AN OVERVIEW OF ENERGY STAR

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AN OVERVIEW OF ENERGY STAR

• Lisa Hopkinson
• University of Bradford

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LIFE CYCLE IMPACTS
Transport
Materials
Recycling
Disposal
Manufacture
Use
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ENERGY STAR

• Voluntary labelling scheme for energy efficient
  office products
• Defines minimum energy criteria
• Database of most energy efficient models
• Only deals with energy IN USE
• Updated every 2-3 years
• www.eu-energystar.org

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LIFE CYCLE ENERGY OF PCS
Source IVF, 2007. Preparatory studies for
Eco-design Requirements of Energy Using Products
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ENERGY STAR STATUS
Category Version Date in effect
Computing equipment V. 5.0 1 July 2009
Displays V. 5.0 30 Oct 2009 (lt30 inches) 30 Jan 2010 (30-60 inches)
Imaging equipment V. 1.1 1 July 2009
Servers V. 1 (Final draft) To be decided
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UNIVERSITY OF SHEFFIELD ICT ENERGY BREAKDOWN
Desktops dominate
Analysis by Chris Cartledge, 2008
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ENERGY STAR V. 5.0 for Computing Equipment

• Covers desktop computers, gaming consoles,
  integrated desktop computers, notebook computers,
  small-scale servers, thin clients, and
  workstations.
• Efficient power supply (internal external)
  required.
• Defines minimum energy performance standards

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TYPICAL ENERGY CONSUMPTION (TEC)

• Minimum annual energy consumption based on
  weighted time spent in each mode (idle, sleep,
  off). For desktops and notebooks
• ETEC (8760/1000) x
• (Poff x Toff Psleep x Tsleep Pidle x Tidle)

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ENERGY STAR ENERGY PERFORMANCE

• Desktops Notebooks
• Category A 148kWh Category A 40kWh
• Category B 175kWh Category B 53kWh
• Category C 209kWh Category C 88.5kWh
• Category D 234kWh
• Different formulae and performance standards for
  workstations and small servers

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RAISING THE BAR

• Apr 2008 137 models meeting Energy Star 4
• June 2009 875 models meeting Energy Star 4
• 1 July 2009 0 models meeting Energy Star 5

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ENERGY STAR 4.0 vs 5.0

• Energy Star 5, Category B, ETEC 175 kWh/y
• Dell Optiplex 760 Desktop
• ETEC 200 kWh/y (non networked)

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WHOLE LIFE COSTING

• Energy Star 5.0, Category B 175 kWh/y
• Typical Energy Star 4 PC 230 kWh/y
• Over 4 year lifetime (_at_ 12p/kWh)
• Energy Star 5 (Cat B) 84
• Energy Star 4 110
• For 5,000 PCs, saving 130,000

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IMPLICATIONS

• Consider whole life costs of any purchase
• Specify Energy Star compliance
• OR select high efficiency low power PCs e.g.
  desktops based on laptop technology

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THANK YOU!

• For more information contact
• l.m.hopkinson_at_bradford.ac.uk
• Tel [phone]
• www.susteit.org.uk
• www.heepi.org.uk