Best solar companies California Cinnamon Energy Systems

Cinnamon Energy Systems Reviews

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

1,732verified installs in California utility records*
442recent installs, 2025-26 records*
2013first year in county records
8.7/10Solar.com Score · 205 reviews analyzed

Solar.com Installer Score for Cinnamon Energy Systems

One score, computed the same way for every installer. We read the full text of all 205 substantive published Cinnamon Energy Systems review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

8.7/10

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

Synthesized from 205 substantive customer review texts (209 published reviews collected).

Google 4.8★ · 110 reviewsYelp 4.7★ · 99 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.9.9

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.8.0

78 reviews speak to this · 74 praise · 4 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.7.0

27 reviews speak to this · 22 praise · 5 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.8.4

147 reviews speak to this · 136 praise · 11 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.8.2

98 reviews speak to this · 91 praise · 7 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.8.8

128 reviews speak to this · 124 praise · 4 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.8.7

94 reviews speak to this · 85 praise · 9 complaints

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

How does Cinnamon Energy Systems 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 Cinnamon Energy Systems 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.
Santa Clara County1,45636620137.3 kW0.3%See county ranking →
San Mateo County2055320177.0 kW0.5%below ranking floor (under 250 installs)
Santa Cruz County381020218.2 kW0.0%below ranking floor (under 250 installs)
Alameda County331320197.2 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.

Cinnamon Energy Systems reviews: what customers say

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

Sales & proposal integrity

Sales Integrity8.0/10

Reviewers most often describe the sales process as clear, knowledgeable, and grounded in technical detail. A small number of complaints suggest occasional disconnects between what was represented and what customers later experienced.Solar.com's composite of published customer feedback, not a customer quote

Clear system guidance. Many reviewers say the team explained system options and design needs in a straightforward way, helping them understand equipment choices and project scope. Representative review excerpt: "From the start, Andrew Smith was able to talk me through the system I would need and was able to present the system in an extremely clear manner."

Technical confidence. Customers frequently praise the company for technical expertise and for making complex solar decisions feel manageable during the proposal stage. Representative review excerpt: "If you want a solar contractor with deep technical expertise, unmatched integrity, and true dedication to customer satisfaction, I highly recommend Cinnamon Energy Systems."

Occasional expectation gap. A few reviewers report that sales representations did not fully match later installation realities, especially around roof type or project fit. Representative review excerpt: "My one reservation is that their sales person explicitly represented that Cinnamon was experienced with installing panels on a metal roof before and would have no issues doing it here."

Price & financing transparency

Price Transparency7.0/10

Most reviewers who mention pricing describe the quotes and overall value positively, including battery-backed packages and reasonable estimates. The complaint pattern centers on a handful of experiences involving backup-related issues, order confusion, or dissatisfaction with how costs and expectations played out after signing.Solar.com's composite of published customer feedback, not a customer quote

Reasonable quote discussions. Several reviewers say they received pricing information that felt clear and fair, with quotes that matched the needs discussed for their homes or properties. Representative review excerpt: "Cinnamon came out and listened to what I needed and gave me a quote, which I found very reasonable, including a battery backup."

Helpful product-value explanation. Customers also report that staff took time to explain equipment options and help them understand the value of different system configurations. Representative review excerpt: "Jessica is an amazing subject matter expert in the solar industry and really helped us understand what was needed at our residence and commercial properties to reduce our carbon footprint..."

Post-sale cost concerns. A smaller set of reviewers describe frustration tied to backup equipment, monitoring, or order handling after the project was underway. Representative review excerpt: "New company came out, confirmed that we needed a new inverter but when they tried to order it they were denied because Cinnamon Energy "

Communication & coordination

Communication8.4/10

Communication is one of the company’s stronger themes, with many reviewers describing frequent updates, helpful follow-through, and organized handoffs across the project. Complaints are less common but include slow callbacks, voicemail-only contact, and a few reports of projects stalling or seeming overlooked.Solar.com's composite of published customer feedback, not a customer quote

Responsive project follow-up. Reviewers often describe timely email responses and helpful follow-up from project staff, which made coordination feel smoother. Representative review excerpt: "Marcus was also very patient, professional, and his follow up and response to emails was timely and always helpful."

Clear multi-step coordination. Many customers say they received steady updates from multiple team members and appreciated transparent communication from start through post-installation. Representative review excerpt: "We especially appreciated the transparent communication throughout the project and the post-installation follow-up to ensure everything was running smoothly."

Slow or missed callbacks. A few reviewers report difficulty reaching the company by phone or feeling like their project needed extra prompting to keep moving. Representative review excerpt: "At 4 months, I followed up and as best I could tell, my project had just been forgotten and made me wonder if I would have ever been contacted if..."

Timeline reliability

Timeline Reliability8.2/10

Most reviewers describe the company as organized around permits, inspections, and utility coordination, with several saying the process was handled smoothly. Still, a noticeable minority mention scheduling delays, permit complications, or slower-than-expected responses when issues came up.Solar.com's composite of published customer feedback, not a customer quote

Smooth process management. Many reviewers say the team walked them through permitting and final inspection in a way that felt organized and low-stress. Representative review excerpt: "They walked us through every step of the process — from site evaluation and system design to permits and final inspection — making it easy and stress-free."

Flexible scheduling support. Customers also report that the company handled rescheduling and troubleshooting quickly when coordination with utility work or site issues changed. Representative review excerpt: "Despite being abroad, she immediately answered my text, rescheduled the PG&E install, and sent Jonathan back out to perform detailed troubleshooting on the equipment to ensure a seamless setup."

Permit and response delays. Some reviewers describe longer waits tied to permits, PTO, or issue resolution, including cases where follow-up took much longer than expected. Representative review excerpt: "Just be aware that the permit process and getting PTO can cause significant scheduling delays."

Workmanship & site care

Workmanship8.8/10

Installation quality is generally described positively, with reviewers praising careful crews, clean work, and strong on-site professionalism. A few complaints mention wiring issues, roof-related damage, or questions about how certain roof types were handled, but those reports are uncommon relative to the praise.Solar.com's composite of published customer feedback, not a customer quote

Professional, clean crews. Many reviewers say the installation crews were courteous, efficient, and respectful of the property during the work. Representative review excerpt: "Installation was completed on schedule, and the crew was courteous, clean, and efficient."

Careful execution. Several customers note that the crew knew what they were doing and that the work was handled with attention to detail. Representative review excerpt: "Each crew knew what they were doing and were able to explain what the crew who would follow them would be doing the next day."

A few site-quality concerns. A small number of reviewers report issues such as wiring problems or roof-related follow-up after installation. Representative review excerpt: "Some turnover on the team and some knock on work (roof leak cased by install) but they made good on all of it."

Long-term support & performance

Long-Term Support8.7/10

Post-installation feedback is mostly positive, with many reviewers saying their systems are performing well and that follow-up support was solid. The main complaints involve performance interruptions or slower service responses when something failed after turn-on.Solar.com's composite of published customer feedback, not a customer quote

Strong system performance. Many reviewers say their systems are producing as expected and that the overall performance has been strong after activation. Representative review excerpt: "I’m so pleased with how my system is performing."

Good follow-up after issues. Some customers report that the company stayed involved after commissioning and helped address post-installation questions or troubleshooting. Representative review excerpt: "Exceptional, Best-in-Class Experience with Cinnamon Energy Systems: I chose Cinnamon Energy Systems (CES) based on their weekly podcast The Energy Show, their excellent reputation, and my positive history with Barry..."

Service delays after failure. A few reviewers describe frustration when equipment or inverter issues took a long time to get resolved after the system was already running. Representative review excerpt: "However, when the inverter failed during the highest production months of the year, it took them over 2 months to respond."

Bottom line: CINNAMON ENERGY SYSTEMS has a strong overall review profile, with an 8.7/10 Solar.com Installer Score and particularly positive feedback on workmanship, system performance, and day-to-day communication. Reviewers do mention occasional delays, pricing or expectation issues, and some post-install support frustrations, but those complaints are less common than the praise across the corpus.

How this is built: category scores and summaries weigh the company's full published rating record (110 Google reviews averaging 4.8 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 Cinnamon Energy Systems

Company background from published business information and licensing records.

Also files CPUC records as: Cinnamon Solar.

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.
11
2013
26
'14
25
'15
35
'16
43
'17
32
'18
45
'19
53
'20
132
'21
246
'22
373
'23
286
'24
349
'25
94
'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 Cinnamon Energy Systems

What do customers say in Cinnamon Energy Systems reviews?

We analyzed 205 substantive published customer reviews of Cinnamon Energy Systems in full. The company's Solar.com Installer Score is 8.7/10, 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 Cinnamon Energy Systems installed?

Cinnamon Energy Systems appears as installer of record on 1,732+ 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 Cinnamon Energy Systems' 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.