Best solar companies California Cleantech Energy Solutions

Cleantech Energy Solutions Reviews

California installer. This profile is built from public installation records and published ratings, not paid placement.

143verified installs in California utility records*
10recent installs, 2025-26 records*
2003first year in county records
8.3/10Solar.com Score · 61 reviews analyzed

Solar.com Installer Score for Cleantech Energy Solutions

One score, computed the same way for every installer. We read the full text of all 61 substantive published Cleantech Energy Solutions review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

8.3/10

Blends the six category scores (70%) with the recency-weighted star record (30%).

Synthesized from 61 substantive customer review texts (71 published reviews collected).

Google 4.9★ · 51 reviewsYelp 4.9★ · 20 reviews

Updated September 28, 2026 · No installer can pay to change this score · How scores work →

Read what customers actually say ↓
Review star recordRecency-weighted star ratings across platforms, converted to a 0-10 signal before it is blended into the headline Solar.com Score.10.0

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.7.5

17 reviews speak to this · 17 praise · 0 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.6.8

9 reviews speak to this · 7 praise · 2 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.8.0

29 reviews speak to this · 29 praise · 0 complaints

Timeline ReliabilityHow well the company manages the path from contract through permits, installation, inspection, and turn-on — without the customer having to chase it.7.3

16 reviews speak to this · 16 praise · 0 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.8.2

33 reviews speak to this · 33 praise · 0 complaints

Long-Term SupportHow well the system performs after turn-on, how the company handles monitoring, warranty claims, and service calls — and its staying power to honor them.7.7

19 reviews speak to this · 18 praise · 1 complaints

#156 of 678 scored in California by Solar.com Installer Score

How does Cleantech Energy Solutions compare where you live? Rankings are local; an installer that leads one city can trail in the next. See how they rank in your city →

Why this differs from star ratings: most five-star reviews say “great company” and stop, and star averages reward that. These category scores only count reviews with concrete evidence, weighted by recency and the reviewer’s track record. A company can hold a strong star average while specific categories score lower; that gap is usually where the real story is. Categories with more complaints than praise are the questions worth asking any bidder, not necessarily dealbreakers.

Where Solar.com fits in

We score the installers. Then they compete for your roof.

Solar.com vets and scores every installer from public records and published reviews — then licensed installers bid on your actual roof. Real prices online, backed by the Best Price Guarantee. No sales calls, no pressure — you pick the winner.

See my price

Where Cleantech Energy Solutions builds

County-by-county activity from CPUC records through May 2026.

What this data covers: *Counts on this page, including the totals up top, come from investor-owned-utility interconnection records (SCE, SDG&E, PG&E). Work in municipal-utility territory, such as LADWP or city utilities, and outside California does not appear here, so this company's true totals are higher than shown. Unlike the county rankings, this profile also shows counties below the 250-install ranking floor.

CountyVerified installsRecent 2025-26Active sinceMedian system% leasedCounty rankingLink to the county ranking page. This company's rank on this page is its Solar.com Installer Score rank, shown above.
San Diego County1431020036.2 kW0.0%below ranking floor (under 250 installs)

% leased counts systems recorded as third party owned (lease or power purchase agreement); the remainder are customer owned. Median system size is the middle system this company installed in that county. Star ratings and review counts are from Google.

Cleantech Energy Solutions reviews: what customers say

An independent synthesis of published customer feedback across Google and Yelp, updated September 28, 2026. Green marks praise, amber mixed experiences, red complaints.

Sales & proposal integrity

Sales Integrity7.5/10

Reviewers describe the sales process as clear, knowledgeable, and straightforward, with proposals that set expectations well. Praise centers on honest explanations, fair estimates, and helpful guidance during the decision process, and the available evidence does not show a complaint pattern in this category.Solar.com's composite of published customer feedback, not a customer quote

Clear explanations. Reviewers say the team explained options in easy-to-understand language and shared information that helped customers evaluate their solar plans. Representative review excerpt: "Keith and Karin explained things in easy to understand language, they are extremely knowledgeable, very easy to work with, honest and upfront."

Fair estimates. Reviewers describe a recurring pattern in this area. Representative review excerpt: "Not only was CleanTech Energy Solutions fair with our estimate, but they provided excellent information to enhance our solar panels."

Helpful guidance. Some reviewers describe the sales process as especially useful when they needed extra context or support to move a project forward. Representative review excerpt: "After several proposals and a failed contract due to unprofessional, substandard work, Clean-Tech was my emergency, "save my solar project contract." This is not a roofing company who added solar..."

Price & financing transparency

Price Transparency6.8/10

Reviewers are mostly positive about pricing, with several noting fair charges or estimates that compared well against expectations. There are also a small number of complaints about billing or perceived overpricing, so this category reads as positive-to-mixed rather than uniformly strong.Solar.com's composite of published customer feedback, not a customer quote

Fair pricing reports. Several reviewers describe the pricing as fair and say they were comfortable with the cost they were quoted or charged. Representative review excerpt: "The price was fair, and I am pleased to be back in contact with them, but I am sure I won't have to see them for a long time!"

Pricing estimate. Some reviewers say the company’s estimate came in below another quote they received, which shaped their view of the overall value. Representative review excerpt: "Before replacing the whole system I received another quote from a trusted source and CleanTech had already beat that price by several hundreds of dollars."

Billing concerns. A small number of reviewers report dissatisfaction with charges or feeling that a service was overpriced, which is the main caution in this category.

Communication & coordination

Communication8.0/10

Reviewers consistently describe responsive communication, active coordination, and strong project ownership. Comments highlight quick replies, clear updates, and help managing utility-related steps or handoffs, with no material complaint pattern in the evidence set.Solar.com's composite of published customer feedback, not a customer quote

Fast responses. Reviewers say the team responded quickly to questions and often followed up within minutes or by the next day. Representative review excerpt: "They responded within minutes and scheduled an installation diagnostic appointment for the next day."

Strong project ownership. Customers describe the company as taking charge of coordination steps and keeping the project moving with steady communication. Representative review excerpt: "They took over my project with exceptional knowledge, experience, best practices, full communications, and with care every step of the way."

Utility coordination. Some reviewers note that the company handled coordination with the utility or other project parties, reducing the customer’s burden. Representative review excerpt: "CleanTech handled all the coordination with SDG&E to get our RMA reinstalled and our solar back up and running fast."

Timeline reliability

Timeline Reliability7.3/10

Reviewers generally say projects moved on schedule or were completed efficiently, including cases where the team worked within a short timeframe. The main constraint mentioned in the evidence is permitting or approval timing, which appears to have been driven by outside delays rather than by a broad pattern of missed commitments.Solar.com's composite of published customer feedback, not a customer quote

Quick scheduling. Reviewers describe some appointments and installations being arranged within days, with work starting promptly once the project was ready. Representative review excerpt: "Karin and Pablo fit me into their schedule literally within a couple of days and the installation went super smoothly."

Fast activation. Customers say the team helped get systems up and running quickly, including after complex coordination or repair situations. Representative review excerpt: "They are experts in their field and helped us get our solar system up and running on a very short timeframe."

Permit-related delay context. One reviewer notes that the overall timeline was prolonged by city permit approval, but still describes the process positively. Representative review excerpt: "I am extremely pleased with the whole process, prolonged as it was because of the slow approval of building permits by the city of San Diego, as well as the..."

Workmanship & site care

Workmanship8.2/10

Reviewers consistently praise the installation quality, professionalism, and cleanup. The evidence describes careful work on repairs and replacements, with customers highlighting smooth installs and solid on-site execution rather than recurring workmanship concerns.Solar.com's composite of published customer feedback, not a customer quote

Careful installation work. Reviewers say the crew handled roof and system work carefully and produced a clean, well-finished result. Representative review excerpt: "Karin was all over the situation and they removed the stuff from the roof and did a brilliant job replacing the framing and panels such that they fed right into..."

Professional repair results. Customers describe repair and replacement work as effective, including situations where older equipment or complex setups needed attention. Representative review excerpt: "The worn out system was removed and Clean Tech did a brilliant job installing new solar panels that worked flawlessly with all the old plumbing."

Reliable on-site execution. Some reviewers note that the team completed diagnostic or installation visits smoothly and professionally from the start. Representative review excerpt: "They responded within minutes and scheduled an installation diagnostic appointment for the next day."

Long-term support & performance

Long-Term Support7.7/10

Reviewers generally report solid follow-through after installation, including help with repairs, system restoration, and monitoring-related issues. A small amount of negative feedback appears in the evidence, so the category is positive overall but not without occasional service concerns.Solar.com's composite of published customer feedback, not a customer quote

Post-install help. Reviewers say the company helped restore systems after later electrical work or other disruptions, and got equipment back online quickly. Representative review excerpt: "After having our solar installed in 2020, we recently needed help after an electrical panel upgrade disconnected our system."

Repair and update support. Some customers describe the team as effective with older systems, monitoring-related issues, and component updates after the original install. Representative review excerpt: "Clean Tech also updated my solar hot water system replacing some failing components."

Service follow-up concern. One reviewer reports an unsatisfying service visit after requesting help for a panel issue, which is the main caution in this category. Representative review excerpt: "The owner climbed up his ladder, glanced at the panels, came down said "all good" then split."

Bottom line: Across 61 substantive reviews, CleanTech Energy Solutions is rated 8.3/10 overall, with especially strong marks for communication, workmanship, and sales clarity. Pricing transparency and long-term support are still mostly positive but show a few isolated complaints, while timeline reviews are generally favorable with some mention of permit-related delays.

How this is built: category scores and summaries weigh the company's full published rating record (51 Google reviews averaging 4.9 stars), the most recent and most relevant review texts, and recurring feedback themes verified acrossGoogle and Yelp. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.

About Cleantech Energy Solutions

Company background from published business information and licensing records.

Products

Solar

Service area

California. Note: the install counts on this page cover California investor-owned-utility records only.

Work for this company or see something out of date? Profiles can be claimed and corrected: contact partners@solar.com. Placement on solar.com is never for sale.

Recorded installs by year

Residential interconnections statewide in PG&E, SCE, and SDG&E records through May 2026.
2
2003
4
'04
1
'05
1
'06
1
'08
6
'09
6
'10
6
'11
7
'12
6
'13
3
'14
5
'15
6
'16
5
'17
5
'18
10
'19
8
'20
8
'21
14
'22
22
'23
10
'24
11
'25

Important context: this chart shows investor-owned-utility records only. Companies that shift work toward municipal-utility territory (LADWP and city power departments) or other states will show declining bars here even while building steadily elsewhere, and 2025-26 records also lag real installation dates. Treat this as a partial window, not the company's full trajectory.

FAQ about Cleantech Energy Solutions

What do customers say in Cleantech Energy Solutions reviews?

We analyzed 61 substantive published customer reviews of Cleantech Energy Solutions in full. The company's Solar.com Installer Score is 8.3/10, with category-level detail on this page covering sales integrity, price transparency, communication, timeline reliability, workmanship, and long-term support.

How many solar systems has Cleantech Energy Solutions installed?

Cleantech Energy Solutions appears as installer of record on 143+ residential systems in California investor-owned-utility interconnection records through May 2026. Work in municipal-utility territory or other states does not appear in those public records.

How can I compare Cleantech Energy Solutions' pricing?

Run your address through solar.com to see direct bids from vetted installers competing for your project, with pricing locked online. If you have a qualified quote from any installer, our Best Price Guarantee means we match better qualified prices.

Get bids from installers competing through solar.com.

Run your address and see direct pricing in about two minutes. No sales call required.

How we built this data

Methodology: Counts are residential PV interconnections in investor-owned-utility territory (PG&E, SCE, SDG&E) per CPUC Rule 21 public records through May 2026. Postal and name variants are merged. Municipal utility territory such as LADWP, Glendale, Pasadena, Burbank, Anaheim, and Riverside Public Utilities is not included in those CPUC counts. Counts show recorded installations, not quality ratings. Reported costs are self-reported on owned-system interconnections. No installer can pay for placement.

Who we are: Solar.com is a solar marketplace — we connect homeowners with installers and earn a fee when projects move forward. These rankings and scores are computed from public installation records and published customer reviews. No installer can pay for placement, and no installer — including those we work with — can pay to change a score.