Bullet Points: Wal-Mart Cuts Energy 30%--What Can We Learn From Them?
WAL-MART CUTS ENERGY 30% — WHAT CAN WE LEARN FROM THEM?
Charles Zimmerman (VP, Prototype & New Format Development, Wal-Mart)
• Wal-Mart is committed to building sustainable facilities
• Wal-Mart will make a 20% energy/greenhouse gas reduction in existing stores within the next 7 years
• The company has approximately 6,500 operations worldwide (3,900 in the US and 2,600 internationally)
• The company looked at ways it was using energy and introduced some of the following technological changes:
o Daylight harvesting
o Cool roofing; heat reclaim
o High efficiency heating, ventilation, and air conditioning (HVAC)
o Centralized Enterprise Management Server (EMS)/monitoring
o Active de-humidification
o Exterior Light Emitting Diode (LED) signage
• Future Wal-Mart initiatives include the following:
o Interior LED lighting
o Additional speed fans/motors in HVAC systems
o Variable speed fans/motors and floating pressures (refrigeration)
o Emerging HVAC technologies
o Emerging refrigeration technologies (CO2 secondary loop)
o Rainwater harvesting
o Domestic water conservation
o Construction debris recycling
o Increase in recycled products
o Teaching competitors about Wal-Mart’s success in energy
