NREL Building

The SolarWall®
systems at the RSF is projected to deliver
over 238 MWh (856 GJ) of thermal energy each year. The
estimated reductions in GHG emissions is over 53 tones
of CO2 per year. The new NREL facility was also the winner
of a prestigious 2013 ASHRAE Technology Award for
its use of innovative technology.


The National Renewable Energy Laboratory (NREL) is the preeminent national laboratory of the U.S. Department of Energy. When their Office of Energy Efficiency and Renewable Energy was tasked with building their next sustainable green building, a new Research Support Facility (RSF), it was decided the 222,000 ft2 office building would be a showcase for energy efficiency and renewable energy technologies.NREL’s RSF is the largest Net Zero building in the US with 800+ staff and aiming for LEED® Platinum Plus rating from the USGBC. The RSF was designed to use 50% less energy than a standard office building, and incorporates a number of green innovations such as day lighting, natural ventilation, building integrated PV and a SolarWall® solar air heating system.


Incorporating the SolarWall® technology into the new building was a natural fit because NREL was involved with the development of the SolarWall® technology, and had officially referred to it as being “the most reliable, best performing, and lowest cost solar heating system for commercial and industrial buildings.” Two SolarWall® systems were incorporated into the south façade of the building. The charcoal colored solar collectors span over 8,640ft2 and pre-heat the fresh ventilation air using the sun, reducing heating costs and GHG emissions.