March 2016 - IRIS v4.0 Released (current version)
March 2014 - IRIS v3.0 Released
Immaterial change. Minor revision to metric name and definition language for clarity.
November 2011 - IRIS v2.2 Released
Immaterial change. Client Organizations Provided New Access (PI2575) replaced Clients Provided New Access - Business (PI2575). Metric name changed to maintain consistency with other aspects of IRIS structure.
February 2011 - IRIS v2.1 Released
September 2010 - IRIS v2.0 Released
Material change. Clients Provided New Access - Business (PI2575) replaced New Access to Energy: Businesses (EE13). Metric modified to increase clarity.
September 2009 - IRIS v1.0 Released
New metric. New Access to Energy - Businesses (EE13) developed via Original IRIS Working Group.