Fullerton, CA
A.J. Kirkwood & Associates is one of California’s premier electrical contracting firms, renowned for its technical mastery of large-scale commercial and industrial electrical systems. When a firm with such deep internal expertise in electrical infrastructure chooses a solar partner, they look for a contractor that shares their commitment to uncompromising engineering standards. In April 2023, A.J. Kirkwood selected Stellar Solar Commercial to design and install a 51.84kW (DC) rooftop photovoltaic system for their corporate headquarters in Fullerton, California.
Designing a solar solution for an electrical engineering headquarters requires a sophisticated approach to power quality and hardware synergy. Stellar Solar Commercial engineered a high-efficiency rooftop system that serves as both a primary power source and a testament to modern renewable energy integration.
The technical architecture of the A.J. Kirkwood installation features:
-108 Hanwha Duo XL-G10.d 480W Modules: These high-density, half-cut cell modules represent the elite tier of commercial solar hardware. Selected for their superior performance in high-temperature environments, these 108 panels ensure the headquarters captures maximum energy yield during the intense Fullerton summers.
-SolarEdge SE40KUS Optimized Inverter: To manage the 52kW power conversion with surgical precision, we utilized a state-of-the-art SolarEdge optimized inverter. This system, paired with panel-level power optimizers, ensures that every single module performs at its individual peak, providing the granular monitoring data that an engineering-focused firm like A.J. Kirkwood values.
-51.84kW (DC) Installed Capacity: Placed into service on April 24, 2023, this system was precisely engineered to neutralize the headquarters’ daily electrical load, transforming the building’s rooftop into a high-performance energy asset.
For an industry leader like A.J. Kirkwood, the transition to solar is a strategic business decision that reinforces its brand as a forward-thinking electrical innovator. By generating its own power on-site, the firm has effectively “locked in” its energy costs for the next two decades. In the 2026 energy landscape, where Southern California utility rates for commercial properties have reached historic highs, the foresight of this 2023 installation provides a powerful competitive advantage.
Every kilowatt-hour produced by the Hanwha Duo array is a kilowatt-hour the firm does not have to purchase from the utility at premium peak rates. This creates a permanent stream of capital savings that can be redirected toward:
-Technological Innovation: Investing in the latest BIM (Building Information Modeling) software and electrical diagnostic tools.
-Workforce Development: Enhancing the training and resources available to their field teams and apprentices.
-Operational Resilience: Protecting the firm’s bottom line against future utility inflation for the next twenty years.
Since 1998, Stellar Solar Commercial has been the preferred partner for California’s most technically demanding contractors, manufacturers, and engineers. We bring over 28 years of technical expertise to these high-stakes projects, navigating the unique structural and electrical requirements of commercial office buildings with a level of precision that meets the standards of even the most rigorous electrical contractors.
Our in-house team handles the entire lifecycle of the project—from initial structural roof analysis to navigating the complex utility interconnection and state-specific incentive programs for commercial entities. We specialize in “quiet-professional” construction, ensuring that the firm’s daily engineering and administrative operations remain undisturbed throughout the installation phase.
As we move through 2026, the strategy for premier professional and industrial suites has evolved to include Solar + Battery Storage. For organizations like A.J. Kirkwood, adding a battery system provides an essential layer of resilience, ensuring that critical data servers, security systems, and communication hubs remain fully operational even during regional power outages or grid instability.
Stellar Solar Commercial continues to lead this energy revolution, helping California’s business leaders build a resilient, low-cost energy future. We turn commercial rooftops into powerful tools for sustainability and financial success.
If your firm or professional office is ready to follow the lead of A.J. Kirkwood and reclaim control over your energy future, contact Stellar Solar Commercial today at 866.787.6527. We provide comprehensive, free site evaluations to help your business lead the way.