Best solar companies California Occidental Power Solar & Cogen

Occidental Power Solar & Cogen Reviews

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

782verified installs in California utility records*
30recent installs, 2025-26 records*
2001first year in county records
7.0/10Solar.com Score · 39 reviews analyzed

Solar.com Installer Score for Occidental Power Solar & Cogen

One score, computed the same way for every installer. We read the full text of all 39 substantive published Occidental Power Solar & Cogen review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

7.0/10

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

Synthesized from 39 substantive customer review texts (42 published reviews collected).

Google 3.4★ · 5 reviewsYelp 4.2★ · 37 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.8.9

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.6.1

20 reviews speak to this · 14 praise · 6 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.5.4

11 reviews speak to this · 6 praise · 5 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.6.3

25 reviews speak to this · 18 praise · 7 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.6.8

18 reviews speak to this · 14 praise · 3 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.7.4

25 reviews speak to this · 22 praise · 3 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

23 reviews speak to this · 17 praise · 6 complaints

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

How does Occidental Power Solar & Cogen 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 Occidental Power Solar & Cogen 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 Francisco County6382220024.4 kW0.0%See county ranking →
San Mateo County84420025.1 kW0.0%below ranking floor (under 250 installs)
Alameda County33220045.3 kW0.0%below ranking floor (under 250 installs)
Marin County27220015.7 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.

Occidental Power Solar & Cogen 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 Integrity6.1/10

Reviewers most often describe the sales process as clear and helpful, with several praising the proposal stage and overall expectations management. Still, a smaller set reports contract misunderstandings, permit-cost surprises, and a few bait-and-switch style complaints, so the category reads as mixed rather than uniformly strong.Solar.com's composite of published customer feedback, not a customer quote

Clear proposals and helpful sales staff. Several reviewers describe a smooth path from the first proposal through the final inspection, and others say the team was professional and easy to work with during the sales stage. Representative review excerpt: "The entire process went very well from first proposal to final inspection and commissioning of the system."

Positive consultation experience. Reviewers also mention a friendly, informative initial walkthrough that helped move the project forward with confidence. Representative review excerpt: "What started as a small talk with a stranger on the sidewalk in San Francisco with a very positive and nice person, developed to a walkthrough the facility and full..."

Contract and expectation disputes. A smaller group reports problems with contract expectations and project promises, including complaints that details were not handled as expected at signing or afterward. Representative review excerpt: "I actually read the contract aloud with the client at the signing." Yes you did and you told us the permit would cost about $50 at that time on the..."

Price & financing transparency

Price Transparency5.4/10

Feedback on pricing and financing is mixed.Solar.com's composite of published customer feedback, not a customer quote

Pricing pricing and paperwork help. Reviewers describe a recurring pattern in this area. Representative review excerpt: "We interviewed 4 solar companies, chose Occidental based on their competitive price and our own gut instinct, and couldn't be happier!"

Incentive and refund timing went smoothly for some. A few reviewers describe the incentive or refund process as handled efficiently, which helped the final economics feel clearer. Representative review excerpt: "Then they processed all the paperwork so that I could get my refunds quickly."

Pricing and financing confusion. Other reviewers report surprise costs or unclear financing responses, including concerns about deposit timing, permit-cost assumptions, and changes that were not well explained in advance. Representative review excerpt: "In the end, they asked us for this payment and we asked about the financing -- the response is that they would have to pass the cost of carrying on..."

Communication & coordination

Communication6.3/10

Communication is generally described positively, especially when customers mention attentive follow-through, organized handoffs, and active support during difficult situations. The main complaint pattern is breakdowns in responsiveness, with some reviewers saying they had to chase updates or were not kept informed about changes.Solar.com's composite of published customer feedback, not a customer quote

Good handoffs and steady support. Reviewers praise the transition from sales to project management and say the company continued trying to support them when complications came up. Representative review excerpt: "I especially liked a proper hand off from my initial sales and architecture contacts to the project manager."

Responsive crew and office communication. Some customers say they were kept current on activities, timelines, and on-site coordination, which helped the project feel organized. Representative review excerpt: "I will start thanking from the top down; Greg (owner), Carmine (system designer) Keith (on site foreman) and the installation crew, always on time and they cleaned up very nicely."

Follow-up gaps and missed updates. Complaints center on delayed responses, missing information, and situations where customers say they had to repeatedly follow up to get answers or progress. Representative review excerpt: "I've called Occidental Power and have been assured that someone would help me but as stated above it's been there weeks of emails and promises to look into the issue..."

Timeline reliability

Timeline Reliability6.8/10

Most reviewers describe schedule handling as solid, with several noting timely crews, clear expected timelines, and successful progress through inspection and activation. The smaller complaint set points to permit or inspection confusion and a few issues with project timing details.Solar.com's composite of published customer feedback, not a customer quote

Timelines generally communicated well. Reviewers say they were kept current on expected timing, including when a short delay occurred, and appreciated knowing what to expect as the work moved ahead. Representative review excerpt: "I was kept current on all activities and expected timelines, even whey they changed due to a short delay on the panels."

On-time work and successful activation. Several comments describe crews arriving on time and the project reaching final inspection or utility activation without major delay. Representative review excerpt: "I will start thanking from the top down; Greg (owner), Carmine (system designer) Keith (on site foreman) and the installation crew, always on time and they cleaned up very nicely."

Permit and inspection confusion. A few reviewers report confusion around permit or inspection details, including disagreement over expected permit costs or lack of information before an inspection. Representative review excerpt: "In reality, the permit cost $111.25 and we have to wonder, how many of these have you done and you don't know what the cost of the permit is?"

Workmanship & site care

Workmanship7.4/10

Workmanship is one of the stronger parts of the review set. Reviewers frequently mention professional crews, clean job sites, and installations that were completed neatly, though a few complaints do describe leaks, equipment placement disputes, or post-installation concerns.Solar.com's composite of published customer feedback, not a customer quote

Professional installation teams. Many reviewers describe the crew as punctual, professional, and careful about cleaning up after the job. Representative review excerpt: "I will start thanking from the top down; Greg (owner), Carmine (system designer) Keith (on site foreman) and the installation crew, always on time and they cleaned up very nicely."

Solid install quality on rooftops and equipment. Customers also mention the installation itself as well executed, including the panels and support equipment on the roof. Representative review excerpt: "Occidental installed the solar panels on our roof and the support equipment."

A few workmanship concerns. The complaint pattern centers on leaks, plan changes, or concerns about how parts of the job were handled on-site before and after installation. Representative review excerpt: "Bait and switch, left us hanging with a leak for months, charged us for a visit even though after they disappeared for months and refused to provide the information that..."

Long-term support & performance

Long-Term Support5.0/10

Long-term support is the weakest category in the set. Some reviewers report that the system worked well after installation and that the company helped with fixes, but others say monitoring, repair estimates, and warranty follow-up became difficult once the system was turned on.Solar.com's composite of published customer feedback, not a customer quote

Systems reported to perform well. A number of reviewers say the system produced as expected after installation, which gave them confidence in the outcome. Representative review excerpt: "There is a saying in English that I love as follows: "The proof is in the pudding." Early this morning, our first electric bill arrived after the solar power system..."

Post-install help on some issues. Some customers describe the team returning to diagnose or fix problems after installation, which suggests at least some willingness to help after the job closed. Representative review excerpt: "(Racoons tumbling underneath the panels and getting ensnared by the cable the likely cause.) He fixed the problem, made sure other wires were tucked in properly, and rinsed the panels..."

Warranty and monitoring follow-through issues. Complaints focus on hard-to-reach support, repair estimates that did not match the reported issue, and concerns that help became limited after payment or turnover. Representative review excerpt: "As I recall, I have a multi-year warranty, but if the company won't call me back it's hard to implement."

Bottom line: Occidental Power’s reviews show a generally solid installation experience with stronger marks for workmanship and moderately positive feedback on timelines and communication. The main pressure points are pricing clarity, sales expectations, and especially long-term support after the system is operating.

How this is built: category scores and summaries weigh the company's full published rating record (5 Google reviews averaging 3.4 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 Occidental Power Solar & Cogen

Company background from published business information and licensing records.

Also files CPUC records as: Occidental Power.

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.
1
2001
10
'02
9
'03
25
'04
18
'05
27
'06
37
'07
40
'08
69
'09
41
'10
46
'11
31
'12
31
'13
31
'14
29
'15
46
'16
35
'17
29
'18
33
'19
29
'20
31
'21
36
'22
46
'23
43
'24
22
'25
12
'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 Occidental Power Solar & Cogen

What do customers say in Occidental Power Solar & Cogen reviews?

We analyzed 39 substantive published customer reviews of Occidental Power Solar & Cogen in full. The company's Solar.com Installer Score is 7.0/10, 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 Occidental Power Solar & Cogen installed?

Occidental Power Solar & Cogen appears as installer of record on 782+ 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 Occidental Power Solar & Cogen'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.