National Cart, a warehouse and distribution facility in St. Charles, Missouri, partnered with Artisun Solar to install a rooftop solar system at the start of 2025. While the scale of the 3,648-panel system is significant, the project was defined by a tight 12-week timeline. To maximize year-end tax incentives, the entire array had to be fully operational by December 31st. Our team completed the design and installation nearly a month faster than the industry average, ensuring the system was energized without disrupting daily operations.
Read more about National Cart’s tight deadline in a case study here.
By hitting this deadline, National Cart successfully leveraged federal and state incentives like the Federal Solar Tax Credit and MACRS Bonus Depreciation. This strategic move reduced upfront costs and secured a 5.6-year payback period. The system is projected to save the company $130,128 annually, with total lifetime savings estimated at $5.8 million.
The energy savings allow National Cart to reinvest in their core business of designing custom material handling equipment for companies of all sizes. This project demonstrates how manufacturers can lower fixed operating costs while supporting sustainable operations for the long term.







