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Solar Installer GuildUnited States · independent

Solar Installation Group, Inc.

Solar energy company · Oakdale, CA

What the listing shows you

4.8★

291 Google reviews

What it doesn’t

5%

rated 1–2★

typical in the Modesto area, 2%

Newest review held

Aug 2026

newest held review this month

Google's rating breakdown · all 291 reviews

Rated 1–2★
5%
typical in the Modesto area, 2%
Posted an update
—
we saw no owner post, which is not the same as none existing
Replies to reviewers
72%
of the 32 reviews we hold

Its one and two star share is 3 points above the typical installer in the Modesto area. Across California, 578 of the 1,529 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 32 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 the Modesto area, on one axis

0% rated 1–2★15%

Each mark is one company we hold in the Modesto area whose Google breakdown has been read, placed by its share of one and two star reviews. Solar Installation Group, Inc. 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 2026 · the company replied

    I had previously left a good review for Rylan Kerr. I have deleted it. I would give zero stars if i could. I dealt with Rylan Kerr i was first tol my installation would happen rather quickly. this was in August. it did not get installed until January. Prior to installation I was worried we were not doing enough. Sunrun had given me an estimate and recommended the same amount of panels except they fell we needed a battery and expansion. Or two batteries. Rylan came and said we did not need two batteries. When I was concerned he under did our solar. He assured me not to worry because we could al

  • 1★ · around February 2026

    Our experience with SIG has been unacceptable. After installation and payment, SIG solar became largely unreachable. We have …

  • 1★ · around January 2026

    Thought that going with a “Local” solar company would be good as they said they were family oriented. The Kerr brothers were, of course, very nice salespeople. There are a few good points to highlight in the installation, professionalism of the techs etc. BUT- promises made to have the system up and running by the end of year (more than 4 months time) and they said they would be ready. When FINALLY SIG got around to putting in the permits we still had to wait WEEKS because now they had to wait for the materials. The same stuff that they promised they had ‘in stock’ and ‘ready to install’ as so

  • 5★ · around August 2026 · the company replied

    SIG Solar installed systems on two houses that we own in Copperopolis and we were and continue to be pleased with the results. Deanna Greener handled both projects and did an outstanding job for us. One of the installations required sizing of the system for both typical home use plus forecasting a future pool system that was getting built in parallel with the solar. Deanna nailed the system sizing perfectly and we typically don't pay a PG&E bill and if we do it's usually very small. We recently saw Deanna at a SIG booth in Oakdale and she asked how our systems were doing. I realized that I had

  • 5★ · around July 2026 · the company replied

    My experience was great from beginning to end. Everyone from sales to field crews where super friendly. The install looks great all of the electrical piping was hidden in the attic rather than running pipes all over your roof! The work was done in one day!

  • 5★ · around July 2026 · the company replied

    I had a great experience working with deanna from start to finish. She is knowledgeable, professional, and took the time to explain every step of the process without any pressure. She answered all of my questions honestly, helped me find …

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 68
  • installation crew 28
  • easy process 27
  • quick installation 21
  • courteous staff 19
  • knowledgeable sales rep 15
  • new roof 12
  • no pressure sales 5
  • battery storage 4
  • generator installation 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.

  • Financing

    “save! That is why we offer multiple financing options for all of our clients so that…”

  • Warranty

    “consider to be an optimal amount. Warranty Information We stand behind the…”

  • Years in business

    “license which has been active for over 40 years. After seeing what was lacking on the…”

  • Bonded

    “may have! Is SIG Solar a licensed and bonded contractor? Yes, SIG Solar is a fully…”

Its website also mentions free estimate, family owned, licensed and licence number, 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 LinkedIn, 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 4:30 PM
Tuesday
8 AM to 4:30 PM
Wednesday
8 AM to 4:30 PM
Thursday
8 AM to 4:30 PM
Friday
8 AM to 4:30 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 Modesto

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.

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