Illinois Energy Efficiency 

Stakeholder Advisory Group

Illinois Statewide Technical Reference Manual


To join the SAG distribution list, please email SAG Facilitation: To join the IL-TRM Technical Advisory Committee and get access to the IL-TRM SharePoint site, please email the Illinois TRM Administrator, VEIC:


Illinois Statewide TRM Workpaper Format 2017

Illinois Net-to-Gross Methods:

Click here for information on Illinois NTG Methods.

Recent Documents:

There is a separate page for each version of the Illinois Statewide Technical Reference Manual (IL-TRM). Click on the links below for more information:

The links below include final versions of the IL-TRM and associated errata, beginning with the most recently completed (Version 6.0):

Policies regarding the TRM and its application, deviation, and updating process:

ICC Dockets related to approval of IL-TRM:

  • 13-0077: Adoption of policies for the IL-TRM
  • 12-0528: Approval of IL-TRM Version 1.0
  • 13-0437: Approval of IL-TRM Version 2.0
  • 14-0189: Approval of IL-TRM Version 3.0
  • 15-0187: Approval of IL-TRM Version 4.0
  • 16-0171: Approval of IL-TRM Version 5.0

Load Shapes References:

Sources and References Documents (Final Version 3.0):

Residential Measure References (zip files):

Other reference files (zip files):