Research & Papers

Commercial Replacement and Attachment Window Solutions Market Characterization

February 17, 2026

This market characterization report is an output of the Phase II research for the Commercial Replacement and Attachment Window Solutions (CRAWS) Advancement Plan, finalized in September 2024. CRAWS in this report specifically refers to vacuum insulated glass (VIG) and commercial secondary windows (CSW).

The CRAWS market transformation initiative (MTI) offers a substantial opportunity to improve building envelope thermal performance; reduce heating, ventilation, and air conditioning (HVAC) loads; and enable downsizing of HVAC systems in need of replacement.

This report discusses the California market for CSW and VIG, highlighting key barriers, opportunities, and impacts by examining demand- and supply-side dynamics, awareness of secondary windows, and the regulatory framework.

Commercial

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The California Market Transformation Administrator (CalMTA) develops and manages market transformation initiatives in the state to reduce energy use and reduce greenhouse gas (GHG) emissions.

CalMTA seeks to help meet California’s energy efficiency and decarbonization goals by accelerating adoption of energy-efficient products and practices through market transformation. Market transformation is a proven strategic process of intervening in a market to create lasting change.
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CalMTA follows a rigorous process for reviewing, scoring, and then developing relevant, timely market transformation initiatives. The process supports market transformation initiative creation from concept to program development to market deployment, as well as the eventual exiting of the market.

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