An investment worth $30 million (£19.5m) will help make homes and buildings more energy efficient.
The loan comes from the US Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E).
The projects will focus on developing innovative materials to retrofit windows to explore the benefits of double insulated windows and reduce their heat loss by 50%.
Building heating accounted for 14% of the nation’s total energy consumption in 2013, stated ARPA-E.
Around a quarter of that energy is wasted by heat leaking through windows, it added.
It estimates retrofitting single-pane windows can reduce heat loss and save the amount of electricity needed to power 32 million houses per year.