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Watt Masters is listed on Top Solar Services as a solar contractor serving Phoenix, Arizona. The 45 verified reviews on this page reflects real client experiences. Use the information on this page — the verified review count, sub-ratings on quality, schedule, cost, and willingness-to-refer, the company's services and pricing snapshot, and the contact details — alongside your own due diligence on licensing and insurance before requesting a quote.
Solar contractors in this category should carry a current state contractor license, $1M+ general liability and workers' compensation insurance, and verified reviews from recent projects in your area.
In Arizona, solar contractors are typically licensed at the state level for electrical or general construction work, and the most-cited credentials homeowners check on this page are NABCEP certification, manufacturer training (Tesla, Enphase, SolarEdge), and verified workers' compensation coverage. Confirm Watt Masters's state contractor license number with your Arizona licensing board, verify any NABCEP credentials at nabcep.org, and request proof of general liability and workers' compensation insurance certificates that name your project address before signing a contract. For larger projects, ask for two or three references from recently completed installs of similar size and call them about quality, schedule, and warranty service experience.
Typical project timeline. Most residential installs run 8–14 weeks end to end: about a week for the site survey and design, 2–6 weeks waiting on permits from the local Authority Having Jurisdiction, one to three days of physical installation, then 2–5 weeks for inspection and utility permission to operate. The panels go up fast; the paperwork is what sets the schedule. Ask Watt Masters for the specific permitting turnaround in Phoenix, because local inspection backlogs are the single most common source of schedule slippage and vary widely between neighboring jurisdictions.
What the quote process looks like. A serious solar installation quote is delivered in writing after a site assessment — not as a verbal number on a first phone call. Expect a written proposal with an itemized bill of materials (panel and inverter make and model), a production estimate modeled in PVWatts, Aurora, or Helioscope showing shading and tilt assumptions, the full price before and after any incentives, and financing terms disclosed separately from the equipment price. Get at least three comparable written proposals so you are comparing equipment and scope rather than sales pressure, and be wary of any bid that expires within 24 hours or requires more than 10% down before work begins.
Credentials to confirm. Before signing, verify the state contractor license number with the Arizona licensing board, confirm any NABCEP certification directly at nabcep.org, and request certificates of general liability and workers' compensation insurance that name your project address. A contractor who hesitates to produce these documents has told you what you need to know.
How warranty service works. Three separate warranties apply: the panel manufacturer's product and performance warranty (typically 25 years), the inverter warranty (10–25 years depending on platform), and the contractor's own workmanship warranty covering labor and roof penetrations. Only the last one depends on Watt Masters remaining in business, which is why a company's track record in Phoenix matters as much as the warranty length on paper. Confirm in writing who to call for a service claim, what the response window is, and whether the workmanship warranty transfers if you sell the home.
Electricity rates and payback. Residential customers in Arizona pay roughly 14–17¢ per kWh, and that avoided-cost figure — not any incentive — is what actually drives solar payback. The higher your current bill and the longer you plan to stay in the home, the stronger the case. Installed residential pricing in Arizona generally runs $2.40–$2.90 per watt before incentives, with smaller systems landing at the upper end because fixed permitting and mobilization costs spread across fewer watts.
Net metering and utility policy. Arizona operates under an export-rate credit set annually by the Corporation Commission rather than full net metering, locked for 10 years at interconnection. This is the detail most homeowners overlook and the one that changes twenty-year savings the most, so ask Watt Masters to model your system under the tariff you will actually be placed on rather than a generic assumption.
Incentives available in 2026. The federal Section 25D residential tax credit expired on December 31, 2025, so homeowners buying a system outright no longer claim the 30% credit. Section 48E remains available for business-owned and third-party-owned systems, which is why lease and power-purchase-agreement offers have become more competitive in Arizona than they were a year ago. At the state and utility level, Arizona homeowners can look to a 25% state tax credit capped at $1,000, plus sales- and property-tax exemptions. Confirm current program status before signing — incentive budgets are capped and windows close without much notice.
Why this is a workable solar market. Between 14–17¢ retail electricity, established installer competition around Phoenix, and the policy structure above, Arizona supports well-designed residential solar — provided the system is sized to your actual usage rather than oversized to inflate a commission.
Clients consistently praise Watt Masters for professional service, transparent communication, and quality workmanship. Reviewers frequently highlight the company's ability to deliver projects on schedule and within budget.
This summary is based on verified Top Solar Services reviews.
Tom Buehler, owner of Watt Masters came quickly, diagnosed the problem with our solar system, and procured the correct replacement part. Hector and Jimmy installed the new inverter, and our system was back online in no time.
We chose Watt Masters because of their years of experience in the solar industry and because they are electricians. They will be there when we need them. Trustworthy and quality workmanship.
Watt masters sent electrician Bill and his assistant Brandon to add electrical to the living room and master bedroom ceilings. Then to put in ceiling fans. It was a big job. The placement was well calculated and eye pleasing. The price was right. Two days scheduled, but completed in one. Wow.
I'm a General Contractor an have used Watt Masters on new residential construction of luxury homes, high end remodels, as well as on Commercial Tenant Improvement work. Tom Buehler and each and every one of his employees are excellent to work with. They are all very knowledgeable and very pleasant to work with. My customers love interacting with them as well. Overall a very pleasant experience when you deal with Watt Masters. They have also installed several complete solar systems for me!
This company does a great job from the time they quote until they complete the job. Tom and his guys take care to make sure that every detail is complete. I was very impressed at how accurately they laid out my new can lights. Everything is equally spaced and the lights are perfectly inline with one another. They also did a great job installing new vent fans in the bathrooms. I didn’t have to do any drywall repair which was nice. Tom also installed solar on my house and also upgraded my service. The process for the solar was painless as he took care of everything. I will continue to use Watt Masters in the future and recommend them to anyone.
Working with Tom and his team was as easy as it gets. They were professional, courteous, and timely. The value was amazing and today I am enjoying my solar savings and that makes me smile even more. I highly recommend Watt Masters for your next project