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Storm Window and Insulating Panel Campaign

The Storm Window and Insulating Panel (SWIP) Campaign is a collaborative initiative sponsored by the U.S. Department of Energy (DOE) and managed by Pacific Northwest National Laboratory (PNNL) to accelerate the adoption of modern, high-performance storm windows and insulating window panels (sometimes called window inserts or secondary glazing) as well as other energy efficient window attachments—delivering energy savings and comfort in residential and commercial buildings at a fraction of the cost of full window replacement. The SWIP Campaign serves as a national platform and one-stop-shop for sharing information and recognizing successes of key stakeholders, including utilities, energy efficiency programs, weatherization organizations, home performance contractors, and others.

Why Storm Windows?

More than half of U.S. homes have inefficient windows (e.g., single-pane or double-pane clear glass), but full window replacement can be impractical or cost-prohibitive. Modern storm window attachments provide an effective alternative at one third of the cost. Some benefits include:

  • 12–33% heating and cooling energy savings year-round1
  • 10–30% reduction in home air leakage2
  • Easy and permanent installation
  • Increased comfort
  • Reduced outdoor noise
  • Operable and fixed models
  • Great for historic homes

Goals of the SWIP Campaign

  • Increase awareness, visibility, and build the body of knowledge  
  • Help launch and promote new utility and energy efficiency programs  
  • Establish a national platform for sharing information and best practices
  • Provide technical assistance and key resources  
  • Provide support to increase adoption in weatherization programs  
  • Recognize organizations that demonstrate success in adopting or promoting secondary glazing technologies 

How Do I Get Involved in the SWIP Campaign?

To get involved in the SWIP Campaign, you can join as a campaign partner or contact the SWIP Campaign team.


  1. Katherine A. Cort, "Low-e Storm Windows: Market Assessment and Pathways to Market Transformation", August 2013,
  2. Thomas D. Culp, Sarah H. Widder, and Katherine A. Cort, "Thermal and Optical Properties of Low-e Storm Windows and Panels," 2015,

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