Skip to content

TVA Solar Panel Field

This 40-acre solar array is a partnership between Ameresco and the City of Alton, Illinois to develop a 5 megawatt AC (MWAC)/7 megawatt DC (MWDC) solar array. The solar installation will be developed on a local closed municipal landfill site in the city.

UES provided geotechnical exploration services consisting of site reconnaissance, drilling six borings, laboratory testing, engineering analyses, and preparation of summary report. The project includes the installation of solar panels in a vacant field in East Alton, Illinois. The panels were mounted at-grade on concrete pedestals, which were oversized for uplift and overturning. Recommendations for design and construction of the proposed solar panel foundations were also provided.


Ameresco, Inc.


East Alton, Illinois


Materials Testing

Geotechnical Engineering

Field & Code Compliance