Diablo Solar Services review

Positive reviews:

“I recently returned to Diablo Solar for swimming pool water solar panels. Darnell from Diablo came out and found I needed a couple of new panels which I anticipated as my system is aging. I had a swimming pool service replace other panels to my dissatisfaction which involved call backs for leaks. Darnell set up the replacement. This business has the experts to fix the problem and will also maintain a record of the warranty on the panels if any panel they install fails. I have a variable speed pool pump and Darnell made recommendations on pump speeds that will work with the panels while factoring in if you have a single or two story home. Frankly, now days it’s rare to find experienced experts with deep knowledge in their particular industry. I highly recommend Diablo Solar.” – Larry L. ⭐⭐⭐⭐⭐ May 13, 2025

“I still highly recommend Diablo Solar! I found a roof leak on Christmas Eve, of course. Called Mike the VP of Diablo the day after Christmas and had a crew of 5 here 30 minutes ahead of scheduled arrival this morning! Anton went into the attic and found the leak within 15 minutes where I said it would be. Thankfully it was an easy fix they missed a joist installing the panel mounts and didn’t use enough sealer to make it water tight originally. They fixed it within an hour. Great service, as always and zero charge! Thank you!” – David B. ⭐⭐⭐⭐⭐ December 27, 2024

Negative reviews:

“Had Diablo Solar installed 2014. last week had a fault light on the inverter. it took 2 days before I got a response and how to fix it. The fault light was fixed but another communication LED was blank. Making about 8+ calls to see if this was normal I’ve never received a call back to answer my question as of this date. To me support is a big reason to choose the right company. When you need them you want support. If this is important to you might reconsider this Co .” – Terry S. ⭐⭐☆☆☆ November 5, 2025

“Unfortunately, I cannot recommend Diablo Solar. I called them about removing a leaking solar panel, and they charged me $206 to give me an estimate ($770). When I called the next day to schedule the work, they said that someone would call me back – but it never happened. I tried three more times over the next few weeks, but still nothing. Terrible customer service.” – Andrew S. ⭐☆☆☆☆ August 5, 2025

Positive reviews:

“Diablo Solar Services has been awesome to work with. A battery operated system and pool solar were installed. The quality of the workmanship, attention to detail and customer service were excellent. The installers really enjoyed their job and team members. They have a great attitude, are respectful, proud of their work and very neat!” – Michelle Shipp ⭐⭐⭐⭐⭐ October 2025

“This is our second time to use Diablo Solar. We originally had rooftop solar installed in 2009 at our previous home in Dublin. We were so happy with the results we decided to go with Diablo Solar at our new home in Livermore. This time we had rooftop solar and pool solar installed. Bryan Raymond was our sales representative. He was there every step of the way including troubleshooting issues that arose because of older equipment that was in use from the previous owner. I would HIGHLY recommend Diablo Solar to anyone in the market for solar!!” – Ken Marlin ⭐⭐⭐⭐⭐ September 2025

Negative reviews:

“This company is a complete rip-off joint. I called them in March requesting help with a damaged panel on my existing installation. I was very specific with them – I don’t want a new system, I want a repair or replacement of a single panel. Do you do that? They assured me they did and would send a technician out to take measurements. The technician arrived and took measurements and then went away and that’s the last I ever heard from them. EXCEPT they keep sending me bills! They haven’t done the work, they haven’t even given me a estimate, but they’re billing me. Today they sent me a late payment notice and tacked on an additional fee – for work they haven’t done! Just to be clear – I’ve written and called trying to get a status. No response, just more bills. Avoid these scammers like the plague.” – Jeff ⭐☆☆☆☆ November 2024

“Used to be great then I think got bought out by a cheap parent company. Pool solar dept Customer service went down the drain and they started to nickel-and-dime every little thing. Have had the same issue for almost 3 years now and have talked with them tens of times and even had technicians come and they always come up with some bad excuse why they can’t help. Frustrating. Don’t recommend at all.” – Riley Miller ⭐☆☆☆☆ November 2024

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Expert Choice

Our Expert Choice badge goes to Diablo Solar Services, which concentrates on serving fewer than 1 state. With a foundation dating back to 1984 and a commitment to not using subcontractors, Diablo Solar Services offers warranties ranging from 10 years, ensuring long-term reliability. Their in-house expertise and quality of work make them a top recommendation for homeowners seeking unparalleled solar solutions. You can expect a wonderfully high-quality solar panel system project, carried out by experienced in-house specialists.