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Project Launch: 04/01/2019
Income Eligible

Partner: Elevate

This market assessment of small residential buildings in the ComEd service territory focused on two-to-four-unit buildings to identify new energy-saving opportunities for retrofits and new construction.


This project was made up of two parts:

  • a market assessment of the two-to-four-unit building market sector in the ComEd service territory, including a review of best practices from other markets and an analysis of the northern building stock, and
  • a technical assessment of new energy-saving opportunities for deep energy retrofits and new construction markets.


  • There are about 455,000 homes located in two-to-four-unit buildings within the ComEd service territory. Approximately 70 percent of those buildings are occupied by renters and about 67 percent are in income eligible census tracts.
  • ComEd’s single-family and multi-family income eligible offerings served less than one percent of the two-to-four-unit building market in 2018, indicating a potential opportunity to close this gap through improvements to existing offerings or new, targeted energy efficiency offerings.


  • The project team recommended removing some of the eligibility requirements and barriers for customers in two-to-four-unit buildings participating in these offerings.
  • The project team found that ComEd and gas utilities could better leverage other aligned non-utility funds with other industries, such as those established with state and federal weatherization programs.

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