How much does cleaning solar panels improve their output?…read more I had my solar panels cleaned recently by @sudandsqueegie. I had them cleaned only a few months earlier by another company, but I recleaned them because two panels were producing lower output and looked obviously dirty. The other panels did not look like they needed cleaning. I was surprised to see that the cleaning improved the output of all the panels from an average of about 340 Wh per panel to about 540 Wh, an increase of about 58%! The first picture is a drone shot of the panels, showing the two panels that were obviously dirty. The first panel picture shows the output of all panels before cleaning, and the second panel picture shows the output after cleaning. The panel output measurements were taken within 1 hour of each other at around 1 pm. It was a partially overcast day, so the output is usually much greater. However, it shows the amount of improvement possible with simple cleaning of the panels, despite them not appearing obviously dirty to the naked eye. It turns out the two panels that looked obviously dirty had cracks in the glass surface, and most of the discoloration was dirt that had seeped underneath the glass coating and could not be removed by cleaning. Surprisingly, not only did the surface cleaning of the two "dirty panels" improve, but it also improved the other panels that did not look like they needed cleaning! The original company that did the cleaning used a brush on a long pole to drip deionized water onto the panels. @sudandsqueegee used a long pole with two rotating brushes, which seemed to be more effective. They were very efficient and professional in their work. I recommend them highly.

Tristan and Eathan were out today for a solar panel cleaning and I added a screen replacement they…read morewere punctual very pleasant and personable and great representatives of the company. Great work at a competitive rate we will for sure use them again for all our related needs.

I highly recommend Shine Bright San Diego. They did an excellent job power washing our pergola, and…read morethe results exceeded our expectations. The office staff was friendly and helpful throughout the process, and everyone we interacted with was courteous, professional, and a pleasure to work with.

I used Shine Bright San Diego to clean my paving stone patio, getting rid of in-ground dirt,…read morediscoloration, weeds etc. I was serviced by Brooks, a very friendly and engaging gentleman. Here are the pluses and minuses of my experience. Pluses: * Rapid and courteous response to my initial request * Quick turnaround for an appointment * Quoted me a 2 hr arrival window, which they met. * Affordable service. * Patio is nice and clean and he cleaned splashes from the adjacent windows/ doors. Minuses: * I had told them about my pool right next to the patio, but Brooks didn't take any special attention to prevent some dirt and sand from entering the pool (e.g, putting down plastic film). Nor did they provide a method for cleaning it afterwards, which led to clogging the pump intake line, requiring a lot of effort on my part to clear. * On the patio itself, I needed to use a blower to remove residual stuff that the power wash didn't deal with. Ideally, they would have done that as part of the service. I would give them 3.5 stars if that was an option: I feel 3 is too harsh. 4 is probably a bit generous given what I needed to do afterwards. So, be wary if you have a pool nearby that they offer you a solution to prevent crap getting in it.

Review Update: After…read moremy initial review, Eric (the sales rep) and Matt (the owner) of Sunline personally reached out to me and was apologetic about the situation. They sent Travis out promptly, who is their electrician where he found that the issue was resolved by replacing a faulty 40-amp breaker that was intermittently providing the necessary voltage, even though measurements initially appear correct. While the breaker issue caused real inconvenience and unexpected costs on my end, the owner was responsive and showed willingness to smooth things over to work toward a resolution. I also want to highlight that the panel upgrade and solar/battery installation itself was clean and well done. The workmanship that Eddie, Manny, Christian and Jamie performed had overall met my expectations, and once the issue was identified, Sunline did step in to correct it. No project is perfect, but how a company responds when problems arise matters a lot. In this case, Sunline's owner and Eric was engaged, responsive, and made a sincere effort to make things right. As an engineer, and after witnessing the symptoms and corrective actions firsthand, I believe the breaker issue was likely a manufacturing defect, and it was unfortunate that it occurred during the holidays. That said, based on how Sunline handled the situation, the overall quality of their work, and the value they offer, I would recommend them and plan to continue using them for future needs.

Sunline did a great job with our solar and battery installation. Several years later, all is…read moreworking better than expected.

This company did an incredible job on our smallish backyard patio and was fairly priced. I'd use…read morehim in a minute. Showed up on time, great scheduling, etc. Will bring back in the future.

I had the siding of my house washed along with the decking around the house, walkways around the…read morehouse, patio covers, and pool decking. Part of my concrete driveway was also done. Russell was my technician and he showed up during the arranged time. He did a very good job and was very respectful of our Home property. For the amount of time and work put in along with the size of the job I thought the cost was fair.

I was so pleased with Matthew's services and so happy to have clean windows again! Matthew worked…read morevery diligently and methodically in cleaning all of my windows and solar panels. I highly recommend Brilliant Window Cleaning and will definitely be using them again!

Great service, on time, guys started on the outside of home as I was running late and we added…read moresolar panels which was super convenient. Took about 3 hours to do 35 windows and 14 panels.

Coastal Window Pros did an excellent job from start to finish. They responded quickly, came out…read moreright away to measure and order a replacement pane after my son accidentally hit a whiffle ball through our bedroom window. The new glass arrived fast, and they had it installed just a couple of days later. The installation team was professional, friendly, and did great work. I really appreciated how easy they made the whole process. Highly recommend!

Steve and his crew are highly professional and above all provide exemplary service. I have…read moreutilized several of his services and am extremely satisfied and highly recommend this company!

Roof masters are a great choice. we had 4 bids. they were the best value. Roof Masters use best…read morematerials and best practices. from the project managers to the owner, all top notch. I would hesitate to use them.

Excellent job accomplished earlier than original schedule. The workers were friendly and courteous…read moreand the owner stopped by to review the work. The roof looks great and I couldn't be happier with both the cost and the result.

Highly recommend Window Shine. Jose and his wife did a beautiful job on my windows this morning. He…read moreuses deionized water run through his filtration filters in his truck. No need for soap and squeezing. Really took his time and has a lot of pride in his workmanship. Window Shine will be my go to window cleaning company.

Jose and Window Shine did a great job cleaning my windows and solar panels here in San Diego (Bay…read morePark). Everything was filthy from recent construction and landscaping. The cost was slightly more than usual window cleaning, but he used a vacuum and scraper tool to get concrete and splatter paint off the windows where it was visible and was able to clear out the window tracks to make opening and closing easier. Jose was super easy to get a hold of and showed up same day to give me an estimate and was able to do the job same week.