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The National Park Service sought FEMP technical assistance for guidance on how to modernize the off-grid solar PV system at the Natural Bridges National Monument in Utah.
The National Park Service’s Natural Bridges National Monument in Utah has operated as an off-grid system since the 1980s. This system, which includes solar photovoltaics (PV), battery storage, and diesel generators, serves as the sole source of electricity for the park’s operations. Over two decades ago, NREL researchers provided technical assistance for the development of a solar PV system within this off-grid setup. While still operable, certain components of that PV system are past their useful life, such as the PV modules exhibiting issues like delamination. The National Park Service sought FEMP technical assistance for guidance on how to modernize the system.
The technical assistance team conducted an on-site assessment of the system and made the following recommendations: 
Additionally, the team offered insights into the considerations for incorporating additional distributed energy assets should more electricity loads be added. These recommendations are currently being used to inform future project planning on updates needed for the PV system.
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