the form of a message displayed each time any setting
other than a default as-shipped setting is selected.

278
279
280
281

ii.

Products with a physical ENERGY STAR mark affixed to the front or top of the Display may
alternatively display on-screen information that enabling settings other than those underwhich the product qualifies for the ENERGY STAR may change the energy consumption of
the product.

282
283
284
285
286

Note: EPA is aware that displays may have higher power Sleep Modes than the default as-tested mode.
Based on discussion with stakeholders, EPA learned that there is pressure on signage manufacturers to
produce low latency sleep modes that enable quick start. These products can have significantly moreconsumptive sleep modes. EPA is proposing use of prompts or the ENERGY STAR mark to indicate
when default settings are changed.

287

3.2.6

Power Management:

288
289
290
291

i.

Products shall offer at least one power management feature that is enabled by default, andthat can be used to automatically transition from On Mode to Sleep Mode either by aconnected host device or internally (e.g., support for VESA Display Power Management
Signaling (DPMS), enabled by default).

292
293

ii.

Products that generate content for display from one or more internal sources shall have asensor or timer enabled by default to automatically engage Sleep or Off Mode.

294
295

iii. For products that have an internal default delay time after which the product transitions fromOn Mode to Sleep Mode or Off Mode, the delay time shall be reported.

296
297

iv. Monitors shall automatically enter Sleep Mode or Off Mode within 5 minutes of being
disconnected from a host computer.

298
299

3.2.7

Signage Displays shall have a true power factor in On Mode of 0.7 or greater per Section 5.2.Fin
the ENERGY STAR Test Method.

300

3.3

Energy Requirements for Computer Monitors

301
302

3.3.1

The Total Energy Consumption (TEC) in kWh shall be calculated per Equation 1 based on
measured values.

303

Equation 1: Total Energy Consumption Calculation

304
305
306
307
308
309
310
311
312

𝐸𝑇𝐸𝐶 = 8.76 × (0.35 × 𝑃𝑂𝑁 + 0.65 × 𝑃𝑆𝐿𝐸𝐸𝑃 )Where:





3.3.2

ETEC is the Total Energy Consumption calculation in kWh;
PON is Measured On Mode Power in watts
PSLEEP is Measured Sleep Mode Power in watts; andThe result shall be rounded to the nearest tenth of a kWh for reporting.

The Maximum TEC (ETEC_MAX) in kWh for Monitors shall be calculated per Equation 2.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 8 of 16

313

Equation 2: Calculation of Maximum TEC (ETEC_MAX) for Monitors in kWh

314
315
316
317
318
319
320

𝐸𝑇𝐸𝐶 𝑀𝐴𝑋 = (4.20 ∗ 𝑅) + (0.122 ∗ 𝐴) + 8.00
Where:



R is the Total Native Resolution in megapixels
A is the Screen Area in inches squared

321
322
323
324
325
326
327
328

Note: In Draft 1, stakeholders suggested EPA to revisit resolution allowance, area coefficients, andintercept value in the TEC calculation. In response to stakeholder comments, EPA has made a slightrevision to the coefficients and intercept values for the Maximum TEC equation in Draft 2. EPA proposes
increasing the resolution allowance to 4.2 kWh per megapixel from 3.99 kWh per megapixel in Draft 1,
slightly decreasing the area coefficient to 0.122 kWh per square inch from 0.123 kWh per square inch in
Draft 1, and common intercept of 8.0 kWh for all screen sizes. EPA has applied a continuous line toprovide more balanced requirements across size bins and avoid issues with models that straddle bins.
EPA welcomes feedback on this proposal.

329
330
331
332
333
334
335

In the Draft 2 dataset provided to stakeholders, EPA has identified models that are unique in terms of
Tested Model number with a label in the far right column. Under the ENERGY STAR certification process,Partners may submit the same tested model data more than once to represent either different features(i.e. bezel color) that do not affect energy consumption or different brand names and model numbers forretail and marketing purposes. EPA removes models from its analysis that may be repetitive to avoid
skewing the results. EPA has clarified this analysis further by referring specifically to 'unique' models that
represent a unique tested model number.

336
337
338

3.3.3

For all Monitors, Calculated TEC (ETEC) in kWh shall be less than or equal the calculation of
Maximum TEC (ETEC_MAX) with the applicable allowances and adjustments (applied at most once)
per Equation 3.

339

Equation 3: Total Energy Consumption Requirement for Monitors

340
341
342
343
344
345
346
347
348
349
350
351
352

𝐸𝑇𝐸𝐶 ≤ (𝐸𝑇𝐸𝐶_𝑀𝐴𝑋 + 𝐸𝐸𝑃 + 𝐸𝐴𝐵𝐶 + 𝐸𝑁 + 𝐸𝑇 + 𝐸𝐶 ) × 𝑒𝑓𝑓𝐴𝐶_𝐷𝐶

353
354
355

Where:










3.3.4

ETEC is TEC in kWh calculated per Equation 1;
ETEC_MAX is the Maximum TEC requirement in kWh calculated per Equation 2;
EEP is the enhanced performance display allowance in kWh per Section 3.3.4;
EABC is the Automatic Brightness Control allowance in kWh per Equation 6;
EN is the Full Network Connectivity allowance in kWh per Table 1;
ET is the Touch Technology allowance in kWh per Equation 7;
EC is the curved Display allowance in kWh per Equation 8; andeffAC_DC is the standard adjustment for ac-dc power conversion losses that occur at the device
powering the Display, and is 1.0 for Ac-powered Displays and 0.85 for Displays with Standard dc.

For Monitors meeting the enhanced performance display (EPD) requirements below, the energy
allowance in Equation 4 shall be applied to the Total Energy Consumption requirement inEquation 3:

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 9 of 16

356
357
358

i.

Contrast ratio of at least 60:1 measured at a horizontal viewing angle of at least 85° from theperpendicular on a flat screen and at least 83° from the perpendicular on a curved screen,with or without a screen cover glass;

359

ii.

A native resolution greater than or equal to 3.6 megapixels (MP); and360

iii. Color Gamut greater than or equal to 32.9% of CIE LUV.

361

Equation 4: Calculation of Energy Allowance for Enhanced Performance Displays

362
363
364
365
366
367
368
369

𝐸𝐸𝑃 = 0.14 × 𝐺
Where:



EEP is the enhanced performance display energy allowance in kWh
G is Color Gamut expressed as a percentage of CIE LUV

Note: A model supporting greater than 99% of the sRGB color space translates to 32.9% of CIE LUV
and a model supporting greater than 99% of Adobe RGB translates to 38.4% of CIE LUV.

370
371
372
373
374
375
376
377

Note: In response to Draft 1, stakeholders suggested EPA develop a continuous function to apply to anenergy allowance for the variable Color Gamut instead of applying two separate discrete allowances.
EPA reviewed the dataset and analyzed a select group of models with the percentage Color Gamut
reported correctly. EPA found that many models did not have Color Gamut accurately reported to CIE
LUV space and it was therefore unable to assess the full set of models. EPA found no significant
relationship between Color Gamut and power for models with Total Native Resolution below 3.6
megapixels. Further a substantial amount of models below 3.6 megapixels are able to meet the Draft 2
proposed energy requirements without an additional allowance.

378
379
380
381

EPA is, therefore, proposing to raise the minimum Total Native Resolution requirement from 2.6 to 3.6
megapixels for models to access the enhanced performance display allowance. Further, in Draft 2, EPA
is proposing to apply an enhanced performance allowance based on a continuous function of color
gamut. EPA welcomes feedback on this proposal.

382
383
384

EPA proposes maintaining the viewing angle contrast requirement as it is present in enhanced performing
displays dedicated to niche applications as compared to more mainstream models that may offer higher
color coverage but poor off-angle viewing.

385
386
387
388
389
390
391

EPA did not receive model specific data indicating the monitors marketed for gaming functions demand
more power in On Mode. However, through a web search of a subset of models, EPA did identify sevenmodels marketed for gaming, of which three models meet the proposed Draft 2 criteria. Further, EPA
received no feedback on how to define gaming monitors. As such, the Agency has not proposed anallowance for gaming in the Draft 2 specification. One stakeholder did comment that gaming monitors use“double the logic power” and “reduce transmittance,” however, no model level data was provided tosupport these statements.

392
393
394
395
396
397
398
399
400
401
402

EPA received stakeholder comments regarding HDR functionality. The existing ENERGY STAR displays
test method does not have procedure in place to assess displaying native or upscaled HDR content andwould require a substantial revision and review process. Prior to the launch of the Version 9 specification
development, EPA and DOE will continue to monitor the current development of HDR test procedures led
by other organizations including CLASP and consider a possible future revision to the ENERGY STAR
test method. EPA and stakeholders have also considered the issue of HDR under the recent Version 8
specification development process for TVs completed in February 2018. In the Version 8 televisions
specification, EPA has included a data reporting requirement for partners to report power consumption of
the TV when HDR upscaling function is enabled. These data should help inform how HDR upscaling may
affect power consumption of Monitors and Signage Displays and shall be considered in the Version 9
specification.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 10 of 16

403
404
405
406
407

To date, TVs with HDR capability have not required additional power allowances or consideration to meetthe ENERGY STAR specification power requirements and EPA has received no specific model data for
Monitors indicating that HDR capability leads to more power demand under the ENERGY STAR test
procedures. Further, EPA continues to welcome market data that indicates how prevalent HDR content
viewing is among Monitors in the field.

408
409
410
411

3.3.5

For monitors with Automatic Brightness Control (ABC) enabled by default, an energy allowance(EABC), as calculated per Equation 6, shall be added to ETEC_MAX in Equation 3, if the On Modepower reduction (RABC), as calculated per Equation 5, is greater than or equal to 20%.

412

Equation 5: Calculation of On Mode Reduction with ABC Enabled by Default

413

𝑃300 , 𝑃12
𝑅𝐴𝐵𝐶 = 100% × (
)
𝑃300

414
415
416
417
418
419
420

Where:

RABC is the On Mode percent power reduction due to ABC;
P300 is the On Mode power in watts, as measured at an ambient light level of 300 lux in Section 6.4 of
the Test Method; andP12 is the On Mode power in watts, as measured at an ambient light level of 12 lux in Section 6.4 of
the Test Method.

421

Equation 6: Monitors ABC Energy Allowance (EABC) for Monitors

422

𝐸𝐴𝐵𝐶 = 0.05 × 𝐸𝑇𝐸𝐶_𝑀𝐴𝑋

423
424
425
426
427
428

Where:



3.3.6

429

EABC is the energy allowance for Automatic Brightness Control in kWh; andETEC_MAX is the Maximum TEC in kWh, per Equation 2.

Products with Full Network Connectivity confirmed in Section 6.7 of the ENERGY STAR Test
Method shall apply the allowance specified in Table 1.
Table 1: Full Network Connectivity Energy Allowance (EN) for Monitors
EN (kWh)
2.9

430
431

Note: EPA is proposing to remove the Occupancy Sensor allowance for Computer Monitors as there are
no data indicating that the presence of such feature will draw significantly more power.

432
433

3.3.7

Products tested with Touch Technology active in On Mode shall apply the allowance specified in
Equation 7.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 11 of 16

434

Equation 7: Energy Allowance for Touch Technology (ET) for Monitors

435

𝐸𝑇 = 0.15 × 𝐸𝑇𝐸𝐶_𝑀𝐴𝑋

436
437
438

Where:


ET is the energy allowance for Touch Technology in kWh; andETEC_MAX is the Maximum TEC in kWh, per Equation 2.

439
440
441
442

Note: In Draft 2, EPA proposes a revision to the energy allowance for monitors with touch technology
from 20% in Draft 1 to 15% percent of 𝐸𝑇𝐸𝐶_𝑀𝐴𝑋 . A 15% allowance allows 22% of the models with touchenabled by default to meet the energy requirements with another several models within 2% of therequirements.

443

Equation 8: Monitors Curved Display Energy Allowance (EC) for Monitors

444

𝐸𝐶 = 0.05 × 𝐸𝑇𝐸𝐶_𝑀𝐴𝑋

445
446
447
448

Where:
EC is the energy allowance for curved Displays in kWh; andETEC_MAX is the Maximum TEC in kWh, per Equation 2Error! Reference source not found..

449
450
451
452
453
454
455

Note: In response to Draft 1, one stakeholder provided panel data indicating that curved Monitors
consume more power relative to their flat counterparts. EPA identified four curved Monitors in the existing
ENERGY STAR dataset. The four models did not meet the Draft 2 proposed energy requirements without
an allowance. In Draft 2, EPA is proposing an allowance of 5% for curved displays based on which results
in one out of the EPA dataset four curved models meeting the proposed Draft 2 criteria. EPA welcomesstakeholder feedback on this proposal and requests test data submission for curved models that are notcurrently ENERGY STAR certified.

456

3.4

Tiled Display Systems

457
458

3.4.1

Tiled Display Systems shall meet the Signage Display On Mode criteria for the total screen areaof the Maximum Tiled Configuration.

459
460
461
462
463
464
465
466

Note: The total Screen Area of 4 x 4 Tiled Displays System of individual 42-inch diagonal screen
size (height 23.3 inches and length 41.5 inches) displays is calculated as (2 x 23.3’’) x (2 x 41.5’’)
equal to 3867.8 square inches. The Tiled Display System shall meet the On Mode criteria for a
3,867.8 square inch Signage Display.

Note: EPA is proposing to assess the total combined screen area of a Tiled Display System as it isprimarily intended to display images equivalent to the total area. EPA welcomes feedback on this
proposal as any additional data for these systems in both On Mode and Sleep Mode.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 12 of 16

467
468

3.5

On Mode Requirements for Signage Displays

469
470
471
472
473
474

Note: While EPA did not propose any changes to the On Mode requirements for Signage in Draft 1, theAgency received feedback that the On Mode power limit equation was relatively more stringent for
displays over 65 diagonal inches compared to the relatively lenient criteria for smaller models. In Draft 2,
EPA has revised the limit to recognize top models across varying sizes, luminance, and resolution. The
revised hyperbolic tangent equation has an asymptote of 135 W compared to 125 W in Draft 1 for On
Mode Power minus the luminance allowance. EPA welcomes stakeholder feedback on this proposal.

475
476
477

3.5.1

The Maximum On Mode Power (PON_MAX) in watts shall be calculated per Equation 9.

Equation 9: Calculation of Maximum On Mode Power (PON_MAX) in Watts for Signage Displays

478
479
480
481
482
483
484
485
486

𝑃𝑂𝑁_𝑀𝐴𝑋 = (4.0 × 10−5 × ℓ × 𝐴) + 120 × 𝑡𝑎𝑛ℎ(0.0005 × (𝐴 , 140.0) + 0.03) + 20
Where:



PON_MAX is the Maximum on Mode Power, in watts;
A is the Screen Area in square inches;ℓ is the Maximum Measured Luminance of the Display in candelas per square meter, as measured in
Section 6.2 of the test method; andThe result shall be rounded to the nearest tenth of a watt for reporting.

487
488

Equation 10: On Mode Power Requirement for Signage Displays

489
490
491
492
493
494
495

𝑃𝑂𝑁 ≤ 𝑃𝑂𝑁_𝑀𝐴𝑋 + 𝑃𝐴𝐵𝐶
Where:


PON is On Mode Power in watts, as measured in Section 6.3 or 6.4 of the Test Method;
PON_MAX is the Maximum On Mode Power in watts, per Equation 9; andPABC is the On Mode power allowance for ABC in watts, per Equation 11.

496
497
498

3.5.2

499
500

Equation 11: Calculation of On Mode Power Allowance for Signage Displays with ABC Enabled by
Default

501

𝑃𝐴𝐵𝐶 = 0.05 × 𝑃𝑂𝑁_𝑀𝐴𝑋

502
503
504
505

For Signage Displays with ABC enabled by default, a power allowance (PABC), as calculated per
Equation 11, shall be added to PON_MAX, as calculated per Equation 10, if the On Mode power
reduction (RABC), as calculated per Equation 5, is greater than or equal to 20 percent.

Where:


PABC is the Measured On Mode Power allowance for ABC in watts; and
PON_MAX is the Maximum On Mode Power requirement in watts.

506

3.6

Sleep Mode Requirements for Signage Displays

507
508
509

3.6.1

Measured Sleep Mode Power (PSLEEP) in watts shall be less than or equal the sum of theMaximum Sleep Mode Power Requirement (PSLEEP_MAX) and any allowances (applied at mostonce) per Equation 12.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 13 of 16

510

Equation 12: Sleep Mode Power Requirement for Signage Displays

511
512
513
514
515
516
517
518
519

𝑃𝑆𝐿𝐸𝐸𝑃 ≤ 𝑃𝑆𝐿𝐸𝐸𝑃𝑀𝐴𝑋 + 𝑃𝑁 + 𝑃𝑂𝑆 + 𝑃𝑇
Where:







520

PSLEEP is Measured Sleep Mode Power in watts;
PSLEEP_MAX is the Maximum Sleep Mode Power requirement in watts per Table 2;
PN is the Full Network Connectivity allowance in watts per Table 3;
POS is the Occupancy Sensor allowance in watts per Table 4; andPT is the Touch allowance in watts per Table 4.

Table 2: Maximum Sleep Mode Power Requirement (PSLEEP_MAX) for Signage Displays
PSLEEP_MAX(watts)
0.5

521
522
523

3.6.2

524

Products with Full Network Connectivity confirmed in Section 6.7 of the ENERGY STAR Test
Method shall apply the allowance specified in Table 3.
Table 3: Full Network Connectivity Allowance for Signage Displays
PN(watts)
3.0

525
526
527

3.6.3

528

Products tested with an Occupancy Sensor or Touch Technology active in Sleep Mode shallapply the allowances specified in Table 4.
Table 4: Additional Functions Sleep Mode Power Allowance for Signage Displays
Type
Occupancy Sensor
POS
Touch Functionality
PT(applicable only to
Signage Displays where
screen size is greaterthan 30 inches)

Screen Size(in)

Allowance(watts)

All

0.3

≤ 30

0.0

> 30

1.5

529

3.7

Off Mode Requirements for all Displays

530
531
532

3.7.1

A product need not have an Off Mode to be eligible for certification. For products that do offer Off
Mode, measured Off Mode power (POFF) shall be less than or equal to the Maximum Off Mode
Power Requirement (POFF_MAX) in Table 5.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 14 of 16

533

Table 5: Maximum Off Mode Power Requirement (POFF_MAX)
POFF_MAX(watts)
0.5

534
535

3.8

Luminance Reporting Requirements

536
537

3.8.1

Maximum Reported and Maximum Measured Luminance shall be reported for all products; As­
Shipped Luminance shall be reported for all products except those with ABC enabled by default.

538
539
540
541

Note: Products intended for sale in the US market are subject to minimum toxicity and recyclability
requirements. Please see ENERGY STAR® Program Requirements for Displays: Partner Commitments
for details.

542

4 TEST REQUIREMENTS

543

4.1

Test Methods

544

4.1.1

Test methods identified in Table 6 shall be used to determine certification for ENERGY STAR.

545

Table 6: Test Methods for ENERGY STAR Certification
Product Type

Test Method

All Product Types andScreen Sizes

ENERGY STAR Test Method for Determining Display Energy –Rev. August-2018

Enhanced Performance
Displays

International Committee for Display Metrology (ICDM)
Information Display Measurements Standard – Version 1.03

Displays Claiming Full
Network Connectivity

CEA-2037-A, Determination of Television Set Power
Consumption

546
547

4.2

Number of Units Required for Testing

548

4.2.1

One unit of a Representative Model, as defined in Section 1, shall be selected for testing.

549
550
551

4.2.2

For certification of a Product Family, the product configuration that represents the worst-casepower demand for each product category within the Product Family shall be considered theRepresentative Model.

552

4.3

International Market Qualification

553
554

4.3.1

Products shall be tested for qualification at the relevant input voltage/frequency combination foreach market in which they will be sold and promoted as ENERGY STAR.

555

5 USER INTERFACE

556
557
558

5.1.1

Manufacturers are encouraged to design products in accordance with the user interface standard,IEEE P1621: Standard for User Interface Elements in Power Control of Electronic Devices
Employed in Office/Consumer Environments. For details, see http://energy.lbl.gov/controls/.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 15 of 16

559

6 EFFECTIVE DATE

560
561
562
563

6.1.1

564

Note: EPA intends to finalize the Version 8.0 Displays specification by the end of 2018.

565
566
567
568
569

6.1.2

570
571

7 CONSIDERATIONS FOR FUTURE REVISIONS

572
573
574
575
576
577
578
579

7.1.1

Standby-Active, High Mode: Similar to future revisions of the ENERGY STAR Televisions
specification, EPA and DOE are interested in learning more about Standby-Active, High Mode or
Displays with Sleep Modes that demand higher power draw because they actively runningcomponents to reduce latency from Sleep to On Mode, download software updates, or process
sensor data. This issue is particularly pertinent with interactive displays that either have a remoteor touch screen where the use expects Display to display content without delay. EPA anticipates
exploring this issue and potential power limits and duty cycle requirements in the next
specification revision.

580
581
582

7.1.2

HDR: Similar to future revisions of the ENERGY STAR Televisions specification, EPA will monitor
the market to assess the extent to which opportunities exist to improve the energy efficiency of
the HDR upscaling features

583
584
585
586

7.1.3

Revisions to Test Content: As displays technologies continue to evolve, DOE and EPA support
external stakeholder efforts to revise test content (i.e. test clips) to better account for how
products perform under more realistic consumer viewing conditions, especially with regard to
UHD (4K) Content and Native HDR Content.

Effective Date: The Version 8 ENERGY STAR Display specification shall take effect on TBD. To
qualify for ENERGY STAR, a product model shall meet the ENERGY STAR specification in effecton its date of manufacture. The date of manufacture is specific to each unit and is the date on
which a unit is considered to be completely assembled.

Future Specification Revisions: EPA reserves the right to change this specification should
technological and/or market changes affect its usefulness to consumers, industry, or theenvironment. In keeping with current policy, revisions to the specification are arrived at throughstakeholder discussions. In the event of a specification revision, please note ENERGY STAR
certification is not automatically granted for the life of a model.

ENERGY STAR Program Requirements for Displays – Eligibility Criteria

Page 16 of 16