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Relevant Data

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)
Implement a retro-commissioning (RCx) package 1-2 $1,500 13.4 67,200 $0.18 $910
Implement a standard retrofit package 4-5 $10,600 29.4 146,800 $0.49 $2,500
Install occupancy sensors to control interior lighting 8-9 $1,900 1.3 6,400 $0.04 $220
Install daylight harvesting sensors 6-8 $2,700 1.5 7,400 $0.08 $390
Widen zone temperature deadband (pneumatic zone controls) 3-4 $1,600 5.5 27,000 $0.08 $420
Lower variable air volume (VAV) box minimum flow setpoints (pneumatic zone controls) 2-3 $900 6.3 31,000 $0.08 $380
Widen zone temperature deadband and add conference room standby control (DDC zone controls) 1-2 $900 6.3 31,000 $0.09 $470
Lower variable air volume (VAV) box minimum flow setpoints and reset duct static pressure (digital zone controls) 6-7 $5,700 8.8 44,000 $0.17 $850
Replace supply fan motor and variable frequency drive (VFD) 3-4 $1,100 2.0 10,000 $0.06 $280
Upgrade to high efficiency lighting 1-3 $25,000 --- --- --- ---
Use Energy Star certified appliances and equipment 1-3 --- --- --- --- ---
Install an energy management and information system (EMIS) 2-4 --- --- --- --- ---
Improve building envelope performance 2-4 --- --- --- --- ---