Best solar companies California Paragonsun

Paragonsun Reviews

Based in Irvine, CA. This profile is built from public installation records and published ratings, not paid placement.

182verified installs in California utility records*
21recent installs, 2025-26 records*
2017first year in county records
8.6/10Solar.com Score · 129 reviews analyzed

Solar.com Installer Score for Paragonsun

One score, computed the same way for every installer. We read the full text of all 129 substantive published Paragonsun review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

8.6/10

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

Synthesized from 129 substantive customer review texts (130 published reviews collected).

Google 4.8★ · 52 reviewsYelp 4.9★ · 78 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.7.6

38 reviews speak to this · 36 praise · 2 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.6.9

19 reviews speak to this · 15 praise · 4 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.8.6

98 reviews speak to this · 98 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.8.1

57 reviews speak to this · 55 praise · 0 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.8.5

70 reviews speak to this · 70 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.8.2

62 reviews speak to this · 59 praise · 3 complaints

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

How does Paragonsun 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.

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Where Paragonsun 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.
Orange County781820177.8 kW0.0%below ranking floor (under 250 installs)
Riverside County46120176.1 kW0.0%below ranking floor (under 250 installs)
Los Angeles County33120178.4 kW0.0%below ranking floor (under 250 installs)
San Bernardino County25120177.1 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.

Paragonsun 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 Integrity7.6/10

Reviewers most often describe the sales experience as straightforward, thorough, and low-pressure. A small number of complaints appear in the evidence set, but the overall pattern is that proposals and expectations were presented clearly and customers felt informed during the process.Solar.com's composite of published customer feedback, not a customer quote

Clear, low-pressure sales approach. Reviewers repeatedly say the sales process was thorough and straightforward, with questions answered and no strong pushy behavior reported in the positive feedback. Representative review excerpt: "The industry is filled with shady sales people trying to make a quick buck on homeowners, but Cory was thorough and straightforward throughout the process."

Detailed proposal support. Customers also describe help with paperwork, utility approvals, and implementation details as part of a well-managed proposal experience. Representative review excerpt: "All paperwork is filled out and submitted to the electric company for approvals, and, when necessary, communication and scheduling of roofers like we needed for system 2 (see positive review..."

No hidden-cost confidence. Some reviewers say the initial quote was higher than expected, but they did not report hidden fees or surprise add-ons and felt comfortable with the scope presented. Representative review excerpt: "The initial quote seemed higher than the others, but there were no hidden fees or additional costs, and I was confident they could fix the issue."

Price & financing transparency

Price Transparency6.9/10

Reviews lean positive on cost explanation and transparency, with several customers saying the company walked them through pricing in detail. At the same time, this is one of the more mixed categories, with some complaints about financing, deposits, refunds, or incentive timing in the evidence base.Solar.com's composite of published customer feedback, not a customer quote

Cost walkthroughs are appreciated. Reviewers say the team took time to explain cost components and make the financial side easier to understand. Representative review excerpt: "What impressed us most was the depth with which they delved into the cost analysis, not merely presenting figures but walking us through each element, thereby demystifying the financial landscape..."

No surprise charges in some reviews. Some customers report that even when the starting quote felt high, they did not encounter hidden fees or extra costs later on. Representative review excerpt: "The initial quote seemed higher than the others, but there were no hidden fees or additional costs, and I was confident they could fix the issue."

Watch-outs around pricing timing. The category includes a modest set of complaints, so buyers should pay close attention to financing terms, deposit expectations, refunds, and any incentive timing discussed during the sale. Representative review excerpt: "to San Diego), Paragon was the most professional and informed when it came to detecting possible reasons for a panel not working and why my battery would have a "false..."

Communication & coordination

Communication8.6/10

This is the strongest area in the review corpus. Reviewers consistently describe fast replies, proactive updates, and organized coordination across permits, scheduling, and follow-up, with no complaints in the evidence set.Solar.com's composite of published customer feedback, not a customer quote

Fast and responsive communication. Customers frequently say questions were answered quickly and the team stayed available throughout the project. Representative review excerpt: "They even scheduled a follow up call a week after our appointment to confirm that everything was working perfectly."

Strong ownership of the project. Reviewers describe the company as handling unusual issues, utility-related complications, and next steps without leaving customers to manage the process themselves. Representative review excerpt: "Did a fantastic job handling the swap of my Enphase Gen3 battery system for a Gen4, including managing completely off the script anomalies that the utility invented for my case."

Proactive follow-up. Some reviewers note follow-up calls and check-ins after appointments, which they viewed as helpful and reassuring. Representative review excerpt: "They even scheduled a follow up call a week after our appointment to confirm that everything was working perfectly."

Timeline reliability

Timeline Reliability8.1/10

Reviewers generally report that projects moved along reliably through permitting, inspection, and activation. A couple of reviews mention delays from external factors such as weather or regulatory changes, but they also say the company kept them updated during the delay.Solar.com's composite of published customer feedback, not a customer quote

Projects often finish on schedule. Some reviewers say the full process ran quickly, including one report of permitting through full production in about 60 days. Representative review excerpt: "From permitting through final inspection to full production, the entire project wrapped up in just 60 days from when we booked — that kind of timeline is remarkable in this..."

Good handling of the permit path. Customers describe help with permit steps, paperwork, and utility coordination as part of a dependable timeline process. Representative review excerpt: "I ended up connecting with Cori from ParagonSun and she guided me through the permit process with the city and how to get my solar plans updated so I could..."

A few timeline delays were communicated. The small mixed set notes that some installs took longer than planned because of rain or new regulations, but reviewers said they were kept informed along the way. Representative review excerpt: "The install ended up taking more time than initially planned due to rain and new regulations, but Victor and Cori kept me updated every step of the way and I..."

Workmanship & site care

Workmanship8.5/10

Reviewers overwhelmingly praise the installation crew for professionalism, punctuality, and quality of work. The evidence set does not surface a complaint pattern here, and customers often mention careful handling of the site and confident execution.Solar.com's composite of published customer feedback, not a customer quote

Professional installation crews. Customers repeatedly describe installers as professional, reliable, and easy to work with during the on-site phase. Representative review excerpt: "Based on my experience, I find ParagonSun reliable, very professional, and refreshingly trustworthy, and I would recommend them to anyone who needs quality solar service and professional workmanship."

On-time, quality workmanship. Reviewers mention crews showing up on time and doing a great job, which reflects well on installation execution. Representative review excerpt: "William showed up on time and did a great job."

Comfort with complex installs. Some reviews point to larger or multi-part systems and still describe the work as handled competently and professionally. Representative review excerpt: "2022 Addition to System 1 - 1 battery installed March 2023 System 2 - 16 solar panels, 3 batteries, installed May 2024 Total of 47 panels and 7 batteries, 1..."

Long-term support & performance

Long-Term Support8.2/10

Post-install support and system performance are mostly described positively, especially around troubleshooting, monitoring, and help with existing equipment. There are a few complaints in this category, so the overall picture is strong but not perfect for long-term service and warranty support.Solar.com's composite of published customer feedback, not a customer quote

Helpful troubleshooting after turn-on. Reviewers say the team was knowledgeable in diagnosing panel and battery issues and in helping customers understand what was happening after activation. Representative review excerpt: "to San Diego), Paragon was the most professional and informed when it came to detecting possible reasons for a panel not working and why my battery would have a "false..."

Support for ongoing system needs. Customers also describe help with battery installations, equipment updates, and broader post-install service needs. Representative review excerpt: "We reached to Paragon Sun in summer 2024 to replace some of our existing solar equipment and to install a battery system."

Some warranty concerns appear in the set. A small number of reviews raise warranty-related concerns, so long-term support is generally positive but has a few watch-outs in the evidence base. Representative review excerpt: "The company we hired to install solar went bankrupt, leaving all of us high and dry without the warranty they promised."

Bottom line: PARAGONSUN’s review profile is strongest in communication, workmanship, and post-install support, with reviewers consistently describing responsive coordination and solid on-site execution. Sales transparency also scores well, while pricing and financing are the most mixed area and include a few complaints about cost-related expectations and timing. Overall, the available reviews point to a generally positive customer experience with a small number of recurring watch-outs rather than broad complaint patterns.

How this is built: category scores and summaries weigh the company's full published rating record (54 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 Paragonsun

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.
34
2017
32
'18
18
'19
11
'20
9
'21
24
'22
31
'23
8
'24
12
'25
9
'26

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 Paragonsun

What do customers say in Paragonsun reviews?

We analyzed 129 substantive published customer reviews of Paragonsun in full. The company's Solar.com Installer Score is 8.6/10, 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 Paragonsun installed?

Paragonsun appears as installer of record on 182+ 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 Paragonsun's pricing?

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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.