What's Happening?
A 1,100-acre, 200-megawatt solar farm in northwestern New Mexico has demonstrated an unexpected coexistence with local pronghorn populations. Unlike a previous Wyoming solar farm that displaced pronghorn, this New Mexico facility, the San Juan Solar and
Storage Project, features nine individually fenced arrays with open passages between them. Researchers from Wildlands Network, supported by a $1.7 million Department of Energy grant, fitted 75 female pronghorn with GPS collars to monitor their movements. Since March 2024, over 1 million GPS locations and 5 million trail camera photos have shown that pronghorn are actively using these passages, navigating the industrial site like a maze. This behavior contrasts sharply with the Wyoming Sweetwater facility, where a single continuous fence led to pronghorn avoidance extending almost a mile beyond the fence line. The New Mexico passages were not designed for wildlife but resulted from property lines and drainage, inadvertently benefiting the animals.
Why It's Important?
This development is significant for the future of large-scale renewable energy projects, particularly in areas with sensitive wildlife. The findings suggest that thoughtful or even accidental design elements, such as segmented fencing with open corridors, can mitigate the negative impacts of infrastructure on wildlife movement. Pronghorn, known for their inability to jump fences, are particularly vulnerable to habitat fragmentation. The success of the San Juan Solar project in accommodating these animals offers a potential blueprint for sustainable energy development that minimizes ecological disruption. This could influence permitting processes and construction standards for solar farms in other states, especially in the American West where large tracts of land are often developed for renewable energy. The study highlights the importance of considering wildlife behavior and landscape features in project planning to achieve both energy goals and conservation objectives.
What's Next?
The Wildlands Network researchers are continuing to analyze the extensive data collected from the GPS collars and trail cameras. Their first paper, based on the initial year and a half of data, has been submitted for peer review to the journal Ecosphere. A second paper, specifically focusing on which passage sizes and shapes pronghorn utilize most effectively, is being drafted for submission later in 2026. These publications are expected to provide formal scientific validation of the observations and offer concrete recommendations for future solar farm designs. If the findings confirm the efficacy of these passages, it could lead to the adoption of similar segmented designs as a cost-effective wildlife mitigation strategy in solar development across pronghorn habitats. This could also influence policy and regulatory frameworks for renewable energy projects, potentially making wildlife-friendly design a standard requirement.
Beyond the Headlines
The San Juan Solar project's unexpected success in integrating with wildlife movement raises broader questions about adaptive management and the serendipitous outcomes that can arise from practical constraints. The passages, initially created due to property lines and drainage, demonstrate that solutions to environmental challenges can sometimes emerge from non-conservation-driven decisions. This case also underscores the ongoing tension between land use for energy production and wildlife conservation, particularly as renewable energy infrastructure expands. While the pronghorn are making do with less habitat, their ability to navigate the solar farm suggests a degree of adaptability in wildlife that can be leveraged through informed design. This study could encourage a more nuanced approach to environmental impact assessments, moving beyond simple avoidance to explore how infrastructure can be designed to allow for continued wildlife movement and habitat connectivity.
