We are a full-service, turn-key EPC and solar installation company in Missouri and Illinois. We provide full solar services from design-to-build (engineering, procurement, construction, installation) for solar systems, battery storage, smart panels, and EV charging stations.
Since 2006, StraightUp Solar has installed more than 3,000 residential and commercial-scale solar projects in Illinois and Missouri.
We are a full-service, turn-key solar EPC and installation company. We provide full solar services from design-to-build (engineering, procurement, construction, installation) for solar systems, battery storage, smart panels, and EV charging stations. In addition, our service department has you covered for all solar operation and maintenance projects. Our straightforward project management approach is ready to see your project from initial concept to commissioning and operational support.
Nearly half of our employees are certified by the North American Board of Certified Energy Practitioners® (NABCEP).
Industry-leading ten-year workmanship and production warranties ensure your project will perform to your expectations.
We are local – under the same ownership in the same region for over a decade.
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StraightUp Solar first became Certified as a Benefit Corporation (B Corp) in 2015.
Certified B Corporations are unique in the business world, because they place people and planet above profit, and commit to high standards of social and environmental performance, transparency, and accountability.
Membership in Amicus Solar Cooperative makes us stronger. The Amicus Cooperative is a network of 80+ locally owned, quality-driven, and clean energy-committed solar installers across the nation sharing lessons learned, best practices, and cooperative buying power.
New “Big Beautiful Bill” changes the federal commercial solar tax credit. Find out how your MO or IL business can secure the credit before it’s gone!
In July 2025, the One Big Beautiful Bill (OBBB) accelerated the winddown of solar energy income tax credits (ITC). Discover how your business can safe harbor your solar project for maximum savings.
O’Fallon homeowner, Mark Sauer, went solar in 2023 with a 16.8 kW rooftop system. Since then, he has offset nearly all of his electricity use,
