| ACEEE |
American Council for an Energy-Efficient Economy |
| AIA |
American Institute of Architects |
| ANSI |
American National Standards Institute |
| ARRA |
America Recovery and Reinvestment Act of 2009 |
| ASHRAE |
formerly referred to as American Society of Heating, Refrigerating, and Air Conditioning Engineers |
| ASTM |
American Society for Testing and Materials |
| BCAP |
Building Codes Assistance Project |
| BCC |
Building Code Council |
| BECP |
Building Energy Codes Program |
| BIM |
building information modeling |
| BTO |
U.S. Department of Energy, Building Technologies Office (formerly known as the Building Technologies Program (BTP)) |
| Btu |
British thermal units |
| CEC |
California Energy Commission |
| CSI |
Construction Specifications Institute |
| DOE |
U.S. Department of Energy |
| DSIRE |
Database of State Incentives for Renewables and Efficiency |
| EISA |
Energy Investment and Security Act of 2007 |
| GBI |
Green Building Initiative |
| HERS |
Home Energy Rating System |
| HVAC |
heating, ventilation, and air conditioning |
| ICC |
International Code Council |
| IECC |
International Energy Conservation Code |
| IES |
Illuminating Engineering Society |
| IESNA |
Illuminating Engineering Society of North America |
| IgCC |
International Green Construction Code |
| LEED |
Leadership in Energy and Environmental Design |
| MEEA |
Midwest Energy Efficiency Alliance |
| NAHB |
National Association of Home Builders |
| NBI |
New Buildings Institute |
| NEEA |
Northwest Energy Efficiency Alliance |
| NEEP |
Northeast Energy Efficiency Partnerships |
| NFRC |
National Fenestration Rating Council |
| OCEAN |
Online Code Environment and Advocacy Network |
| PNNL |
Pacific Northwest National Laboratory |
| RECA |
Responsible Energy Codes Alliance |
| RESNET |
Residential Energy Services Network |
| SEEA |
Southeast Energy Efficiency Alliance |
| SEO |
State Energy Office |
| SHGC |
solar heat gain coefficient |
| SWEEP |
Southwest Energy Efficiency Project |
| SWH |
service water heating |
| USGBC |
U.S. Green Building Council |
| WBDG |
Whole Building Design Guide |
