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Solar Installer GuildUnited States · independent

Prometheus Solar

Solar energy system service · Flagstaff, AZ

What the listing shows you

4.8★

36 Google reviews

What it doesn’t

3%

rated 1–2★

typical in Arizona, 5%

Newest review held

Jul 2026

newest held review this month

Google's rating breakdown · all 36 reviews

Rated 1–2★
3%
typical in Arizona, 5%
Posted an update
—
we saw no owner post, which is not the same as none existing
Replies to reviewers
42%
of the 36 reviews we hold

Its one and two star share is 2 points below the typical installer in Arizona. Across Arizona, 152 of the 269 installers whose breakdown Google has published carry a higher share than this one.

The percentages are Google’s own arithmetic over every review it holds, not a sample we assembled. Separately we hold 36 review texts for this company, quoted below. Google publishes review ages rather than dates, so every date here is approximate.

Every company we hold in Arizona, on one axis

none

1–5%

6–10%

11–20%

over 20%

Every company we hold in Arizona whose Google breakdown has been read, grouped by their share of one and two star reviews. Prometheus Solar is in the highlighted group.

What reviewers said

  • 1★ · around August 2022 · the company replied

    I called and spoke with Kelly at least six times, asking for help. She said they were busy and couldn’t send a tech out to assess my onsite needs until the following month. She said she’d reach out to me. I never heard back. I called again, same story, same result - nobody called and I wasn’t helped. A friend had told me to call Prometheus and ask for Kelly. So, I gave them the benefit of the doubt. I called again, Kelly answered and apologized for dropping the ball (her words). With a promise to reach out to me once a tech was free, I was sure she’d call. Wrong again! I finally went to Northe

  • 3★ · around August 2020 · the company replied

    Super nice people. But forgetful of materials needed to do the job. Communication wasn’t good either. I consistently had to call to find out what was going on, if they were done with the work when they left the property. I had to call multiple times to try to get answers from them

  • 5★ · around July 2026

    Since Ryan left, service has been poor. System malfunctioned and have been calling for service for 2 weeks with no luck. Can't get a response if when to fix. Still waiting. Even though it was slow getting a response, they came through. Jose and Perry made it happen, fixed the problem and the service call was excellent. The issue was they are a very busy company. But in the end, we were taken care of. :)

  • 5★ · around October 2025

    If you need work on your solar panels on your roof ask for Luis Orona, he did a great job inspecting my panels and made sure everything was secure! Thanks for helping me after hours Luis, I’ll be back next season where we could look at upgrading. I appreciate your attention to details, and helping me out!

  • 5★ · around August 2025

    José and his team are doing awesome professional work AND provide a great customer experience! Thank you! Joe with GlobeLife

Reviewer names are not published here. Negative reviews are shown first because they are the ones a listing hides, not because they are more representative.

What reviewers keep mentioning

  • customer education 3
  • season 2
  • batteries 2
  • responsiveness 2
  • attention to detail 2
  • courteous staff 2
  • helpful salesman 2
  • solar panel work 2

Topics Google derives from the review text, with how often each appears. A frequent topic is not a good one: “price” turns up in praise and in complaints alike.

What the company says about itself

Taken from its own website. We have not checked any of it, and a sentence on a website is not evidence.

  • Free estimate

    “state. If you’re ready for your free quote or you just want to chat about your…”

Its website also mentions established, but not in a sentence we can quote cleanly.

Elsewhere

  • It is also reviewed on the Better Business Bureau and Yelp. Worth reading before you sign anything: those are a different crowd, and the complaints that reach the Better Business Bureau rarely reach Google.
  • It posts on YouTube, Instagram and Facebook. A page that stopped posting years ago tells you something a listing will not.

When they say they are open

Sunday
Closed
Monday
8 AM to 5 PM
Tuesday
8 AM to 5 PM
Wednesday
8 AM to 5 PM
Thursday
8 AM to 5 PM
Friday
8 AM to 12 PM
Saturday
Closed

As Google published them when we last read the listing, not a live check. Ring before you drive anywhere.

Who Google shows alongside them

Google’s own “people also viewed” set, in Google’s order. It is Google’s comparison, not ours.

The ones without a link have no page here, either because Google does not categorise them as solar businesses or because we could not match the name to a listing with confidence.

Other installers around Flagstaff

1–2★3★4★5★gauge 0–20%typical here, 5%

Ordered by how much we can tell you about each, which is not an order of quality. We do not know which of these is better and would not say if we did.

What we don't know

  • The date above is the newest review we hold, which is not necessarily the newest that exists — we hold a large share of Google's reviews, not all of them.
  • We do not verify licences, insurance or bonding. Nothing here has been checked against a state licensing board.
  • We cannot tell you what an installation costs, and we hold nothing about the equipment they fit.

Something wrong here? Tell us and a person will read it.

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Claim this listing to become its verified contact: correct your own phone number, hours and description, and hear first if anything here changes. Free, reviewed by a person — and it changes nothing about the numbers.

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