We have had an Enphase solar installation for 10 years now, which has always worked beautifully…read more However, due to regular PG&E outages in our area (Fremont, CA), we decided to add a backup battery to the system. After careful research, we chose Highlight Solar (HS) to handle this installation. We chose the Franklin battery, and Highlight Solar came out to handle the installation in Nov 2025. Sadly, we had some serious issues with the functionality of our solar infrastructure, after the Franklin equipment was installed... the Enphase solar monitoring device (called Envoy) started having trouble communicating with the panels, and therefore would disable them. HS made a couple of different attempts to fix this issue (which was delayed when they went on vacation for a month), so I had to keep cycling the breaker for the panels every morning to get the system working for another day. Fortunately, they were persistent in pursuing the issue, and after returning from vacation in late January, Samir came out and spent a couple of hours on the phone with Enphase support, who suggested a possible solution for this issue. HS then had someone come out to implement Enphase's suggestion, and now my system is working solidly and reliably (Feb 2026). I'm glad HS didn't just give up on us; I'm sure they were just as frustrated as we were by this situation. We certainly didn't expect this to take three months to resolve, but it is working now.

We met with multiple solar companies and settled on Highlight due to both the great recommendations…read moreas well as our experience during the initial process. We asked a LOT of questions, then we asked more, and then some more. Ali, our salesman, remained patient and communicated thoroughly via email or phone, and at all hours even after we had signed the paperwork. The installation process was honestly better than the sales process. The combination of Chris (the foreman who found a solution for all our requests) and his team which worked in awful weather to get our project installed on schedule were amazing. Our inspection, and final handoff were handled by Samir, who answered even more questions, and made sure we were fully set up. From end to end we had a great experience with Highlight Solar and will recommend them as they were to us. Pro tips: If you get a battery you will need to store it until it is installed. Your solar data might not show up on the app for 24-48 hours after installation...don't panic, it will show up eventually and you will see the money you are not spending with PG&E.

Great experience working with O'Sullivan Green Solar. Even…read morethough this was just a small maintenance project of an existing installation, the owner was really invested in achieving a perfect outcome. The company was flexible with scheduling, all work was accomplished perfectly, and the pricing was fair. I would not hesitate to work with O'Sullivan Green Solar on a large installation.

It's been years since Tim was over to install our original system. That's a good thing. It's been…read moreworking flawlessly for almost 8 years. The Solaredge Inverter went out and TIm and his team were out very quickly to get it fixed. All in all, it took just under 2 weeks to get it all fixed. Super happy with the fast turn around and great service. He also gave me a tip on how to setup ethernet on the inverter so I don't have to pay for the monitoring, which I really appreciate. I hope I won't have to call on Tim again anytime soon, but I know if I need anything he and his team will be right there to get it done.

After 12 years of trouble-free operation, one of my Enphase microinverters finally failed. Enphase…read morequickly approved a warranty replacement, and once the new unit arrived, I reached out to several installers for a replacement quote. SunVault Solar offered the best value and was easy to work with from start to finish. The replacement took about 1.5 hours, and the technician was knowledgeable, efficient, and professional. The new microinverter came online immediately and integrated with my existing Enphase system without any problems. Great service, reasonable pricing, and quality work. I'm very happy with the experience and would not hesitate to use SunVault Solar again in the future.

Samir was fantastic to work with; everything went to plan, a rare occurrence with tradespeople…read morethese days. He is honest and offered us a great deal. I wouldn't hesitate to recommend his business to others.

Excellent, professional and easy to work with! Had this…read morecompany take over a solar+battery project abandoned by another company (Greentech developers). They worked with me patiently to explore various options and were flexible in doing just the work that needs to be done. Found a solution, finished the project efficiently and priced it all very reasonably compared to other options I had. Highly recommended!

Indaspec provides excellent customer service! They are very responsive not only in answering my…read morequestions but also quickly scheduling a service call. They are very professional, knowledgeable and friendly. I highly recommended Indaspec!

The Cobalt technicians were amazing. Sarah, Jesus, Omar and Isacc all worked together to help me…read morereplace a faulty inverter. I can't thank them enough as they were prompt, organized, communicated well and very efficient. Thanks to the wonderful team!

Recently, my 20-year-old solar system faded into non-action. Through my neighborhood list serve (in…read moreCrescent Park) I received a referral to Cobalt Power Systems. Following an inspection by Alex Harrison, the lead engineer, I agreed it was time to put in a new system. The old panels were dismantled and by the end of May my new system was in place and up and running. In addition to Alex, who led the project, I met the team of three, led by Mikey, who completed the installation. For anyone either new to solar systems or looking to replace an old one, I highly recommend Cobalt Power Systems for three reasons. (1) Time will tell, but I would say product quality is excellent. (2) Alex provided me with accurate and reasonable cost estimates, so I know what to expect. He also offered payment options. (3) Everyone on the team was a good communicator--ready to answer my questions and accommodate my travel schedules. The funniest thing happened on the first installation date--it rained! The team cheerfully used the time to help me clear out my garage, put the new panels in my garage and organize them so they are ready to use. Everything was completed in less than three months, despite my travel. I highly recommend Cobalt Power Systems to anyone contemplating new or replacement solar panels.

All of a sudden the panels at my mom's house stopped producing energy and I was in a pickle because…read morethe installer went bankrupt years ago. Because of the good experience I had with having Clean Solar install panels at my house I reached out to them to see if they would service panels installed by another, and thankfully they accepted the job. After some back and forth with their customer support, they remotely assessed that the inverter failed and they would install a new one for a reasonable price. Clean Solar employee Jose arrived early for the install and he was very polite and relatable. He replaced the inverter and did not leave until he made sure that the system was back up and running and production was being reported in the app. I recommend Clean Solar to anyone needing their panels serviced or to install a new system. Jose is an excellent employee and my mom had a great experience working with him.

**Update: Carl contacted us to apologize for the few negative experiences and they will definitely…read moretake our feedback seriously and will address and improve these issues. Btw I was going to bump this review to a 4 but working with Nick we decided on 5.** We had a complicated full house renovation this year and signed with Clean Solar for either the Tesla tiles or solar panels and we ended up choosing solar panels + Tesla power walls. I want to give special thanks (and the only reason why I didn't give a 0 star) and appreciation to the members listed as they deserved beyond 5 stars Bill, Nick, Jeremy, Rodger, Louis, Kevin, Albert, Alberto, Carl (CEO). Bill was amazing and helpful in explaining the process and helping us secure the initial funding. You are probably wondering why I am giving this solar company a 3 star. Well it takes 1 bad apple to ruin a team and this is the case. A three day project ended up taking 3+ weeks & we understand that the workload is extremely busy this time of year. However when 1 person is acting unprofessional, crossing the line, asking homeowners to borrow a usb cable to charge their cell phone, super loud, tries to impress (why), doesn't listen to clients (would walk away in mid conversation), act as if he is the owner of the company, talks way too much (not in a good way), talking about his side hustle business, a bit juvenile, not completing and complaining about the job in front of clients plus not showing up when he said he would to complete the job, leaving tools at the site and asking the homeowners to put it in their garage until he returns to pick it up, calls in sick last minute leaving the load to other team members plus more well then this becomes a problem and 0 stars (if possible) especially the amount of money you invest into this project. We also requested that this person not show up again but they kept sending him back. At the end of the project half of the Tesla walls were connected and working but the other half wasn't connecting. At one point our bedrooms electricity didn't work, it wasn't the breakers and Nick was awesome enough to take our after hours call and help us manually override those other 2 disconnected wall panels. The dream team (Nick, Kevin and Albert) resolved the connection and all is working now. Also, Nick stayed late to make sure our Tesla walls were configured and updated properly. Plus , a shout out to Jeremy for staying late as well to help fix a broken issue. Feedback: Organize a team that works well together to effectively complete the project. Provide sexual harassment training (this is excluding people listed here). If a female client doesn't feel comfortable with a person don't resend them back. Also if a homeowner (regardless of being the wife) calls and leaves a message please out of courtesy call back after all I am the client, work and pay the bills too (even though this is my husband's project).

Great engineering team with an exceptional installation team. Price was competitive. Installation…read morewas to schedule. Crew was efficient with high technical capability.

Our 20-year-old SunPower system experienced an inverter failure (SPR-3200). Most of the advertised…read moreSunPower "repair" contractors we contacted seemed more focused on selling a complete system replacement--including roof tear-out and battery backup--rather than offering practical repair options. With our NEM-1 ending in July 2026 and NEM-3 beginning in August, we wanted to explore all viable options. Infinium Solar sales, Jacob Sleep, offered a compatible inverter solution over the phone and the first and only to conduct a thorough on-site inspection of our aging system. Infinium recommended a 5kW inverter (10-year warranty) compatible with our positive-ground SunPower 18-panel array (SPR-220), along with a 15kWh FranklinWH battery (15-year warranty) to prepare for the NEM-3 transition. He also presented an option to upgrade to 12 REC Alpha Pure-RX 460 panels (25-year warranty) but importantly noted that our existing panels appear to be in good condition and could continue performing well beyond their 25-year warranty. That honesty was appreciated. After inspecting our UniRac rails and mounts, Jacob confirmed a full tear-out was unnecessary. He explained that the REC panels could be installed on the existing rails, though a few inches of rail would extend beyond the panel edges. Unlike other contractors, Infinium provided four clear, well-explained options: 1. Replace the failed inverter and upgrade wiring with rapid shutdown devices for the existing panels. 2. Add a 15kWh Franklin battery to the above setup. 3. Install a 15kWh Franklin aPower S hybrid battery/inverter system with required wiring upgrades for the existing panels. 4. Fully modernize the system with a Franklin aPower S hybrid battery/inverter, MAC and meter collar, and 12 REC Alpha Pure-RX 460 panels-- utilizing the existing rails. We chose option 4 to upgrade our solar system with battery back-up. We appreciate Infinium's responsiveness, practical approach, transparency, and willingness to present multiple solutions rather than pushing a full system replacement. Infinium's thorough evaluation and honest recommendations made a complex decision much easier - especially in the absence of the 30% federal tax credit. When we installed our SunPower system 25 years ago the timeline from signed contract to final install was less than 6 weeks including San Jose inspections. We were very dismayed at the current solar system installation timeline. Contract signed June 19th, System operational on September 8th. The Infinium technicians were very adept and efficient - no time wasted. Using the existing conduits, racks, mounts, etc. made the task a lot easier. Stephanie Jacques, the Operations scheduler, advised, guided and followed up with us on the schedule. Everything dealing with the removal, installation and final sign-off seemed to revolve around her. Our timeline was as follows: 06/18/2026 Initial contact with Infinium via phone call/web inquiry 06/18/2026 Same day, sales, Jacob Sleep, inspected our 25-year-old SunPower system 06/19/2026 Contract signed, deposit sent 06/22/2026 Project administrator assigned, conveyed that we wanted the system ASAP 07/07/2026 SunPower system removal - took less than 2.5 hours 07/08/2026 Site survey - photos taken of proposed battery location and current solar layout 07/10/2026 Stucco repaired where inverter, shutoff boxes located. Not great work, had a stucco contractor tidy it up. 07/14/2026 Design phase - 10 days? Existing system! I asked for it to be expedited 07/20/2026 Signed off design 08/12/2026 REC-460 panels installed, overhanging rails cut, PV wiring routed through existing conduit 08/19/2026 FranklinWH aPower S, battery bracket (city) inspection and installation. System is fully installed - PG&E needs to install the meter socket adapter (MSA) - a 10 day window! Also, after PG&E installs the MSA, then the battery comes online and is commissioned by an Infinium tech and final city inspection. 08/28/2026 PG&E installed the MSA 09/08/2026 Inspection scheduled 6-8 weeks ago. FINALLY! We have solar power again! Note: Unfortunately, the city supervisor came out and asked a lot of questions. Dimitri, Infinium battery commissioning guru, patiently answered all the questions. Generally, a 5-10 minute inspection turned into a greater than 30-minute questions and answers session. Bottom Line: Would I use Infinium again? Very likely. The process took longer than expected, but most of that was tied to design, permitting, PG&E, and city inspections. Infinium was the only contractor that seriously discussed repairing our existing system before proposing replacement options. They evaluated what could be reused, what needed to be upgraded, and provided several alternatives with the associated costs and tradeoffs

Matthew was really helpful and nice. It's such a relief to…read moreknow I can always turn to him when things go wrong. Thanks, Matthew!

Starpower has been a great partner for our renewables. Not only did they install a battery system…read morefor us, they also maintained and upgraded our existing PV system. Matthew and Michelle are friendly and helpful, and Matthew is very knowledgeable about all aspects renewable systems. He and his crew installed a FranklinWH system with 3 battery modules, 2 Span panels and a Span Drive EV charger. This new work also required changing the way our existing PV system had been wired. They did it all in a week and got the system running and permits approved too. Later, they came out and upgraded one of our PV strings to new panels and inverter. After all work, they cleaned up and Matthew guided me through using all new systems.