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Solar Installer GuildUnited States · independent

Cortese Energy

Solar energy company · Melrose Park, IL

What the listing shows you

4.8★

36 Google reviews

What it doesn’t

6%

rated 1–2★

typical in Illinois, 2%

Newest review held

Aug 2026

newest held review this month

Google's rating breakdown · all 36 reviews

Rated 1–2★
6%
typical in Illinois, 2%
Posted an update
2 months ago
the company posting to its own Google profile
Replies to reviewers
28%
of the 36 reviews we hold

Its one and two star share is 4 points above the typical installer in Illinois. Across Illinois, 69 of the 183 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 Illinois, on one axis

none

1–5%

6–10%

11–20%

over 20%

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

What reviewers said

  • 1★ · around March 2026 · the company replied

    Worst Solar Company, Vincent or Vinny came to my house and give us nothing but false promises made us get a loan for solar and my solar not working and I’m paying for the solar loan and my electricity, a lot of workers have come to my house and haven’t fix the issue now Vincent won’t answer my calls or messages. At this point I’m taking down this solar. This is ridiculous, never go to this solar company everything has been a nightmare.

  • 5★ · around August 2026

    Eric and his crew were great! I wasn’t able to be there so he worked with my 80 year old dad to help solve some issues and they were able to call me at work and send pics along the way. Very professional and respectful! They also left a very clean job site and took off their shoes. Extremely friendly! Appreciated Eric’s patience while he walked two non-techie people through the setup. Thank you to Eric and his crew. We appreciate your hard work.

  • 5★ · around July 2026

    When I first started looking into solar, I had multiple companies come out over the years, and every one of them eventually decided my project wasn’t feasible. By the time I met Eric, I had pretty low expectations. Eric was different from day one. We started this project back in November, and what should have taken a few months turned into a much longer journey because of circumstances completely outside of either of our control. Throughout all of it, Eric never disappeared. He kept me informed, answered my endless questions, and remained patient even when I was asking for updates or second-gu

  • 5★ · around July 2026

    Eric was a very polite and personable! Also quite informative. Not pushy at all, white makes it easier to trust him.

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

  • communication 6
  • solar panels 5
  • solar energy 3
  • costs 2
  • roof 2
  • simple process 2
  • job quality 2
  • expert advice 2
  • respectful staff 2
  • quick 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.

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

    Elsewhere

    • It is also reviewed on Yelp and the Better Business Bureau. 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 X and Instagram. A page that stopped posting years ago tells you something a listing will not.

    When they say they are open

    Sunday
    9 AM to 5 PM
    Monday
    9 AM to 5 PM
    Tuesday
    9 AM to 5 PM
    Wednesday
    9 AM to 5 PM
    Thursday
    9 AM to 5 PM
    Friday
    9 AM to 5 PM
    Saturday
    9 AM to 5 PM

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

    Other installers in Illinois

    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.
    • Google publishes no street address for this company, so we cannot say which town it is based in. Melrose Park is the area its listing was returned for, not an address we hold.
    • 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.

    Do you run Cortese Energy?

    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.

    Claim this listing