Best solar companies California Roi Solar

Roi Solar Reviews

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

10verified installs in California utility records*
5recent installs, 2025-26 records*
2022first year in county records
8.0/10Solar.com Score · 71 reviews analyzed

Solar.com Installer Score for Roi Solar

One score, computed the same way for every installer. We read the full text of all 71 substantive published Roi Solar review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

8.0/10

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

Synthesized from 71 substantive customer review texts (78 published reviews collected).

Google 4.9★ · 74 reviewsYelp 5.0★ · 4 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.9.8

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

11 reviews speak to this · 11 praise · 0 complaints

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

3 reviews speak to this · 3 praise · 0 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.7.7

27 reviews speak to this · 25 praise · 2 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.6.7

7 reviews speak to this · 5 praise · 2 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.7.9

21 reviews speak to this · 20 praise · 1 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.6.8

20 reviews speak to this · 18 praise · 2 complaints

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

How does Roi Solar 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 Roi Solar 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.
Alameda County10520226.9 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.

Roi Solar 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 generally describe the sales process as clear, patient, and straightforward. They say proposals and expectations were explained well, with little evidence of pressure or confusion in the reviewed set.Solar.com's composite of published customer feedback, not a customer quote

Clear explanations. Reviewers say the process was explained in a way that made solar feel understandable, with questions answered directly and concerns addressed. Several describe the initial consultation and proposal as clear and convincing. Representative review excerpt: "He presents the entire process of going solar clearly and convincingly."

Personalized guidance. Customers report that representatives took time to tailor recommendations to their needs, including equipment choices. One reviewer said the right battery was selected after a home visit and detailed Q&A. Representative review excerpt: "Marvin came out to my home personally, took the time to answer all my questions and address every concern, and made sure I got the right battery for my needs..."

Plainspoken follow-through. Reviewers also describe the team as honest and consistent about what was agreed to, with expectations carried through into delivery. The available reviews do not show complaint patterns in this category. Representative review excerpt: "The owner, Sean, his Operations Manager, Cane, our assigned Electrician, Robert, and their Administrator Heather all spoke honestly and plainly, and followed through and delivered what we agreed to."

Price & financing transparency

Price Transparency6.9/10

Feedback on pricing and financing is limited but favorable. Reviewers who mentioned cost said they were happy with the price and system, and the corpus does not show recurring complaints about deposits, refunds, or surprise charges.Solar.com's composite of published customer feedback, not a customer quote

Satisfied with pricing. Reviewers who commented on cost said they were pleased with the price and felt good about the overall system value. The review set does not surface a broader pattern of pricing disputes. Representative review excerpt: "Very happy with the choice to go solar and even more happy with price and system from Sean and R.O.I."

No recurring billing complaints. In the available evidence, reviewers do not raise repeated concerns about financing terms, deposits, or unexpected added costs. The limited sample still points more toward clarity than confusion. Representative review excerpt: "Returned my text or phone calls every time, even though it was just asking advice or info on solar in general."

General confidence in value. Some reviewers link their positive pricing view to having a system that met their needs and expectations. Because the evidence base here is small, this should be read as limited but favorable feedback rather than a broad conclusion. Representative review excerpt: "I had an issue where a secondary breaker box appeared to have shocked someone who simply touched it, and I called ROI thinking they had last worked on that breaker..."

Communication & coordination

Communication7.7/10

Most reviewers describe communication as responsive and hands-on, especially when follow-up or manufacturer coordination was needed. There are a small number of complaints about office miscommunication or delays, but praise clearly outweighs them in the reviewed set.Solar.com's composite of published customer feedback, not a customer quote

Responsive follow-up. Reviewers frequently say the team answered calls and texts promptly and kept working the issue until it was resolved. Several describe repeated follow-up visits or quick scheduling when parts were needed. Representative review excerpt: "Returned my text or phone calls every time, even though it was just asking advice or info on solar in general."

Help with manufacturer issues. Customers report that the company helped coordinate with manufacturers and stayed involved after the initial work was done. One reviewer said the team worked with both the customer and the manufacturer to address an ongoing issue. Representative review excerpt: "They came out and have been working with me and the manufacturer (my hardware is still under warranty) to address the issue."

Occasional office miscommunication. A small number of reviewers describe miscommunications with office staff or coordination problems during the project. These complaints appear less common than the positive reports of direct, persistent communication. Representative review excerpt: "I was hesitant at first due to miscommunications with the office staff but he reassured me that everything is now connected and working as it should be."

Timeline reliability

Timeline Reliability6.7/10

Timeline feedback is mixed. Many reviewers say the team worked efficiently and met tight schedules, but a smaller set describes installation delays, inspection setbacks, or paperwork slowdowns before activation.Solar.com's composite of published customer feedback, not a customer quote

Efficient projects. Several reviewers say the work moved quickly once underway, with some noting short installation windows or readiness for inspection. Others describe the team as professional and able to keep a strict timeline. Representative review excerpt: "The actual installation took less than 5 weeks, and my wife and I are so happy with their process from start to finish."

Prepared for inspection. Customers also mention crews arriving early and being ready for the inspector, which suggests solid day-of coordination when the schedule stayed on track. These comments point to good execution when the project was moving normally. Representative review excerpt: "Timothy arrived early and was ready for the inspector."

Delay and paperwork complaints. A smaller set of reviewers report last-minute delays, failed inspections, or slow submission of activation paperwork. These complaints make timeline reliability the most uneven part of the review picture. Representative review excerpt: "They called to delay our installation the afternoon before they were supposed to start, then our system failed the first inspection, then unexplained delay in them submitting paperwork to power..."

Workmanship & site care

Workmanship7.9/10

Installation feedback is strongly positive overall. Reviewers praise the crews for professionalism, speed, and cleanliness, while only one complaint pattern in the source set points to an installation/inspection issue.Solar.com's composite of published customer feedback, not a customer quote

Professional crews. Reviewers repeatedly describe the installers as professional, thorough, and competent. Several say the crew handled the work quickly while still doing it carefully. Representative review excerpt: "The techs who came to install were very thorough & competent and got through very fast, and left the job site as clean as it was before they got there."

Clean and respectful job sites. Customers also mention that the crew left the site clean and answered questions well during the process. This points to good site care alongside solid installation workmanship. Representative review excerpt: "The installers were very professional, and the front office answered all my questions over the phone."

One installation setback. A small number of reviews connect an installation delay with an initial inspection failure and later follow-up issues. That complaint appears isolated against an otherwise positive workmanship record. Representative review excerpt: "They called to delay our installation the afternoon before they were supposed to start, then our system failed the first inspection, then unexplained delay in them submitting paperwork to power..."

Long-term support & performance

Long-Term Support6.8/10

Post-install support and system performance reviews are mostly positive, especially when customers needed help with repairs, warranty coordination, or service calls. Still, a few reviewers describe unresolved production or warranty-related problems, so this category reads as positive-to-mixed rather than uniformly strong.Solar.com's composite of published customer feedback, not a customer quote

Helpful after turn-on. Reviewers say the company stayed involved after installation and helped coordinate repairs or manufacturer communication when issues came up. Some also mention service calls being handled without added charges when the issue was not caused by the company. Representative review excerpt: "They came out and have been working with me and the manufacturer (my hardware is still under warranty) to address the issue."

Support for system issues. Customers describe the team returning to address components that stopped working and helping get systems back on track. These comments suggest the company did not disappear after the sale for many reviewers. Representative review excerpt: "Recently, a component of our system stopped working."

Unresolved performance or warranty concerns. A smaller set of reviewers report prolonged problems with non-producing systems or warranty-related delays. Representative review excerpt: "Well, Sun Power went bankrupt and I was stuck with a non working system for overt a year."

Bottom line: ROI SOLAR’s review profile is strongest on sales clarity, communication, and installation quality, with reviewers often describing a responsive and professional team. The softer areas are timeline reliability and long-term support, where a smaller number of customers report delays or post-install issues. Overall, the review corpus points to a generally positive customer experience with some unevenness after installation.

How this is built: category scores and summaries weigh the company's full published rating record (74 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 Roi Solar

Company background from published business information and licensing records.

Also files CPUC records as: Roi Solar 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
2021
8
'22
7
'23
2
'24
17
'25
26
'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 Roi Solar

What do customers say in Roi Solar reviews?

We analyzed 71 substantive published customer reviews of Roi Solar in full. The company's Solar.com Installer Score is 8.0/10, 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 Roi Solar installed?

Roi Solar appears as installer of record on 10+ 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 Roi Solar'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.