Washington, D.C. · 2024
U.S. Department of Energy Headquarters
A 223.44 kW ballasted-plus-anchored PV array on the DOE headquarters in Washington, D.C., built on FastRack 510-6dg to withstand high winds and temperature extremes while showcasing the agency's clean energy leadership.
System size
223.44 kW-DC
Completed
2024
- Location
- Washington, D.C.
- Modules
- 456 × Silfab SIL-HN 490W
- Mounting system
- FastRack 510-6dg at 5° tilt
- Mount type
- Rooftop
- Structural method
- Ballasted + anchored (76,077 lb system weight)
Why this project worked
- First-of-its-kind rooftop array on the DOE's own headquarters
- 456 Silfab 490W modules engineered for D.C.'s variable climate
- One-piece FastRack 510-6dg made from BASF Ultramid for high-wind stability
- Sourced and manufactured entirely in the U.S.A.
Overview
The U.S. Department of Energy is at the forefront of advancing clean energy solutions across the country. As part of an ongoing commitment to sustainability, the DOE commissioned a photovoltaic installation on the rooftop of its Washington, D.C. headquarters using Sollega's FastRack 510-6dg racking system. The project reflects the agency's leadership in environmental responsibility and its dedication to renewable energy at the federal level.
The site presented unique challenges. Washington D.C.'s variable climate brings high winds and significant temperature fluctuations throughout the year, and the DOE required a racking solution that was durable enough to keep 456 solar modules secure and operational under extreme weather. Sollega was entrusted to help engineer a PV system that could meet those stringent performance demands.
Sollega's FastRack 510-6dg was selected for its one-piece design, manufactured from durable, non-corrosive BASF Ultramid nylon. The racking's resilience combined with a fast ship-stage-install workflow made it the ideal choice for securing the modules onto the DOE facility with minimal rooftop disruption.
The installation is a landmark achievement in the nation's clean energy movement. It underscores the DOE's leadership in advancing renewable energy and highlights the value of collaboration between government entities and private-sector partners in accelerating solar adoption on federal infrastructure.
The FR510-6dg is manufactured 100% in the U.S.A., with raw materials from Texas, injection molding in Los Angeles, and fasteners from Ohio. It is recyclable at the end of its useful life.
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