March 2016 - IRIS v4.0 Released (current version)
Immaterial change. Minor revision to definition language for clarity.
March 2014 - IRIS v3.0 Released
Material change. Energy Savings from Products Sold (PI7623) replaced Energy Savings (PI7623). Metric name and definition language modified to provide clarity based on best practices and standard guidance.
November 2011 - IRIS v2.2 Released
February 2011 - IRIS v2.1 Released
September 2010 - IRIS v2.0 Released
Material change. Energy Savings (PI7623) replaced Energy Savings: Electricity (EE9). Metric modified to combine multiple energy sources.
September 2009 - IRIS v1.0 Released
New metric. Energy Savings: Electricity (EE9) developed via Original IRIS Working Group.