PHOTO: Institute for Sustainable Infrastructure

The Institute for Sustainable Infrastructure awarded Alliant Energy’s Dubuque Solar Project with an Envision Platinum rating. The solar project is the first of its kind to receive Envision recognition and the second in Iowa to receive a Platinum rating.

Constructed on two sites near the Port of Dubuque and the West Dubuque industrial park, it’s the largest solar garden in Iowa. The project supports Alliant’s transition to a cleaner-energy future. Additionally, it will help the City of Dubuque achieve its goals to reduce greenhouse gas emissions by 50 percent from 2003 levels by 2030.

Each year, the garden’s output is equal to the annual usage of about 850 average Iowa homes. Electricity generated from the project will be consumed entirely locally within the Dubuque community to reduce electrical demand on the grid.

PHOTO: Alliant Energy Corp.

The Dubuque Solar Project delivers multiple benefits to the community. Connected to the city’s existing trail system is a walk-and-bike path that extends around the Port of Dubuque site. To give the public an unobstructed view of the solar panels, the project team put an innovative Energy Lab into operation. This addition gives the community an opportunity to learn more about solar energy.

The ISI Envision rating system measures sustainable infrastructure projects in five categories: quality of life, leadership, natural world, resource allocation, and climate and risk. Learn more about Envision and ISI at

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