Certasun

From initial estimate through implementation the Certasun team performed superbly. The team was well coordinated by Holly, the PM. All on-site personnel, including rooftop installers, battery installers and electricians were professional and respectful of property. I recommend them for anyone considering solar and / or battery storage services.

The sales process, site assessment, and installation were all excellent, with all of my questions & concerns quickly, easily, and earnestly answered. However, 3 weeks after the inspection the program manager informed us that we'd need a new electrical panel since ours needed to be more than 100 amps and therefore we wouldn't pass inspection. Our panel & wiring were 125 amps, and when I repeatedly asked what was the problem with the panel, I couldn't get a reasonable answer. There were ancillary issues that were detailed - proper grounding & a new meter enclosure; but when $4,000 in additional work is reduired, I think proper details are required, especially when some of their assertions were incorrect. We used our own electrician to do the required updates, who charged a fraction of the estimate and was incredulous of the project manager's assertion about our main panel. This delayed the project by 2 months, which was a reasonable trade-off rather than paying the inflated price for the additional work. As stated earlier, we're very happy with the sales process & installation quality, while we can only hope that Certasun will handle the processing and return of the utility and REC rebates according to schedule. The after sales support is still TBD, so a star rating hasn't been done for that section.

Just had my solar panels installed by Certasun and I couldn’t be happier! They made the whole process super easy, took care of everything from the city permit, ComEd rebate, SRECs paperwork, and even the net metering application. I didn’t have to deal with any of the hassle myself. The team was professional, friendly, and kept me updated every step of the way. They answered all my questions along the way. If you’re thinking about going solar, definitely go with Certasun. They know what they’re doing and make the entire process smooth and stress-free.

Every single person in the process was exceptionally kind and competent! Your money and home will be in good hands, go with Certasun.

Prep, installation, and completion were fantastic. The office was very helpful until after turn on. I have asked twice after turn on the status of the Illinois Shine Program. It’s been three weeks without a response.

First and foremost, I appreciate the comprehensive and detailed information Certasun shared about the solar panel system. They patiently addressed all my questions and concerns throughout the process, from the initial consultation to the completion of the project. Their transparency and willingness to educate me about the system stood out. The installation team was exceptional. They performed the installation with precision and ensured that all necessary steps were meticulously followed to pass the inspection. Their professionalism, expertise, and attention to detail were truly commendable. Kudos to the entire team for a job well done! One of the features I truly enjoy is the ability to monitor the system via a user-friendly app on my phone. It allows me to keep track of the devices and analyze the data conveniently, which adds a lot of value to the experience. The entire process was smooth and professional, and I am thoroughly impressed with the service provided. Overall, Certasun is definitely a great company to work with. They deliver on their promises and ensure customer satisfaction at every step. I am already recommending their services to others and will continue to do so. Thank you, Certasun, for an excellent experience!

Very good installation process. Both the Electrical and Solar installers were very professional and very informative. There was very little debris that I had to clean up when they were done. Everything was explained and completely very well. My only complaint was that it took 2 months from the install to the inspection.

My spouse and I are incredibly motivated to purchase and install a solar system at our single-family house in Chicago’s Bowmanville neighborhood. The roof of our house is new and has a large portion that faces south and gets great sun exposure. We also have sun-exposed garage roof space sufficient (with the south side of our home’s roof) to support 9-12 solar panels. We have plans for many high-efficiency electric appliance upgrades and to purchase an EV or plug-in hybrid vehicle, and we hoped to defray the anticipated additional cost for increased electricity usage with a solar system (and be better stewards of the environment). We were particularly driven to get a solar system installed before December 31, 2025, when the federal Residential Clean Energy Credit is now scheduled to end for residential solar systems. ComEd, EnergySage and several competing solar companies all determined in early July 2025 that our house would support a solar system, and we received multiple bids through EnergySage for such a project. After discussions with polite and seemingly knowledgeable Certasun representatives (Holly and Paul), we decided not to pursue other bidders and signed contracts with Certasun to install a solar system and fast EV charger in our garage. At the time we signed our contracts (on July 11, 2025), Certasun's representatives noted we would need trenching from the garage to our house's circuit box to support the garage panels and EV charger and a charge for this trenching was included in our contract. We were approved for financing and promptly made upfront cash payments (on July 15, 2025) to Certasun to start the work. That's when the trouble began. Despite Certasun's promise that it would move quickly on our project and written and verbal commitments to complete our project prior to December 31 (which would be required for the federal tax credit), and despite our immediate response to all interim correspondence from Certasun and requests to submit required information to them and ComEd (for the interconnection agreement), Certasun did not schedule a site assessment until August 28, 2025 (more than six weeks after we signed our contract). The site assessment determined that we would need to move some landscaping features to allow for the trenching from the garage to the house and that our electric panel needed to be moved due to ensure code compliance. The trenching obstacles were no surprise and were known to Certasun at the time we signed our contracts (and we had a landscaper lined up and waiting for information from Certasun to clear the path). The requirement to move the circuit panel was unexpected, but we also had our own electrician ready to promptly do this work as soon as Certasun confirmed the required scope of the electric work. Despite this, and notwithstanding our promise to clear all obstacles to installing the solar system and pleas during a phone call with Holly to allow us just two weeks to complete all work to clear the identified obstacles, Certasun abruptly and without recourse cancelled our contract and returned our payments on September 3, 2025. By this late date, all the other companies that had bid on our solar project in July had filled their installation calendars. In fact, when we submitted another request for bids on EnerySage following Certasun’s abrupt and unreasonable cancellation of our contracts, none of the prior bidders rebid on our project and we received no responses. This late abandonment by Certasun therefore cost us any chance to complete our solar project by December 31, 2025, meaning that any future solar system installation we complete (and we are still interested in installing solar!) will be significantly more expensive. We are confident that our own contractors could have removed all obstacles identified by Certasun quickly (we had even identified an appropriate new location for our circuit box that would have been a quick fix), and, unfortunately, we believe that Certasun used these relatively easy-to-address obstacles as a pretext for abandoning our project because it was smaller and would be less lucrative than larger projects that they may have in the works. We also think it is likely that Certasun over-committed to completing projects prior to December 31, 2025, and decided to use pretextual reasons to jettison smaller homeowners like us so that they can complete the larger projects on their calendar. This was an extremely disheartening experience for us that we believe was entirely avoidable by Certasun (either by more promptly scheduling our site assessment or by allowing us to use our own contractors to address the identified obstacles). For these reasons, we cannot recommend Certasun to potential future customers.

CertaSun made the whole solar process super easy for us. They took care of everything—from designing the setup and installing the panels to handling all the permits and paperwork, even for our incentives and rebates. We didn’t have to worry about a thing. Everyone we worked with was really professional and friendly. They showed up on time, got things done efficiently, and made sure to answer all our questions along the way. Overall, it was a great experience, and we’re really happy we went with CertaSun. Highly recommend!

Certasun showed us where they would be placing our solar panels and asked us how we wanted the piping to travel. They took care of all of the paperwork for our rebates and city inspection. Easy-peasy, and they’re saving us a ton of money in our electric bills.

Certasun did well during the install process. However, after their relationship with SunPower ended because of bankrupty of SunPower they have started treating us like strangers. Don't answer questions truthfully, give you the run around and poor response. Per the Contract THEY are responsible for the warranty of the system. They sold SunPower panels to us. In fact, they called them the BEST and They need to stand behind it. The APP to monitor the one's system is now being charged at $99 per Year. Ridiculous fr Certasun to say that is part of my ongoing cost. I am not paying for something that I have given over $50K for. CertaSun WILL NOT stand behind you based on my experience SO please save yourself some trouble. The CEO is a Booth graduate and should understand what Customer Service should be like. A dissatisfied customer will talk to 10 other people about their experience.

Everything was communicated very professionally, and the entire project completed without any problems. Would recommend to friends and family!

It’s been more that 4 months that this whole process started, they installed the panels in the third month, wait one month for the inspection, and they did not do it right, because the inspection didn’t pass, 2 weeks after still waiting for them to fix the issues. I regretted picking this company for my solar system. Today like many sunny days for the past 44 days the panel in the roof not producing anything they are just getting the sun for nothing.

*this review will be updated* This may be an OK company to work with at some point after all of the dust settles with their previous, exclusive systems supplier, SunPower. When we got the system installed originally in November of 2023, everything was rather smooth. The buying process with Certasun and a 3rd party lender was somewhat cumbersome since everything wasn't handled in-house but it wasn't unlike finding your own lending solutions for other large purchases. Our system worked as-advertised and out-performed specs during the early summer months--a common expectation during long, sunny days. Until one day, I noticed our system seemed to be hit-or-miss. My customer experience (CX) in dealing with post-sales support has been horrendous. Our system has had complete, catastrophic failure going into its 4th consecutive month (as of the author date of this review), we have had 2 separate crews from Certasun out here to reaffirm proper installation. Then they have the audacity to give me an excuse that the power supplied from ComEd is outside of spec (how can they explain that when it's the very same supply ComEd was providing us and those around us earlier?). Now, I'm here waiting on 2-3 day response times to emails to their customer success manager (Bill Wayne) and owner of the company (Josh Lutton) on copy. It's pathetic and such a shame because I contracted with CertaSun due to a handful of recommendations from nearby neighbors in Grosse Pointe Village--their systems are several years older and must've been using batches of equipment prior to SunPower's downfall. I have requested that our system built out of the defunct SunPower panels, inverters, monitoring equipment, etc. be replaced with their latest vendors to which they've declined to respond to in any of my inquiries. It won't be long until I build a case to bring against the firm.

This was our second solar installation. The first was with a different company, which gives me a little basis for comparison. From the start, our salesperson at CertaSun was very knowledgeable, but more importantly, very frank and un-pushy. The conversation was just us asking questions, him generously sharing his time and information, and us both figuring out what makes the most sense for us. It was clear he was not trying to railroad us into the biggest system he could, which I really appreciated. After that, everything went smoothly. The biggest difference between CertaSun and the company that did our first installation is the level of communication. CertaSun responded right away to emails and, better yet, they gave us a lot more information and contacted us whenever there was any update, so we just had fewer questions as the process unfolded. The installation all happened on schedule. CertaSun facilitated easy financing so that we didn't pay out of pocket for the amount that will be reimbursed through tax credit. CertaSun took care of the permitting and inspection through to switching on the panels. I'm confident that we have a reliable partner that we'll stick with for any needs going forward.

Great company, first class! Less than a month from deposit to operating system. They did all the legwork, permits, inspections, and follow-up. Very responsive to the small issue I had. System sized properly and electric bill now at the minimum possible (~$15).

Really great experience. They followed through as promised. Very quick response, very quick service, following the time guideline. They worked with ComEd, helped me with the rebates etc. Their app is pretty good, panels are pretty good as well producing really good energy as promised. I have had it for about 8 months and have no issues so far. They only thing they didn't mention is that you are paying taxes for the rebate money you received and it was a lot (close to $4000 for $18,304 rebate that I received from the state). I highly recommend it. You won't be disappointed.

I was very happy with Certasun and their work in designing and installing my solar power system. Questions I had were answered very quickly. It took less than a day for the installation and then less than 2 weeks to have the system inspected and approved and then have the power company comvert my account to net metering. Certasun handled all of the permitting process and all interactions with the power company and it all went smoothly. Overall it was a very good experience with Certasun.

Excellent company and people to work with. I was kept upto date throughout the project. Highly recommended.

Everyone involved from the first person we spoke to, the project manager and the installers were friendly, knowledgeable, explained the process each step of the way, helped us understand some problems and gave us options for fixing some issues . . . I would recommend Certusun to any friends and family.

Sales contract was very clear and understandable. I didn't need a lawyar to understand it. Timeline for solar energy was close to that predicted, about 10 weeks. Solar installation is working fine since it was turned on about a month ago.

Jon kroft my sales person was very helpful from beginning to the end of installation process. He was present T time of the installation to make sure everything is going good. Good team work. Happy with the company and staff.

I had CertaSun install solar panels a couple of years ago and had the best experience, above anything I could have expected. The sales portion answered all my questions, and I had considerable questions from my research leading up to my contact with them. I couldn't have expected a better experience. However, now, about a year ago, I wanted to add a SunVault battery for storage. My sales contact was slow to respond, didn't seem to want to answer any of my questions and I had to continuously keep after him to get to where I am today. I ended up going to the original sales rep, who was promoted, to get any kind of answers. I was so deep into it by then, I struggled with it, but decided from my first experience to proceed. Now, SunVault installed and operational for a little over 2 months and there's a problem with it. It's been 2 weeks since I was told I'd have answers for availability of the defective/non functioning part and still no response from the 2 emails I've sent. No one seems to know if or when the replacement part will be available to bring my storage to where it should be. IDK what happened, but CertaSun went from a company I would recommend to everyone, to a company I'm fed up with and hate the thought of having to deal with them again for anything. No communication from the team onsite, little or no communication from my "success manager", so here we are. I work far enough away and have to make arrangements for them to access the equipment, but cannot do that when I have no information or timelines.

I recently had solar panels installation on our home. From the consultation step to the final installation, Certasun was always very prompt, informative and professional. All staff members were knowledgeable and detail in answering any questions that I had. Each step in the long process was listed out in the contract, tracked and communicated along the way. I am very happy with the work the whole team performed to complete this project. The final result is beautifully installed panels without any visible conduit on the roof top. The system so far has performed as expected. I will have no hesitation if I have a chance to refer anyone who wishes to install solar to Certasun. Sincerely thanks to the whole team, you did a great job!!

The whole certasun process is simple and straightforward. They designed the system, got all the approvals from city and HOA. Installation was easy, and now the solar system is up and running just as promised. I would do it again without hesitation. The team has been available to answer questions and help explain the timeline and steps along the way

After extensive research and a few sales presentations, we selected CertaSun to install our solar system. Their use of industry leading panels and hardware from SunPower was a factor in our choice. Perhaps more importantly, CertaSun believes that exposed conduit is ugly and I AGREE!! Whenever feasible, conduit should be hidden from view. Much can be run in the attic space eliminating any ON the roof. In my home, I have a hollow chase creating an architectural boxout in the dining room which aligned with my electric meter. I was able to run a conduit from the attic to basement within that chase, this eliminated the visible exposure of the vertical conduit from solar panels to exterior mounted meter box. CertaSun poked a pipe from this basement junction box directly outside to their equipment mounted next to the electric meter. While I installed this hidden conduit for their use, I am sure that Certasun could install pipe hidden in this manner (given a similar situation in your house) and it would rightfully be an added charge, but IMO well worth the ask. The sales and installation process was great. There were some slight delays in some communication. However, it was not TOO delayed and I chalked it up to a busy office in a busy industry in the busy season. And frankly, I want my chosen vendors to be busy. Overall, I was VERY happy with our choice of CertaSun and I suspect you will be as well!

Excellent serivice with timely installtion with cheaper rate than other solar energy providers.

Certasun was truly outstanding! From the salesperson to the project manager to the installation team, everyone was professional and responded immediately. We received weekly email updates on our project so we always had updates. I will recommend that company to my closest friends and my family because I was that impressed.

I recently had the pleasure of working with Certasun for the installation of my residential solar power system, and I couldn't be more thrilled with the experience. From the very beginning, their team displayed exceptional knowledge and professionalism. The communication, starting from the sales team and extending to the project manager, site assessment experts, installation crew, and final approval process, was outstanding. What truly impressed me was the efficiency of their installation crew, who completed the entire project in just one day. Their attention to detail was evident throughout the process, ensuring that every aspect of my solar system was meticulously handled. Certasun took care of everything, from city permitting to inspections, and even the setup of my net-metering account with my utility company, which was approved remarkably quickly. Despite some initial scheduling challenges due to my work commitments, once the site assessment was complete, the project proceeded seamlessly and was even completed ahead of schedule. The fact that I purchased my system directly from Certasun made the entire process incredibly hassle-free. All I had to do was sign a purchase contract, be present for a few key appointments (site assessment, installation, and final inspection), and pay as the project progressed. I can't recommend Certasun enough if you're considering solar power for your home. Their honesty, efficiency, and comprehensive service make them an exceptional choice in the solar industry. Thanks to Certasun, I now have a reliable and environmentally friendly source of energy for my home, and I couldn't be happier with the results.

Certasun has been an excellent company to work with. My main reason is their excellent communication with me about what stage our solar project was in and what to expect in the next steps. My project manager, Holly, was outstanding with her keeping me informed. The installation team was very courteous and answered any questions I had. Overall a great company to work with and great customer experience.

We signed our loan in April, panels were installed in early July, and following the city inspection they're now on in mid-August. Certasun communicated about timeframes really well, and answered all of our questions as they arose. Installation took half a day and we didn't have any issues.

Company was very professional with system installed well ahead of schedule and performing well.

Certasun team has been responsive and professional through our the entire process of installing of my solar system. I'm very satisfied with their work and would recommend them to anyone in Illinois that is considering solar.

Smooth process from start to end, took less than 3 months to have my solar system installed.

I found the experience to be positive from start to finish. The sales rep was knowledgeable and non-pushy for the most part. He was patient with my questions, and offered me different designs based on my requests. Because of the panels I chose, I was given an honest timeline of 6months wait, but they were able to deliver and install after just 3 months. Install and post install experiences were both incredible. Someone from their office sent me weekly updates which was also much appreciated.

Very knowledgeable, ahead of schedule, great installation team, very attentive to details

We were extremely pleased with the experience in every way. Straightforward and totally transparent. Excellent timely communication about everything from start to finish and in between. We had our solar billing reduce our COMED electricity bill to nothing in about 3 months from signing the agreement! We may have been lucky with some of the appointments but all the paperwork (permits, Certificate of completion, etc.) done professionally and hence we had no delays whatsoever. I signed with them purely on personal recommendation of a neighbor and am glad that I did.

Satisfied customer! Communication throughout the entire process was very good and the installation happened significantly earlier than projected. The permitting process with our county was seamless along with the Comed interconnection/netmetering. Build quality appears to be great and the output of the panels meets the expectations.

I did my research, and Certasun does not disappoint. Very happy with my Sun Power system. Looks great, functioning as promised. No ugly conduit was visible on the roof, everything is in the attic. Electrical panel on the side of the house also looks great. All CertaSun staff were professional: great explanations, answered all my questions, careful with my home inside and out. They work with City of Naperville a lot, so permitting and inspection were no problem. Office staff were responsive and made sure I knew what to expect. Worked with me on an installation date. Reserved 2 days, they had it completed in one. The whole process was smooth quick efficient and best of all has been producing energy saving me money since they flipped the switch. Love the Sun Power app. Easy to see current and past production with graphs. CertaSun also completes rebate and tax credit applications. I felt well cared for throughout the process. Thank you CertaSun, I have recommended you to my friends, too

Great company to work with. Install was smooth. Very efficient the team worked great together! System is working excellent. Sun power equipment and application is great! Glad we went with Certasun very pleased!

5 stars for timely communications, being responsive, and keeping me up to date on all changes. This is particularly important given how long the approval process is. Everyone I talked to was informed and helpful. They have great pricing options.

Responsible solar panels company. Great followup and responsive feedback from initial permit application to final installation completion. There is sufficient feedback information in each stage of the project. Any request for additional information or clarification is answered within 48 hours. For our system, the entire process took 6 months even it's going thru the winter months. Our solar system is up for running for 2 months now. The energy generated from the solar system is more than enough to supply our electricity demand. Approximately 20% extra is stored in the Grid for future use.

The CertaSun team were never pushy when my wife and I were going through the decision making process. They were very helpful giving us facts and reworking proposals a number of times. Once we purchased, they had a great app where the entire project was managed out of from a tracking perspective. Communication was still old fashioned by phone and email, which was great for me! The installation crew were very mindful when on our property taking care to not disturb our garden. They got done - very clean job. The inspector and they came a week later, and all was well. I have recommended them to several friends who are now interested after I shows them my month to date savings. We got installed on March 31st, 2023 and should have made this decision years ago.

It was great. Everyone was competent and professional.

Happy with the team, equipment and process, from start to finish. System details / pricing was accurate, system looks good, conduit is hidden, installers didn't leave a mess behind, etc. They handled the State credit, City permits and the HOA approvals, too. Will definitely be recommending CertaSun / SunPower to all the neighbors in our new development.

We loved our experience with Certasun and recommend them to anyone considering solar.

As an Electrical Engineer, I was focused on getting the highest efficiency solar panels and the cleanest look on the roof. Certasun installation has NO conduits running on the roof. The crew was very efficient on installing the panels. The final installation looks great and performs as specified.

Certasun was excellent from start to finish,Bill really knows his products.the installers were very helpful and friendly and very knowledgeable and respectful.The temperatures on installation day was below freezing and they were very friendly and considerate. The finished product looks great and is working great,.My wife and I are very pleased with the quality of the work .

Good Service & Commitment; Completed the project as per the plan and info provided.

Certasun did a fantastic job installing our 12-panel Sunpower system on a challenging roof. The installation looks much better than most others I've seen - close to the roof and no exposed conduit. The system provides more than 90% of our electricity to date (most months Comed bill is $14). Installation inside was very clean with monitoring box mounted where requested. Have had zero issues in past two years - system just works and generates power. Certasun was also very helpful and detailed with the financing and IL rebate process which all came through as expected. Highly recommend!