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Measure: Use Advanced Timer-Controlled Power Strips to Control Plug Loads

Building Size: 5,000 gsf
Climate Zone: Hot - Humid

Measure: Use Advanced Timer-Controlled Power Strips to Control Plug Loads

Building Size: 5,000 gsf
Climate Zone: Hot - Humid
Use Advanced Timer-Controlled Power Strips to Control Plug Loads
Measure Simple Payback (years) Approximate Capital Cost ($) Annual Energy Savings (kBtu/sf) Annual Energy Savings (kBtu/yr) Annual Cost Savings ($/sf) Annual Cost Savings ($/yr)
Use Advanced Timer-Controlled Power Strips to Control Plug Loads 3 $22 per power strip -- -- -- --

Description:

What Is This Measure?

More than 25% of total energy consumed in US office buildings is used to power plug-in devices, many of which continue to draw power even when turned off. Advanced power strips (APS) that employ pre-programmed timers to de-energize such devices significantly reduce power usage:  26% at workstations and 50% in printer rooms and kitchens.

Special Considerations

Load-sensing and combination controls provided limited energy savings and relatively high simple payback. One reason for this is that when applied to kitchens or printer rooms, load-sensing control aggregates power-state data from APSs in surrounding workstations. Because all workstation APSs are monitored in search of a “master” device whose threshold would de-energize auxiliary devices, “slaves” are de-energized only when all workstations are de-energized, which seldom occurs if occupants are present.

See GSA’s Proving Ground for more details on the field demonstration findings.