Special Notice: Due to technology issues, SMUD is temporarily unable to accept payments at any of the remote pay stations such as grocery or Wal-Mart stores. In-person payments can be made only at the SMUD Customer Service Center located at 6301 S Street, Sacramento.

If you made a payment at a remote pay station between Saturday, April 22 and Thursday, April 27 there may be a delay in the payment being credited to your SMUD account. Affected customers will not be assessed late penalties and no accounts will be disconnected as a result of the issue. Payments through the mail, our website or by calling SMUD are not affected. Please accept our apologies as we work around the clock to correct the issue.

Red tile roof

Cool Roofs

Cool roofs reflect solar energy (reflectance) and discharge stored heat (emissivity). Compared to standard roof surfaces, cool roofs stay 50 degrees to 60 degrees cooler on hot summer days. And that keeps cooling costs down.

Watch a short video to learn more

Cool roof rebates
Homeowners can earn rebates for installing cool roof materials that meet initial standards of solar reflectance and thermal emissivity.

SMUD cool roof rebates are based on federal ENERGY STAR® standards, not California Title 24.
See a list of cool roof products.
Residential Roof Type Solar Reflectivity / Thermal Emissivity SMUD Cool Roof Rebate
Pitched 25% or higher reflectivity (Energy Star)
75% or higher emissivity
$0.10/sq. ft. of the air-conditioned area under the roof
Pitched 40% or higher reflectivity
75% or higher emissivity
$0.20/sq. ft. of the air-conditioned area under the roof
Flat 75% or higher reflectivity
75% or higher emissivity
$0.30/sq. ft. of the air-conditioned area under the roof

With cool roofs you'll enjoy:

  • Lower cooling costs
  • Reduced A/C equipment wear
  • Greater comfort


Cool roof types

For flat roofs (3 main roofing types):

  • Coatings
    For existing roofs in good condition. Applied by spraying or rolling. Most common is the elastomeric type.
  • Single-ply membranes
    For roofs in need of an overhaul. These are pre-fabricated sheets applied in a single layer and heat-sealed for a continuous bond. More expensive than coatings, but much better quality and overall performance.
  • Sprayed polyurethane foam (SPF)
    Lightweight, easy to apply, providing good insulation and waterproofing. Note: SPF requires a cool roof coating to be applied over it in order to protect the foam against degradation.

For pitched roofs (multiple types):

  • For pitched roofs, most qualifying materials (40 percent reflectance or higher) consist of light colored tiles, coated metals (bare metals do not qualify), cedar shakes and a limited number of asphalt shingle products. Ask your roofing specialist for details.

Search a list of Cool Roof products


To apply for a rebate, complete and submit the following 3 documents:

  1. Cool Roof rebate form.
  2. Copy of the product invoice (if product was self-installed) or a copy of the contract with the roofing contractor.
  3. Copy of the building permit for this roofing retrofit project.

Mail all three documents to:
Sacramento Municipal Utility District
Residential Cool Roof Program, MS A203
P.O. Box 15830
Sacramento, CA. 95852-0830

Or email all three documents to: James.Mills@smud.org.

IMPORTANT: Your contractor's invoice and rebate application must specify the product installed (manufacturer's name and product brand). In addition, installations must have been made on a home (single family or mobile home) having an electrical central air conditioning (AC) system. Wall AC units are not eligible for rebates. New construction homes are also not eligible.

Questions? Call (916) 732-6798 or e-mail us.