Paul Torcellini is a Principal Engineer with the National Renewable Energy Laboratory (NREL). He has just completed an assignment at the U.S. Department of Energy in Washington, D.C., working in the Building Technology Office. Prior to this assignment, he was the Group Manager for Commercial Buildings Research at NREL.

Torcellini was part of the owner team that procured NREL's 360,000-square-foot net-zero office building in Golden, Colo.  This project is changing the commercial office building landscape by using 50 percent less energy than if it were built to current commercial code, while being built at a competitive cost for new construction. This project was honored by ASHRAE earlier this year with a first-place 2013 ASHRAE Technology Award. 

Torcellini is a recognized expert in methods and technologies to achieve substantial whole building energy savings in both new construction and major renovations. He has been at NREL for nearly 20 years; is a registered Professional Engineer and holds a PhD from Purdue University.