Martin Solar’s Award-Winning Storage Project Powers Residential Innovation in Waterloo, IL
In Southern Illinois, Martin Solar is setting a new standard for residential energy performance. Their dual-axis tracking and energy storage installation in Waterloo earned first place in the Storage category in the annual APsystems Project of the Year Awards.
Designed to minimize grid reliance while maximizing production, the 22kW-DC system features a 40-module dual-axis tracker paired with DS3 microinverters that follow the sun throughout the day. The installation is expected to generate approximately 41,000 kWh annually, delivering exceptional efficiency and long-term value for the homeowner.
Complementing the solar array is a powerful 120 kWh APstorage solution utilizing 12 batteries. With expanded backup capability and increased energy capture, the system provides greater resilience, independence, and control over household energy use.
“We go to great lengths to ensure top-notch installation quality and project performance for our customers,” said Preston Nelson of Martin Solar. “We have tested numerous PV inverter and ESS storage systems since our founding in 2021, and can confidently say that no other compares with either the immediate or long-term value and product offering by APsystems.”
Nelson emphasized that microinverter reliability and flexibility played a critical role in the project’s success.
“AP microinverters make most all of our projects successful, including this one,” he said. “AP micros are some of the only available at all common voltage and phase configurations, right out of the box, so we use them ubiquitously across our network. Their most efficient module-level production and real-time monitoring are invaluable for ongoing support and maintenance, and the standard 25-year warranty makes AP the best value inverter option for Martin Solar and its expanding customer base.”
The decision to deploy APsystems technology was driven by both technical performance and long-term bankability.
“As you are probably aware, we’ve become big fans of AP,” Nelson added. “The ease of setup, monitoring, and maintenance; the flexibility of design and configuration; the long-term reliability with warranty; and competitive pricing make AP the biggest bang for the buck. Where AP really goes above and beyond is in the support category, especially with storage support.”
Nelson also pointed to the accessibility and expertise of APsystems’ technical team as a differentiator.
“APsystems offers the quickest, most helpful U.S.-based tech support, and AP engineers are even accessible for questions,” he said. “As we’ve built this business, I’ve experienced numerous inverter hardware, software, and support companies, and can confidently say that none comes close.”
The homeowner response has reinforced the system’s success, with straightforward module-level monitoring and strong production helping the site exceed energy expectations. Visible from a nearby highway, the installation has already sparked curiosity from passersby interested in bringing similar capabilities to their own properties.
For Martin Solar, the Waterloo installation reflects a commitment to thoughtful engineering and customer-first solutions. By combining advanced tracking technology with robust storage, the project demonstrates how modern residential systems can deliver both exceptional performance and lasting peace of mind.
SEE OTHER WINNERS HERE






















