Energy Sustainability

Project Info

  • Client National Institutes of Standards and Technology
  • Location Gaithersburg, MD

Campus Wide Solar Panels

As outlined in its 2009 Master Plan Update, the National Institute of Standards and Technology (NIST) committed to installing new photo-voltaic solar panels across the campus to supplement its existing 28 kW system.  Under an existing term contract, Global Engineering Solutions (GES) was tasked by NIST to provide comprehensive engineering services to develop options for expanding the existing system, or to develop an independent system that will produce 500-600 kW of new power.

As part of the design process, GES evaluated array configurations and orientations including multiple tilt and ground cover ratios utilizing the PVSYST photovoltaic design software and life cycle cost analysis computer modeling.  The life cycle cost analysis was done using the Building Life-Cycle Cost (BLCC) computer program developed by NIST economists for the Department of Energy.  The program conforms to requirements in the NECPA and subsequent energy conservation legislation as well as Executive Order 13423.

Administration Building 101 Roof Area: The project design included a ballasted roof mounted 336 module array configured to provide a system capacity 70.56 kWp with first year minimum energy output of 78.5 MWh, and first year yield of 1112 kWh/kWp.  This project represented the doubling of the existing roof mounted PV system.

Facility Services Building 301 Roof Area: The project design included a ballasted roof mounted 36 module array configured to provide a system capacity 7.56 kWp with first year minimum energy output of 8.3 MWh, and first year yield of 1098 kWh.  The auxiliary array was located at the services building immediately adjacent to the service fleet, and integrated on site vehicle charging station systems.

Rooftop Solar Panel Installation, Building 227:   The solar facilities included a PV array to be installed over an existing surface parking area in support of Laboratory Building 227.   The 1152 module shade canopy mounted array provides a system capacity of 70.56kWp with first year minimum energy output of 78.5 MWh, and a first year yield of 1112 kWH/kWP.

Ground Based Photovoltaic Solar Panel Installation, Building 216:  Design of a ground based PV array to be installed on an adjacent open site parcel in support of Laboratory Building 216.  The 1200 module array provides a system capacity of 252 kWp with first year minimum energy output of 327 MWh, and a first year yield of 1299 kWH/kWP.