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PSE Home Energy Reports Program - 2017 Impact Evaluation - Final Report

Created 5/2/2018 by Jim Perich-Anderson
Updated 7/2/2018 by Jim Perich-Anderson
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Title: PSE Home Energy Reports Program – 2017 Impact Evaluation – Final Report                                                               

 This document combines DNV GL’s  PSE Home Energy Reports Program - 2017 Impact Evaluation – Final Report, and Puget Sound Energy’s Evaluation Report Response (ERR).  

 In accordance with WUTC conditions, all PSE energy efficiency programs are evaluated by an independent, third party evaluator.  Evaluations are planned, conducted and reported in a transparent manner, affording opportunities for Commission and stakeholder review through the Conservation Resource Advisory Group (CRAG) and reported to the UTC.  Evaluations are conducted using best-practice approaches and techniques.

 PSE program managers and evaluation staff prepare an ERR upon completion of an evaluation of their program. The ERR addresses and documents pertinent adjustments in program metrics or processes subsequent to the evaluation.

 Please note that this is an evaluation of the program as it operated during the 2017 program year.

 This and all PSE evaluations are posted to Conduit Northwest.  To view an electronic copy and to leave comments, visit https://conduitnw.org/Pages/EditFile.aspx?rid=4415.

 Puget Sound Energy (PSE) implemented the Home Energy Reports (HER) program in 2008. The HER program delivers customized, periodic reports on energy consumption to participating households that compare the households’ energy consumption to that of similar neighboring homes, and provides personalized tips on how to save energy based on the energy usage and house profile.

PSE structured the program as a randomized controlled trial (RCT).  The RCT experimental design randomly assigns a population of interest to control and treatment groups. Due to this random assignment, the only differentiating factor between the two groups is the receipt of the Home Energy Reports. Thus, the approach produces an unbiased estimated of the change in consumption with a high level of statistical precision due to the treatment. Program energy savings are established by an independent evaluation, based on differences in energy use between these two groups.

This evaluation also investigated differences in energy savings behaviors between participant subgroups:

  • Electric-Only User Group;
  • High Relative Energy User Group
  • Non-Urban Group
  • Refill Group
  • Suspended HER Participants Group

 Key findings:

 1) All groups who received HERs in 2017 achieved credited savings that are statistically significant. Household savings for long-time participants (‘Legacy Current’ group) average 3.1% for electric and 1.6% for per household; savings to date for recently-added participants (‘Expansion’ groups) are less, but ramping over time.

2) HER-related savings persist after customers stop receiving the report, though savings decline over time.

3) The recently added expansion group has lower savings overall, though the savings are increasing over time;

4) Over time, treatment households achieve deeper electric savings from participating in additional PSE programs than control households.

Posted By: Jim Perich-Anderson 07/02/18 on 09:19 AM (Pacific Time)

Previous Versions (2)
Version 2.0 05/02/18 08:27:AM by Jim Perich-Anderson
Version 1.0 05/02/18 08:25:AM by Jim Perich-Anderson
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Sector: Residential
Function: Evaluation
Resources: Reports


Associated Communities:

Behavior Based Energy Efficiency, Northwest Research Group

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