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It’s Not Easy Being Green: Walgreen’s Net-Zero Energy Store, Evanston, IL

©2013 Walgreen Co. All rights reserved.

To create a showcase for innovative, sustainable, high-performance design at a retail location without altering the operational characteristics of the store in order to make it as highly-scalable as possible. To share this information with the sustainability, architecture, and retail communities in a completely transparent fashion as a means of encouraging the adoption of green building practices wherever reasonably feasible.

Vision

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• First net-zero energy retail store in the US

• LEED Platinum Certification

• Living Building Challenge Net Zero Certification

• Better Building Challenge Showcase project

• Green Chill Platinum certification

• Energy Star

• Open before Thanksgiving 2013

Project goals

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Energy Produced – Energy Consumed > 0

What is “net-zero”?

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• Solar panels

Energy produced

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• Wind turbines

Energy produced

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Energy used

• Geothermal energy

• All LED lighting

• Daylight harvesting

• Natural ventilation

• Automatic dimmers

• Mechanical system

• Revolving door

• Reduce plug loads

• Thermal mass

• Control strategies

• “Ceiling” height

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The Results

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Chicago Average

Oak Park GSHP

Preliminary Energy Model

Detailed Energy Model

0%

20%

40%

60%

80%

100%

120%

Net zero models differ by 30%

Figure 6: Net zero predicted energy use comparison (not including solar and wind energy production)

Why?

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Happy and healthy

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“Walgreens Net Zero Community”