Best solar companies California Sullivan Solar Power

Sullivan Solar Power Reviews

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

8,618verified installs in California utility records*
0recent installs, 2025-26 records*
2005first year in county records
6.1/10Solar.com Score · 23 reviews analyzed

Solar.com Installer Score for Sullivan Solar Power

One score, computed the same way for every installer. We read the full text of all 23 substantive published Sullivan Solar Power review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

6.1/10

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

Synthesized from 23 substantive customer review texts (27 published reviews collected).

Google 3.9★ · 27 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.6.0

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.7.0

7 reviews speak to this · 7 praise · 0 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.5.8

5 reviews speak to this · 2 praise · 3 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.5.7

10 reviews speak to this · 6 praise · 4 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.6.3

5 reviews speak to this · 3 praise · 2 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.7.0

6 reviews speak to this · 6 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.5.0

6 reviews speak to this · 3 praise · 3 complaints

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

How does Sullivan Solar Power 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 Sullivan Solar Power 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 County6,727020055.9 kW0.9%See county ranking →
Orange County1,143020066.5 kW6.1%See county ranking →
Riverside County518020077.4 kW33.2%See county ranking →
Los Angeles County115020076.3 kW8.7%below ranking floor (under 250 installs)
San Bernardino County115020087.0 kW10.4%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.

Sullivan Solar Power reviews: what customers say

An independent synthesis of published customer feedback, updated September 23, 2026. Green marks praise, amber mixed experiences, red complaints.

Sales & proposal integrity

Sales Integrity7.0/10

Reviewers describe Sullivan Solar Power’s sales process as clear, professional, and thorough. The available feedback is entirely positive in this category, with reviewers often focusing on honest communication, careful needs analysis, and willingness to answer detailed questions.Solar.com's composite of published customer feedback, not a customer quote

Honest, informative sales conversations. Reviewers say the team was straightforward and professional during initial conversations and throughout the sales process. Representative review excerpt: "From my initial phone call to the post installation orientation , each member of their time was professional, honest, and willing to answer any question."

Thorough system analysis. Reviewers report that the company took time to analyze energy usage carefully and tailor the proposed system to household needs. Representative review excerpt: "They did the best analysis of our current energy usage and designed the system to exactly fit our needs."

Product knowledge and clarity. Reviewers say the company could explain product details clearly and answer specific technical questions. Representative review excerpt: "Finally a company that understands their product and can talk to you about any specific you ask or want to know more about."

Price & financing transparency

Price Transparency5.8/10

Feedback on pricing and financing is mixed to mildly negative. Some reviewers say financing, rebates, and project setup were easy to navigate, while others describe serious problems tied to deposits, refunds, vendor payment issues, and incentive timing.Solar.com's composite of published customer feedback, not a customer quote

Concerns around deposits and unresolved costs. Some reviewers report problems involving payments, vendor disputes, or projects that were not completed as expected. Representative review excerpt: "Left the country and didnt finish our solar project."

Financing and rebate setup felt easy. Reviewers describe a smooth experience getting financing in place and working through rebate timing as part of the project. Representative review excerpt: "Great experience, from the first meeting to getting financing in place, to rebates, to the install and monitoring, they made it all easy."

Value and pricing were well received by some. A few reviewers say the company offered good pricing and a solid overall value for the work delivered. Representative review excerpt: "Sullivan is a quality solar operator."

Communication & coordination

Communication5.7/10

Reviewers give the company credit for friendly, professional communication when projects are moving normally. At the same time, a notable share of reviews describe poor responsiveness, missed follow-up, or customers not getting updates when issues arose.Solar.com's composite of published customer feedback, not a customer quote

Helpful updates during the project. Reviewers say service staff kept them informed and were friendly during the work. Representative review excerpt: "All the service guys were friendly and kept me updated with their progress."

Professional and easy to work with. Some reviewers describe the team as knowledgeable, courteous, and willing to answer questions from start to finish. Representative review excerpt: "From my initial phone call to the post installation orientation , each member of their time was professional, honest, and willing to answer any question."

Responsiveness problems in later-stage cases. Other reviewers report difficulty getting replies by phone or web form and describe a breakdown in customer contact when they needed follow-up. Representative review excerpt: "They are actively tweeting that they're still in business - but have comments turned off and are not responding to calls or website form submissions."

Timeline reliability

Timeline Reliability6.3/10

Timeline feedback is somewhat mixed. Several reviewers say installation moved quickly and inspections were handled with oversight, but others describe unfinished work or delays that left them waiting for completion.Solar.com's composite of published customer feedback, not a customer quote

Faster-than-expected installation. Some reviewers report that installation finished sooner than they expected. Representative review excerpt: "Installation went faster than anticipated."

Inspection and handoff stayed on track. Reviewers say the team stayed involved through inspection and helped explain system operation after install. Representative review excerpt: "The Long Beach City inspection was conducted two days later with the full supervision of the Sullivan Solar team."

Incomplete or delayed projects. A few reviewers describe projects that were left unfinished or stalled before activation. Representative review excerpt: "Left the country and didnt finish our solar project."

Workmanship & site care

Workmanship7.0/10

Reviewers describe the installation crews as professional, efficient, and careful with the job site. Feedback in this category is entirely positive, with comments often centered on clean workmanship and a smooth installation experience.Solar.com's composite of published customer feedback, not a customer quote

Clean, professional installation. Reviewers say the installation was handled professionally and left the site clean. Representative review excerpt: "The installers were very professional and the installation was very clean."

Efficient crew performance. Some reviewers describe the crew as personable, efficient, and knowledgeable during the install. Representative review excerpt: "The installation crew under the direction of Eli was very personable, efficient and knowledgeable."

Clear post-install walkthrough. Reviewers report that the team explained system operation and monitoring clearly after the work was finished. Representative review excerpt: "After the installation the Sullivan team kept me informed with how the panels work and how to interpret the readings."

Long-term support & performance

Long-Term Support5.0/10

Long-term support and system performance draw mixed to negative feedback. Some reviewers report strong production and easy post-install experience, while others describe equipment failures or service issues after the system was already online.Solar.com's composite of published customer feedback, not a customer quote

Some customers saw strong savings. A few reviewers say their electric bills dropped substantially after the system was operating. Representative review excerpt: "We went from having a $300 during the summer to not more than $40."

Helpful monitoring and post-install setup. Some reviewers report that the team made monitoring and post-install setup easy to understand. Representative review excerpt: "Great experience, from the first meeting to getting financing in place, to rebates, to the install and monitoring, they made it all easy."

Equipment or service issues after install. Other reviewers describe inverter problems or difficulty getting support after the system had been installed. Representative review excerpt: "I had solar installed in 2020, and last month my inverter went out which caused my system to stop working."

Bottom line: Sullivan Solar Power’s reviews show a clear split: sales, workmanship, and some install-phase experiences are described positively, while pricing transparency, communication follow-through, timeline reliability, and especially long-term support receive more mixed feedback. The overall Solar.com installer score is 6.1/10 based on 23 substantive reviews, with the most consistent concerns centered on responsiveness and post-install service.

How this is built: category scores and summaries weigh the company's full published rating record (27 Google reviews averaging 3.9 stars), the most recent and most relevant review texts, and recurring feedback themes verified acrossGoogle. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.

About Sullivan Solar Power

Company background from published business information and licensing records.

Also files CPUC records as: Sullivan Solar Power of California.

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
2005
30
'06
39
'07
54
'08
111
'09
142
'10
154
'11
410
'12
625
'13
809
'14
1453
'15
1104
'16
846
'17
851
'18
1153
'19
492
'20
344
'21
2
'22
1
'24

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 Sullivan Solar Power

What do customers say in Sullivan Solar Power reviews?

We analyzed 23 substantive published customer reviews of Sullivan Solar Power in full. The company's Solar.com Installer Score is 6.1/10, 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 Sullivan Solar Power installed?

Sullivan Solar Power appears as installer of record on 8,618+ 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 Sullivan Solar Power's 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.