From the New York Times article Made in the U.S.A.: Efficiency Materials by Kate Galbraith
While solar and wind manufacturers struggle to fend off Chinese competition, energy efficiency equipment seems to have no such problem.
According to a recent study commissioned by efficiency advocates, equipment like caulking and insulation — basic tools for retrofitting the country’s homes and businesses — is almost entirely made in the United States.
About 96 percent of caulking used domestically is made here, the study said, and various types of attic and wall insulation, as well as spray foam and duct sheet metal, are all over 90 percent American-manufactured. Even 96 percent of replacement windows for American buildings are made here.
The study was sponsored by the Home Performance Resource Center, a nonprofit linked to Efficiency First, an advocacy organization. A firm called Newport Partners conducted the analysis; it used government data to determine what share of each type of products was imported.
