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Measuring and Measuring and Reducing Reducing Set Top Box Power Use” Set Top Box Power Use” International Stakeholder International Stakeholder Workshop Workshop June 29, 2005 June 29, 2005 By Noah Horowitz By Noah Horowitz Senior Scientist Senior Scientist NRDC NRDC [email protected]

“Measuring and Reducing Set Top Box Power Use”

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“Measuring and Reducing Set Top Box Power Use”. International Stakeholder Workshop June 29, 2005 By Noah Horowitz Senior Scientist NRDC [email protected]. Today’s Meeting. Go over energy and environmental impacts of set top box power use. - PowerPoint PPT Presentation

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Page 1: “Measuring and Reducing  Set Top Box Power Use”

““Measuring and Reducing Measuring and Reducing Set Top Box Power Use”Set Top Box Power Use”

International Stakeholder WorkshopInternational Stakeholder Workshop

June 29, 2005June 29, 2005

By Noah HorowitzBy Noah Horowitz

Senior ScientistSenior Scientist

NRDCNRDC

[email protected]

Page 2: “Measuring and Reducing  Set Top Box Power Use”

Today’s Meeting

• Go over energy and environmental impacts of set top box power use.

• Explore feasibility of reducing overall box energy use, especially during extended periods of set top box inactivity.

• Share information on research and policy developments from around the world.

• Discuss test methods, operating modes, and performance metrics.

• Create process for ongoing communication and collaboration.

Page 3: “Measuring and Reducing  Set Top Box Power Use”
Page 4: “Measuring and Reducing  Set Top Box Power Use”

Who is NRDC?

• Natural Resources Defense Council (NRDC)

• Environmental advocacy group with more than 600,000 members.

• Air/Energy program interested in reducing global warming pollution and protecting public health.

• Long track record of collaboration with industry and policy makers on energy efficiency (monitors, soda machines, computers, lighting).

Page 5: “Measuring and Reducing  Set Top Box Power Use”

Energy Efficiency

“Deliver same level of performance

while using less energy”

• Efficiency gains through improved designs, more efficient components, etc.

• Reduce user’s operating costs. Extremely cost effective.

• NO CONSUMER SACRIFICE

• Policies should be performance based, not prescriptive. Encourage innovation.

Page 6: “Measuring and Reducing  Set Top Box Power Use”

Today’s Scope

• Cable and satellite set top boxes– Analog and high definition (HD)– Multifunction including built-in digital video recorders

(DVRs)– Focus on new boxes to be deployed, not retrofitting

existing ones

• For today, exclude:– DTAs – digital TV adapters (digital to analog)– Game Box Consoles (X-Box, etc.)– CableCARDs integrated in TVs

Page 7: “Measuring and Reducing  Set Top Box Power Use”

Why Set Tops?

• More than 80% of U.S. homes have cable or satellite TV.

• Many of these customers have 1 or more set top boxes.

• Per box power use increasing because new boxes have added functionality (dual tuners, recording/storage capability, HD, etc.)

• Number of new full featured boxes expected to grow dramatically.

• Set tops consume ~ 1% of national residential electricity use and projected to increase by up to 75% by 2008.

Page 8: “Measuring and Reducing  Set Top Box Power Use”

Highlights of NRDC/Ecos Research

• Set top boxes draw between 10 and 30+ Watts all day long.

• Pressing “off” button has no significant impact on power use.

• Most boxes do not have sleep mode. (always “fully on”)

• Annual power consumption of new full featured HD boxes with DVRs approximately 200-300 kWh/yr.

• Household set top box annual energy use (for homes with multiple boxes) approaching that of a new refrigerator.

Page 9: “Measuring and Reducing  Set Top Box Power Use”

Annual Energy Use of Measured Cable/Satellite Set Top Boxes

0

50

100

150

200

250

300

350

400

450

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An

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Use

(kW

h)

Cable Convertersn = 13Satellite

Convertersn = 7

Mutifunction Cable/Satellite DVRs

n = 6

HD Cable/Satellite Converters

n = 5

Page 10: “Measuring and Reducing  Set Top Box Power Use”

Set Top Environmental Overview

• Power plants largest source of CO2, mercury emissions

• If no efficiency gains made in new set top box designs:

2005 2008

National Energy Use

(billion kWh per year) 13.3 23.6

User Electricity Bills

(billion USD per year) 1.1 2.0

Carbon Dioxide Emissions

(million tons per year) 8.9 15.8

Number of 500 MW Power Plants 3 > 5

Page 11: “Measuring and Reducing  Set Top Box Power Use”

Set Top Box (STB) Primer

• To date, service provider (eg Time Warner, Direct TV, etc.) buys the box and gives or leases the box to their customer.

• Customer, not box purchaser, pays the electric bill (“split incentive”).

Page 12: “Measuring and Reducing  Set Top Box Power Use”

Unique Challenges

Service providers need to maintain continuous connectivity to the boxes in their system

– Send updates – program guide, encryption codes (prevent theft)

– Ability for two way communication (eg. pay per view

Page 13: “Measuring and Reducing  Set Top Box Power Use”

Low Power Mode Challenge

• Box not being used by the consumer for most of the day. Typical use 4 to 6 hours/day.

• Can box enter low power mode due to user action or after extended period of inactivity, but still “wake” in response to head end or user signal?

• Good analogies – cell phones (uses a lot less power during standby, but always connected and ready to take a call; computer sleep mode).

Page 14: “Measuring and Reducing  Set Top Box Power Use”

More Low Power Mode Thoughts

• Box should enter this mode when:

– User pushes the STB power button to off or hits STB remote (unlikely)

– After extended period of inactivity– After completing service provider induced

update– After recording pre-scheduled show

• TiVo type issues – hard drive spinning, and speculative recording

Page 15: “Measuring and Reducing  Set Top Box Power Use”

Efficiency Gains May Require

• STB modifications

• “Head-end” modifications- Wake and sleep protocols developed and used

• Will likely need changes in both software and hardware. Proactive coordination between various stakeholders will be needed.

Page 16: “Measuring and Reducing  Set Top Box Power Use”

The Potential

If US adopted a similar approach to Australia, we could:

– Avoid the need for 3 large (500 MW) power plants

– Prevent 10 million tons/yr of CO2 emissions, a major global warming pollutant. This is equal to taking all the cars off the road from a city the size of Philadelphia for a year.

Page 17: “Measuring and Reducing  Set Top Box Power Use”

Lots of Worldwide Activity

• EU working to create Code of Conduct.

• Australians have established mandatory performance standards (MEPS)

• China very interested in this topic. Current focus DTAs, more complex set tops next.

• EPA ENERGY STAR – voluntary labeling program. Current spec suspended, planning to reissue in future.

• Consumer Electronics Association (CEA) Working Group created

Page 18: “Measuring and Reducing  Set Top Box Power Use”

Worldwide Harmonization

• Recognize national markets around the world vary considerably as do local broadcasting requirements. One size fits all spec probably unrealistic.

• To the extent possible worldwide harmonization desirable for modes, test methods, capabilities, etc.

• Goal is to reduce burden on STB manufacturers and to achieve energy savings at lowest cost

Page 19: “Measuring and Reducing  Set Top Box Power Use”

Today’s Ground Rules

• Today is not a negotiation or an attempt to set power levels.

• Dialogue to focus on test methods, modes, and what is possible.

• Aim for constructive discussion/strive for collaboration

• Please participate. Lots of meeting dedicated to open discussion.

• Avoid talking about specific pricing, trades secrets, etc.

Page 20: “Measuring and Reducing  Set Top Box Power Use”

Link to NRDC/Ecos Paper

• http://www.nrdc.org/air/energy/energyeff/ienergyeff.asp.

• Includes raw data on set top box field measurements