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Solar Installer GuildUnited States · independent

Technicians for Sustainability

Solar energy company · Tucson, AZ

What the listing shows you

4.9★

532 Google reviews

What it doesn’t

1%

rated 1–2★

typical in Tucson, 2%

Newest review held

Aug 2026

newest held review this month

Google's rating breakdown · all 534 reviews

Rated 1–2★
1%
typical in Tucson, 2%
Posted an update
—
we saw no owner post, which is not the same as none existing
Replies to reviewers
0%
of the 473 reviews we hold

Its one and two star share is 1 point below the typical installer in Tucson. Across Arizona, 163 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 473 review texts for this company, quoted below. Google publishes review ages rather than dates, so every date here is approximate.

On the Arizona ranking

No. 3 of the 103 rankable records in Arizona →

Ordered by the share of one and two star reviews, weighted by how many reviews stand behind it. It ranks review records, not workmanship.

Every company we hold in Tucson, on one axis

0% rated 1–2★15%

Each mark is one company we hold in Tucson whose Google breakdown has been read, placed by its share of one and two star reviews. Technicians for Sustainability is the red one. The amber line is the middle of that set, which includes suppliers and maintenance businesses as well as installers.

What reviewers said

  • 1★ · around August 2024

    When calling to make an appointment for an estimate, "Joe", didn't like that I thought his questions were irrelevant and told me to never call there again and hung up on me. Questions such as "how long have you lived in your house". If that's the way they make appointments, what's going to happen after installation? Don't do business here, plenty of other choices.

  • 2★ · around August 2024

    Its been 3 months since we asked for a quote - and nothing. The initial review was poorly structured - they never asked what our needs were and told us what our requirements were and that it would be 2-3 weeks to see a design. Here we are three months later with zippo. They keep telling us it will be 'shortly.' There are a million solar companies out there - all of whom make an effort to contact their customers. I would NOT recommend this company - mainly because they don't ask potential customers what their needs are, don't get back to you EVER and simply continually try to sell you on the en

  • 1★ · around August 2022

    Wasnt even worthy of getting an estimate.

  • 3★ · around August 2019

    service was completed on time. Had issues with communication and follow through with paperwork which almost delayed completion. But at the end TFS corrected all issues and pushed for on time completion. If they would have had better communication at the beginning I would have rated them higher. Install team was very professional and did an outstanding job.

  • 5★ · around August 2026

    We are very satisfied by the work done by TFS and our solar panel system. They really kept our best interest in mind when it came to remaining eligible for certain tax incentives. The administrative team is very communicative and let us know of changes or issues well ahead of time so that we could plan. They are also very responsive to any questions we had. Their installers did a great job, too.

  • 5★ · around August 2026

    TFS provides the premier solar equipment with the best installation and customer service. We are very satisfied!

  • 5★ · around August 2026

    TFS was professional, reliable, honest, as well as enthusiastic about installing rooftop solar. I procrastinated on getting a solar/storage system because I was discouraged by consistent reporting on the messiness of the solar market. Gathering estimates confirmed that there is some messiness out there, but it also highlighted the contrast demonstrated by TFS. I think mission-driven and employee-owned make a difference. Highly recommend.

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

  • solar installation 154
  • courteous staff 36
  • professional technicians 16
  • sustainability 13
  • installation team 13
  • battery storage 13
  • friendly employees 7
  • no pressure sales 7
  • low electric bills 6
  • rooftop solar installation 5

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

    “Ready to Go Solar? Call today for a free consultation or solar home evaluation 520-740-0736…”

  • 24/7 availability

    “emergency, we recommend contacting a 24/7 electrical contractor. Additional…”

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

Elsewhere

  • It is also reviewed on 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 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 4 PM
Tuesday
8 AM to 4 PM
Wednesday
8 AM to 4 PM
Thursday
8 AM to 4 PM
Friday
8 AM to 4 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.

Other installers around Tucson

1–2★3★4★5★gauge 0–20%typical here, 2%

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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