Paul has authored or co-authored more than 50 papers and articles related to energy efficiency and zero-energy commercial buildings. Among his many awards, Paul has received two ASHRAE Technology Awards for his energy-efficient buildings work and two Energy User News magazine's Efficient Building Awards. Paul was key in creating the performance based procurement process used to achieve zero energy building status for NREL's Research Support Facility and has been key in the development of the Advanced Energy Design Guide series from ASHRAE. Paul is a registered Professional Engineer holding a PhD from Purdue University.