Researchers at Troy, NY-based Rensselaer Polytechnic Institute (RPI) received a $1.5 million 3-year grant from the US Department of Energy to develop a hemp-based low-cost insulation panel that can cut heating and cooling costs in home retrofits.

If hemp building products can shave off just a sliver of the annual $2.7 trillion U.S. building industry revenue, the industry can be brought to profitability and prices can lower to match those of conventional construction materials, advocates believe.