Sales & proposal integrity
Sales Integrity7.4/10
Reviewers mostly describe the sales process as clear, responsive, and free of pressure. Several note detailed estimates and straightforward explanations of scope and expected savings, while a small number of complaints point to concerns about advertising or initial expectations.Solar.com's composite of published customer feedback, not a customer quote
Clear, low-pressure explanations. Reviewers say the team explained how the system would work in plain language and did not push unnecessary upgrades. Several also mention that the proposal details were easy to understand. Representative review excerpt: "What really stood out was how transparent they were--no sales pressure, no confusing jargon, just clear explanations about how everything works, what kind of savings I could expect, and what..."
Detailed scopes and estimates. Some customers describe receiving combined quotes that laid out multiple pieces of work together, including solar, electrical upgrades, battery storage, and roof-related items. That level of detail is described as helpful for setting expectations. Representative review excerpt: "TSP gave me a combined quote for a huge solar array, main service upgrade from 100A to 200A, battery storage, roof repair, and a brand new main panel."
One complaint about advertising expectations. A small number of reviewers report concerns about how the company presented itself before the job started. That pattern appears isolated in the review set but is worth noting. Representative review excerpt: "If you want to make your company look legit, make an honest advertisement."
Price & financing transparency
Price Transparency7.0/10
Most reviewers describe pricing and estimate handling as straightforward, especially when multiple project elements were bundled together. At the same time, a few complaints mention payment timing, warranty-related billing questions, or expectations that were not fully aligned with the final quote.Solar.com's composite of published customer feedback, not a customer quote
Clear bundled pricing. Reviewers often mention that the company provided combined quotes that covered solar equipment, electrical upgrades, roof work, and related repairs. They describe that structure as making the cost picture easier to follow. Representative review excerpt: "TSP gave me a combined quote for a huge solar array, main service upgrade from 100A to 200A, battery storage, roof repair, and a brand new main panel."
Cost-conscious recommendations. Some customers say the team recommended only the work they actually needed and framed the project in a cost-effective way. That suggests a generally transparent approach to pricing discussions. Representative review excerpt: "They know the ins and outs of integrating solar with an old and new roof, so everything was seamless and cost-effective."
Payment and billing concerns. A small set of reviewers report concerns about being asked to pay before inspection or about how warranty-related work was presented financially. These comments do not dominate the category, but they indicate that billing expectations were not always clear to every customer. Representative review excerpt: "And they make you pay the full amount before inspection so once the work is done again, and more outlets are broken, you can't even withhold payment."
Communication & coordination
Communication7.7/10
Reviewers mostly report responsive communication, steady updates, and helpful ownership across the project. The complaint pattern is limited, but it includes missed expectations around follow-up, appointment timing, and project handoffs.Solar.com's composite of published customer feedback, not a customer quote
Responsive and helpful follow-through. Many reviewers say the team responded quickly to questions and took ownership when issues came up. They describe the company as helpful both during the project and after the work was finished. Representative review excerpt: "If you need assistance, this is the company to call as you won't be disappointed!"
Clear problem-solving communication. Reviewers also note that staff explained the work, handled issues directly, and avoided unnecessary upselling. That combination is described as making the process easier to manage. Representative review excerpt: "Prompt, professional and explained the problem; fixed it with no BS, no attempt to up-sell; my "go to" company for future service."
Some coordination complaints. A few reviewers report frustration with follow-up, appointment timing, or getting clear ownership during the project. These comments appear in the minority, but they show that coordination was not seamless for everyone. Representative review excerpt: "Update because although the communication wasn't great, we had an issue come up after everything was done and Mario made sure it was taken care of and did everything he..."
Timeline reliability
Timeline Reliability7.4/10
Most reviewers describe the schedule as dependable, with permitting, approval, and installation moving faster than they expected. A small number of complaints mention delays or slow follow-through, so timing appears generally solid but not flawless.Solar.com's composite of published customer feedback, not a customer quote
Faster-than-expected approvals. Several describe the process as smoother and quicker than they anticipated. Representative review excerpt: "They recognized we’d need to upgrade our electrical panel and got it approved by PG&E and installed within 30 days, when other installers told us 3—4 months!"
On-time installs and smooth scheduling. Customers also report that installation and repair appointments were handled on schedule, with a smooth path from order to completion. That pattern suggests reliable execution for many projects. Representative review excerpt: "They installed my solar battery, got the job on time and it was an extremely smooth process from order to install!"
Occasional delay concerns. A small number of reviewers mention timing issues, including waiting longer than expected for follow-up or completion. These comments are limited, but they show that timelines did not always land exactly as planned. Representative review excerpt: "TSP did a fine job on replacing my faulty LG solar battery under warranty: (1) they were quick to provide an estimate to remove the old one and install the..."
Workmanship & site care
Workmanship8.5/10
This is the strongest-rated category, and reviewers overwhelmingly praise the quality of the installation and related repair work. Customers frequently mention careful roof work, clean execution, and professional crews, while a few complaints describe damage or repeat fixes.Solar.com's composite of published customer feedback, not a customer quote
Careful roof and panel work. Reviewers frequently describe the reroofing and reinstall work as thorough, precise, and well coordinated with the solar system. Several say the crew paid close attention to detail throughout the job. Representative review excerpt: "The reroof was done thoroughly and with great attention to detail, and the solar system was reinstalled seamlessly."
Professional repair and cleanup. Customers also report that installers handled complex repairs, roof issues, and electrical work cleanly and professionally. The overall pattern is that crews left a strong impression for workmanship. Representative review excerpt: "This time, not only did they replace my roof with great precision, but they also tackled a complex electrical panel issue that other installers wouldn't even touch."
A few damage-related complaints. A small number of reviewers mention roof damage, leaks, or repeat repair visits. These complaints are not common in the review set, but they are part of the workmanship record. Representative review excerpt: "I used another Solar Installer originally, and unfortunately they caused multiple leaks and damaged my roof when installing 26 panels."
Long-term support & performance
Long-Term Support7.1/10
Reviewers generally say the company remained helpful after activation, including with warranty work, inverter issues, monitoring, and later troubleshooting. The main caution is that a few customers reported frustration with service follow-up or post-install equipment issues.Solar.com's composite of published customer feedback, not a customer quote
Helpful post-install troubleshooting. Reviewers say the company continued to help after the system was running, including with inverter replacement, monitoring, and service questions. Several describe the support as prompt and practical. Representative review excerpt: "Firstly, they installed a new solar inverter when the solar company gave me the run around for months!"
Warranty and follow-up support. Some customers mention that the team handled warranty-related work and later repair visits with direct communication and quick scheduling. That suggests post-install support was available when issues came up. Representative review excerpt: "Brought up issue to TSP solar owner, Mario, who is very professional responding my question immediately and scheduled technician Junior and his assistant to fix issues within a week."
A few service concerns. A small number of reviewers report dissatisfaction with post-install follow-up or equipment-related outcomes. The complaint volume is limited, but it shows that long-term support was not always seamless. Representative review excerpt: "A group of unqualified people from The solar gurus, the solar pros, or some other worthless company will send a bunch of home depot looking workers from the bed of..."
How this is built: category scores and summaries weigh the company's full published rating record (39 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.