City of Des Moines Ground Solar Array — Des Moines, Iowa

1 Source Solar partnered with the City of Des Moines to repurpose a retired landfill by installing a ground solar array in April 2024. The solar field is part of the city’s ongoing sustainability goals.

Our team assisted with a ballasted solar array designed to not disturb the landfill’s soil cap. The project received a 30% Federal Solar Direct Payment for non-taxable entities and may qualify for an additional 10% community bonus direct payment. In 2025, the project won a Best Development Award from 1000 Friends of Iowa.

In just over two years, the Harriett Street Solar Field created more than 1,800 MWh of electricity and avoided more than 1,500 tons of greenhouse gas emissions, according to the City of Des Moines.

• 99 solar panels
• System size: 38.6kW

• 30% federal solar direct pay for non-taxable entities