Saving Arizona Time, Money and Hassle with Quality Commercial Solar Solutions and Dependable Service, Since 1999.
Delivering high-performance solar installations and electrical for quality-minded EPCs and commercial clients.
At Watt Masters, we specialize in delivering top-tier commercial solar installations across Arizona. With nearly three decades of experience, our focus is on providing quality, dependable, and max-ROI solar solutions that meet the unique needs of commercial and industrial enterprises.
Everything we do is driven by purpose: to empower your business with reliable, high-performance solar systems that slash operating costs, strengthen energy resilience, and give you a powerfully competitive edge and long-term ROI.
We thrive in complexity, whether as your turnkey solar provider or behind the scenes as a trusted subcontractor. In every role, our commitment is the same — professionalism, precision workmanship, and rock-solid dependability.
We don’t chase quick-turn residential installs. Our specialty is in commercial solar, and our reputation is built on executing large-scale projects and long-term EPC partnerships with excellence.
Years of Service
Solar Panels Installed
Projects Completed
5★ Reviews
(A 1928 newspaper article promoting home electricity by highlighting its safety and convenience, contrastring old oil lamps with electric lighting, and reinforcing the benefits. We (Gustav Bühler) played a key role in bringing these first electrical systems into homes.)
Watt Masters isn’t just a company, it’s a legacy. Rooted in generations of electrical expertise, our journey began in Germany in the early 1900s, laying the foundation for our unwavering commitment to quality workmanship, exceptional customer experiences, and a deep passion for empowering businesses with sustainable, cost-effective energy solutions.
Launching in Arizona in 1999, we are grateful to be one of the first solar providers. We’ve wired and installed thousands of solar panels over the years and have learned a lot. We understand the unique demands of commercial projects, and our experience working with industry leaders like Empire Power Systems has further honed our ability to deliver exceptional results, earning us recognition as a leader in commercial solar installation in Arizona.
At Watt Masters, we’re not just installing solar, we’re investing in the success of Arizona’s local economy. Our dedication to reliability, efficiency, and customer satisfaction sets us apart, making us the trusted choice for commercial solar projects.
We don’t outsource or hire day laborers — we’re a 100% in-house team of seasoned professionals with deep expertise in commercial solar and advanced electrical systems.
Fully licensed, safety-trained, and equipped with the right tools for the job, we deliver precision installations that meet the highest industry standards. We don’t cut corners, subcontract to the lowest bidder, or leave quality to chance — we build it right the first time, every time.
Tom has demonstrated his skill in numerous applications and developed the trust of myself and our entire organization.
I have been working with Tom Buehler for the past thirteen years. They have completed several commercial projects for our business. It is rare to find such a professional company that offers outstanding customer service along with quality workmanship.
Please consider this an enthusiastic recommendation for Watt Masters, who's worked with me on solar installations since 1998, from 5 kW to 2.4 mW (24 panels to 8,000). Empire has awarded $3m+ and we plan to maintain this successful relationship for years to come.
Regarding the very functional 62.5 KwH covered parking solar system for our congregation. The entire process was handled professionally. Most importantly, any issues that arose were continually addressed and resolved. Job site was neat and tidy. Staff polite and helpful.
At Watt Masters, quality isn’t just a goal—it’s our legacy.
As a third-generation electrician, this trade runs deep in my blood. My grandfather first began wiring homes in Germany back in the early 1900s. My father, Rolf Buehler, carried that tradition to New York in the 1950s, starting his own electrical business with the same integrity and pride he was raised with. From a young age, I was on job sites with him, learning the ropes, and more importantly, learning the value of doing the job right.
That foundation shaped everything. I’ve been working in the electrical field since I was ten years old, and today, I bring over 45 years of personal experience to every project we take on—residential, commercial, and large-scale solar.
After moving to Arizona in the late 1980s, I gained experience with some of the Valley’s largest electrical contractors before starting Watt Masters in 1999. That same year, we completed our very first solar project for the East Mesa Library. We were hooked—and decided to make solar a core part of our work.
Since then, we’ve installed solar across Arizona on everything from churches and schools to remote off-grid locations and multimillion-watt commercial rooftops. In fact, we were the lead installer on Arizona’s largest rooftop solar project at the time—long before many solar companies in business today even existed.
We don’t just install panels—we wire them right. That’s because we’re not just a solar company. We’re licensed, bonded, and insured electricians specializing in low, medium, and high voltage systems. Our in-house team handles everything from conduit runs to panel tie-ins with precision and care. No day labor. No outsourcing. Just skilled professionals who take pride in their work.
Watt Masters has been trusted by some of Arizona’s most well-known companies, including Empire Caterpillar, to handle complex, high-performance solar installations. And we’ve earned that trust the same way we’ve built everything else: through honesty, craftsmanship, and rock-solid work ethic.
We don’t believe in shortcuts. If something needs to be redone to make it right, we do it—no questions asked. Our team is built of people who take pride in their craft and wouldn’t sleep well knowing a job was left half-done. That’s just who we are.
Whether you’re considering solar for your business, church, or industrial facility, I’m here to answer any questions you have—no pressure, no gimmicks. Just straightforward guidance from someone who’s been doing this work the right way for decades.

Thanks for taking the time to get to know us. We’d be honored to earn your trust and show you what quality solar really looks like.
All my best,
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Tom Buehler – President, Watt Masters