• ACH:             Air changes per hour
  
• AEE:              Association of Energy Engineers
• ASHRAE:    American Society of Heating Refrigeration and Air Conditioning Engineers
  
• ASTM:          American Society of Testing and Materials
  
• BAS:               Building automation system
  
• BMS:              Building management system
  
• BEM:              Building energy modeling
  
• BEMP:           Building energy modeling professional
  
• BEPA:            Building Energy Performance Assessment
  
• BESA:            Building energy simulation analyst
  
• BPA:               Bonneville Power Administration
  
• BPI:                Building Performance Institute
  
• Btu:                 British thermal unit
  
• CAD:               Computer aided drafting
  
• CBECS:          US EIA’s Commercial Building Energy Consumption Survey
  
• CDD:               Cooling degree days
  
• CEM:              Certified energy manager
  
• CEUS:            California Commercial End Use Survey
  
• cfm:                Cubic feet per minute
  
• CMVP:          Certified measurement and verification professional
  
• CV:                  Curriculum vitae
  
• CV[RMSE]: Coefficient of variance root mean square error
  
• DDC:               Direct digital control
  
• ECM:              Energy conservation measure
  
• EEPF:             Energy Efficiency Project Framework
  
• EIA:                Energy Information Administration
  
• EIS:                 Energy information system
  
• EMIS:            Energy management and information systems
  
• EPP:               Energy Performance Protocols
  
• EMCS:           Energy management control system
  
• EMS:              Energy management system
  
• ESCo:             Energy service company
  
• ESPC:             Energy savings performance contract
  
• EUI:                Energy utilization index
  
• EVO:               Efficiency Valuation Organization
  
• FDD:               Fault detection and diagnostics
  
• FEMP:           Federal Energy Management Program
  
• FPT:               Functional performance test
  
• HDD:             Heating degree days
  
• HVAC:          Heating, ventilation and air conditioning
  
• ICP:                Investor Confidence Project
  
• IGA:               Investment grade audit
  
• IPMVP:        International Performance Measurement and Verification Protocol
  
• IRR:               Internal rate of return
  
• kW:                kilowatt
  
• kWh:             kilowatt hour
  
• LCCA:           Lifecycle cost analysis
  
• M&V:            Measurement and Verification
  
• MF:                Multifamily
  
• MMBtu:       Million British thermal units
  
• NIST:            National Institute of Standards and Technology
  
• NPV:              Net present value
  
• NYSERDA: New York State Energy Research Development Authority
  
• O&M:             Operations and maintenance
  
• O&P:               Overhead and profit
  
• PE:                  Professional engineer
  
• PFT:               Pre-functional test
  
• QA:                 Quality assurance
  
• SaaS:              Software as a service
  
• SIR:                Savings to investment ratio