Residential Energy Efficiency Rebates
Residential Energy Efficiency Rebates
The City of Naperville Electric Utility is offering rebates for homeowners who install energy-efficient attic insulation and replace single-pane windows.
- To qualify for the rebate, applicants must be residential Naperville Electric Utility customers who own or rent their residence.
- Improvements must be purchased and installed after Jan. 1, 2021.
- The rebates are limited to 50% of the project, including material and installation, with a $3,000 maximum rebate for each energy-efficient improvement.
- Customers could qualify for a maximum rebate of $6,000, if they installed both attic insulation and energy-efficient windows.
- Rebates will end when all funding is allocated.
- Applicants must provide a copy of their current utility bill showing they are a contributor to the Renewable Energy Program at the $5-per-month level or above. Renewable Energy Program contributions are the source of funding for these rebates. For more information and to sign up for the program, visit www.naperville.il.us/renewable.
Attic Insulation
For attic insulation, the final level of insulation (preexisting and new) must have a minimum R-Value of R49. A final depth of at least 15” is generally sufficient to reach the required R49 value.
Here are some tips for applying for the rebate.
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Attic Insulation R-value of Materials and Depths: $1 per square foot/$3,000 maximum rebate |
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Material |
R-value per inch |
R-value at 15” |
|
Fiberglass (batt) |
3.1-3.4 |
46.5-51.0 |
|
Fiberglass (blown) |
2.2-4.3 |
33.0-64.5 |
|
Mineral Wool (batt) |
3.1-3.4 |
46.5-51.0 |
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Mineral Wool (blown) |
3.1-4.0 |
46.5-60.0 |
|
Cellulose (blown) |
3.2-3.7 |
48.0-55.5 |
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For attic insulation, the final level of insulation (preexisting and new) must have a minimum R-Value of R49. |
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Window Replacement
Windows must have a U-factor of 0.30 or lower.
- The grant amount is $300 per window, with a $3,000 maximum award.
- The window must separate a heated space from an unheated space and must replace a single-pane window with a double- or triple-pane window.
According to the Department of Energy, heat gain and heat loss through windows are responsible for 25% to 30% of residential heating and cooling energy use. For windows, the rate of heat loss is indicated in terms of the U-factor. The lower the U-factor, the greater a window’s resistance to heat flow and the better its insulating value.
Here are some tips for applying for the window replacement rebate.
For more information, please contact Dian Klupshas at klupshasd@naperville.il.us or (630) 420-6181.