Draft Evaluation Materials

Draft evaluation materials prepared by independent evaluators will be posted for review on this page, including:

Annual evaluation reports;
Annual evaluation plans;
Evaluation research study results; and
Cost-effectiveness summary reports.

Only the first version of draft evaluation reports are posted on the SAG website. Revised versions are circulated by independent evaluators to parties that submitted comments on the first version. Draft reports are removed when finalized, and posted on various final evaluation report pages (see page links above in “Go To page” section above).

Draft Evaluation Reports for SAG Review

Ameren Illinois Company 2022-2025 EE Portfolio Summary Impact Evaluation Report
- Comments due Wednesday, July 15, 2026
- Send comments to Zach Ross, E Source ([email protected])
ComEd 2022-2025 EE Portfolio Summary Impact Evaluation Report
- Comments due Friday, August 7, 2026
- Send comments to Charles Ampong, Guidehouse ([email protected])
Nicor Gas 2025 Summary Savings and Cost-Effectiveness Memo
- Comments due Thursday, August 13, 2026
- Send comments to Charles Ampong, Guidehouse ([email protected])
Peoples Gas and North Shore Gas 2025 Summary Savings and Cost-Effectiveness Memo
- Comments due Friday, August 14, 2026
- Send comments to Charles Ampong, Guidehouse ([email protected])
Nicor Gas 2025 Energy Efficiency Economic Impact Report
- Comments due Friday, August 14, 2026
- Send comments to Charles Ampong, Guidehouse ([email protected])
ComEd 2022-2025 Summary Cost Effectiveness Analysis Report
- Comments due Friday, August 21
- Send comments to Charles Ampong, Guidehouse ([email protected])
Peoples Gas 2025 Energy Efficiency Economic Impact Report
- Comments due Friday, August 21
- Send comments to Charles Ampong, Guidehouse ([email protected])
North Shore Gas 2025 Energy Efficiency Economic Impact Report
- Comments due Friday, August 21
- Send comments to Charles Ampong, Guidehouse ([email protected])

Draft IL-TRM Deviation Memo – 2026

Memo from Guidehouse to SAG: Free Ridership Protocol Deviation from Illinois Statewide TRM, Version 14.0 (Feb. 24, 2026)
- Comments due Thursday, March 12, 2026
- Send comments to June Fang, Guidehouse ([email protected]).

Draft IL-TRM Deviation Memos – 2025

Memo from Guidehouse to SAG: Free Ridership Protocol Deviation from Illinois Statewide Technical Reference Manual, Version 13.0
- Comments due Thursday, March 20
- Send comments to Christopher Frye, Guidehouse ([email protected])
Memo from Opinion Dynamics to SAG: Deviation from IL-TRM Midstream Free-Ridership Protocol for 2025 Research
- Comments due Wednesday, May 14
- Send comments to Malena Hernandez ([email protected])

Draft IL-TRM Deviation Memo – 2024

Memo from Guidehouse to SAG: Free Ridership Protocol Deviation from Illinois Statewide Technical Reference Manual, Version 12.0 – Comments due Monday, November 18, 2024
- Send comments to Christopher Frye, Guidehouse ([email protected])

Draft Evaluation Materials – Previously Available for Review

The comment deadline has passed on the draft materials linked below. Draft materials will be removed from this page once the final version is available.

Nicor Gas 2025 Draft Evaluation Plan

Peoples Gas & North Shore Gas 2025 Draft Evaluation Plan

Memo from Guidehouse to SAG: Residential Prescriptive Free Ridership Protocol Deviation from Illinois Statewide Technical Reference Manual, Version 12.0

2022 Cost Effectiveness Test Results for Jointly Implemented Programs (ComEd, Nicor Gas, Peoples Gas and North Shore Gas)

Apex Analytics Memo to ComEd: ENERGY STAR Retail Products Platform Baseline Forecast

Peoples Gas 2021 Energy Efficiency Portfolio Economic Impact Reporting

North Shore Gas 2021 Energy Efficiency Portfolio Economic Impact Reporting

Peoples Gas/North Shore Gas Non-Energy Impacts Economic Analysis

Nicor Gas Non-Energy Impacts Economic Analysis

Peoples Gas & North Shore Gas Business Prescriptive Rebate Program Process Research

Memo from Guidehouse and Opinion Dynamics to ComEd, Nicor Gas, Peoples Gas & North Shore Gas: Adjusting Home Energy Report Program Savings for the Effects of COVID-19 – Approaches and Considerations (Oct. 16, 2020)

ComEd Standard CY2019 T12 Research Memo