Percentage of energy-efficiency remodeling products that are manufactured in the U.S.

Home Performance Resource Center

1.6 million

Workers in 16,500 factories who were certified through U.S. Training Within Industry programs, 1940-1945


$200 billion

Americans’ annual energy costs

Energy Information Administration

$50.2 billion

Projected size of energy-efficient home improvement market by 2014 ($38.3 billion in 2009)

$23.4 billion

Projected size of home energy auditing business by 2014 ($8.1 billion in 2009)

Pike Research