Analysis for Previous Commercial Codes

The following national analyses are available for previous editions of ASHRAE Standard 90.1:

The tables below contains additional state-level analysis:

State Cost-effectiveness Analysis for ASHRAE 90.1-2013
Alabama Alaska Arizona Arkansas
California* Colorado Connecticut Delaware
District of Columbia Florida Georgia Hawaii
Idaho Illinois Indiana Iowa
Kansas Kentucky Louisiana Maine
Maryland Massachusetts Michigan Minnesota
Mississippi Missouri Montana Nebraska
Nevada New Hampshire New Jersey New Mexico
New York North Carolina North Dakota Ohio
Oklahoma Oregon* Pennsylvania Rhode Island
South Carolina South Dakota Tennessee Texas
Utah Vermont Virginia Washington*
West Virginia Wisconsin* Wyoming  
*The structure of this state's code differs substantially from that of ASHRAE 90.1 or the IECC equivalent.
State Cost-effectiveness Analysis for ASHRAE 90.1-2010
Alabama Alaska* Arizona* Arkansas
California* Colorado Connecticut Delaware
District of Columbia Florida* Georgia Hawaii*
Idaho* Illinois* Indiana* Iowa
Kansas* Kentucky Louisiana* Maine*
Maryland* Massachusetts Michigan* Minnesota*
Mississippi* Missouri* Montana Nebraska
Nevada* New Hampshire* New Jersey New Mexico*
New York North Carolina North Dakota* Ohio*
Oklahoma Oregon* Pennsylvania* Rhode Island
South Carolina South Dakota* Tennessee* Texas
Utah Vermont* Virginia Washington*
West Virginia* Wisconsin Wyoming*  
*Cost Analysis not planned for this state.