Today's Law As Amended

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AB-660 Building energy efficiency standards: solar reflectance of roofs.(2019-2020)

 The Legislature finds and declares all of the following:
(a) A key objective in the Clean Energy and Pollution Reduction Act of 2015, enacted pursuant to Senate Bill 350 (Chapter 547 of the Statutes of 2015) is to “double the energy efficiency savings in electricity and natural gas final end uses of retail customers through energy efficiency and conservation.”
(b) There is an opportunity to improve the efficiency of existing residential buildings, particularly older ones, by ensuring that roofs are replaced using, when appropriate, cooler materials to save energy.
(c) According to peer-reviewed research conducted by Lawrence Berkeley National Laboratory and its review of housing data from the United States Census Bureau and the Department of Finance:
(1) About 90 percent of residential roof surfacing materials sold each year in California are installed on existing residential buildings.
(2) The benefit of a cool-roof product, which is determined by annual cooling savings minus increase in annual heating costs, on an existing home is about two to four times the benefit of the same product installed on a new residential building.
(3) In addition, the benefit of a higher-performance residential cool-roof product is about three times the benefit of a lower-performance residential cool roof product.
(d) A 2016 California Statewide Utility Codes and Standards Program study found higher-performance and lower-performance residential cool-roof products are comparable in price. The study also reported many cobenefits to cool roofs, including urban heat island mitigation, global cooling, better air quality, and improved human health and comfort.
(e) As noted in a 2013 report by the Governor’s Climate Action Team, “[t]he most cost effective way to mitigate the urban heat island [effect] is to accelerate the adoption of reflective roofs.”

SEC. 2.

 Section 25402.14 is added to the Public Resources Code, to read:

 (a) During one or more of the next four triennial code adoption cycles after January 1, 2020, the commission shall consider amendments to the roof replacement building standards for alterations to existing low-rise, steep-sloped roof residential buildings, to be included in Part 6 (commencing with Section 100) of Title 24 of the California Code of Regulations, with the goal of increasing the value of minimum aged solar reflectance up to 0.40 in the 2031 standard and the goal of expanding the range of climate zones in which minimum aged solar reflectance values are prescribed for those alterations.
(b) Prior to considering amendments to roof replacement building standards pursuant to subdivision (a), the commission shall assess whether there is an adequate supply of labor resources and available compliant products in the climate zones for which the commission may consider these amendments.
(c) Any requirement prescribed pursuant to subdivision (a) shall be cost-effective, as determined pursuant to Section 25402, and shall not be imposed on existing low-rise, steep-sloped roof residential buildings where the cost of compliance would exceed the actual energy cost savings achieved through compliance.