Timothy | Parkville, Maryland | 10/30/2025
My experience with Cosmo Solaris was ideal. Sierra was very communicative and helpful throughout the whole process. They have a 70 day signing to installation guarantee which was why I went with them and I'm glad I did!
Jeff | Bellefonte, Pennsylvania | 07/20/2025
Superior Customer Service
I took a long time to explore solar and ultimately decided not to move forward. Ozman from Cosmo Solaris was fantastic to work with during the sales process and by far had the best communication skills of anyone out there. The problem was on my end, not wanting to finance the system at the current rates, but if my personal situation was different, I would have not hesitated to move forward with Cosmo Solaris. In fact, I told him to hold on to my bid just in case anything changes. I highly recommend this company for straightforward, honest pricing, and Ozman directly, who really knows his product.
Richard and Shawn | Vinton, Virginia | 06/28/2025
Cannot recommend Cosmo Solaris Highly Enough!
If you’re looking for a home solar system, I cannot recommend Cosmo Solaris highly enough. We used Energy Sage to help us gather quotes and figure out how to analyze them on an apples-to-apples basis. My wife and I initially wanted to just partially replace our grid purchased electrical energy to help reduce our carbon footprint. But when we ran the numbers over a 15-year time frame, it didn’t make financial sense for us. Knowing that energy costs will just keep going up, the cost of a smaller, partial system wasn’t viable. We went back to the two best quotes that we had received and spoke with their sales reps. Hassan at Cosmo Solaris was just awesome. We asked him, how close to 100% energy replacement can you get us for no more than “X” number of dollars? We asked the other company the same question and gave them the same cost limit. Hassan came back with a proposal for 100% replacement at our budget—18.9 kW system with guaranteed 26,600 KWh annual production minimum. the other company’s answer was 78%. I’m a retired engineer so I dug deep into Cosmo Solaris’ quote and examined the engineering documents and researched the parts they proposed (panels, rails/mounts, microinverters, etc.). Their proposal did not cut any corners; everything was top of the line. Cosmo Solaris included purchasing a 3rd party 30-year warranty insurance on every part and the labor for the whole system. Other companies touted their own warranty and the various parts manufacturer’s warranties. Well, I know from hard experience, a warranty is only good for as long as that company remains in business. With Cosmo Solaris offering a 3rd party warranty from an insurance company, if anything goes wrong for the next 30 years and Cosmo Solaris or any of the various parts manufacturers go out of business, we’re still fully covered, the insurance will pay for equivalent parts and pay for labor. Awesome peace of mind. After signing the contract, Cosmo Solaris earned top marks for communication (thank you Martin!) and making good on all promises. The system was installed on time (actually finished a little early), inspection went smoothly because everything was done correctly, and when we got final approval from our grid provider, my wife and I threw the switch together to go live! Energy Sage helped us evaluate the financial side very well, in our case our breakeven will be in about six years (due to the unusually high cost of energy where we live) since we purchased outright and thus no interest to pay. Yes, there is Present Cost of Money and Lost Opportunity cost if you go that deep, however that is all more than offset by the 30% Federal Tax rebate and the state credits (SRECs-which Cosmo Solaris guaranteed for 15 years). An advisor at Energy Sage compared our system to buying a six-year annuity, once we’re past that six-year breakeven point our Cosmo Solaris system will pay thousands of dollars every year in “dividends” providing free energy for 30+ years! Thank you, Cosmo Solaris and Energy Sage.
Yolanda | Hanover, Maryland | 06/16/2025
Exceptional Service, TOP Notch Products
I'm so happy that I had the opportunity to work with Ozman for this proposal. He was very detailed, answered all my questions and was a true professional. I felt confident in the process and very knowledgeable after speaking with him. My proposal included quality panels, inverts and materials at a very reasonable price when compared to other companies and I checked a lot of places!
Calvin | Carlisle, Pennsylvania | 06/15/2025
Awesome!
Great experience! Amazing products and customer service.
DMcG | Bristol, Virginia | 05/20/2025
Thank you Cosmo Solaris!
I am so pleased with my solar panels from Cosmo Solaris! Mike and Ozman were so patient and helpful in helping me design a small enough system to offset my utility bill without taking on a massive debt. Many other solar companies I researched had much larger minimum requirements for systems to include installation without requiring me to install it myself. The installation team at SunRay Solar were super friendly and knowledgeable. I haven't set up the app to monitor my production yet since I'm awaiting the Wi-Fi antenna I need, but it should be here any day now and I will start seeing all the benefits of our efforts. Overall this long-term investment in reducing my energy bills and being ready for an outage has been an excellent choice. I can't wait to see my first low utility bill!
V Pennsylvania | Broomall, Pennsylvania | 05/14/2025
Excellent Service
Ozman had provided the best service. He was on top of everything and provided a honest answers to all our questions. We had one issue arise during the process and he jumped in and got the right people on the phone to resolve things in a day. I would recommend him to friends and family if they go solar.
Brian Walker | Potomac, Maryland | 05/07/2025
Good experience with Cosmo Solaris
Cosmo Solaris installed an 8 kW rooftop solar array on my townhouse in MD. It was a very smooth process working with them. They took care of everything, including a pre-design inspection, structural review, design, and permitting. The entire installation was completed in one day, the inspection and getting the PTO went smoothly, then they helped with setting up the SREC trading account. The system was also online in just under 10 weeks from contract signing, as was their guarantee! I am happy with my choice to use Cosmo Solaris and would recommend them to anyone!
Srini Samayam | Aldie, Virginia | 05/05/2025
Very Professional and Excellent service
We are very happy with Cosmo Solaris Solar panel’s installation. They took care of everything from start to finish (HOA, County approvals and Net metering connection). Excellent service!!!
Ryan Jung | Yorktown, Virginia | 05/04/2025
I recently had a solar panel system installed by Cosmo Solaris, and the experience has been excellent from start to finish. The system is now up and running smoothly, and I’m already seeing great performance. I want to especially thank Martin, the project manager, for his professionalism and thorough oversight of the installation process. His communication and attention to detail gave me great peace of mind. I also want to thank Ozman, the sales representative, for patiently walking me through the options and helping me choose the right system for my home. Their team made the process smooth and stress-free. I highly recommend Cosmo Solaris for anyone considering solar—they deliver quality, reliability, and outstanding customer service.
