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We recommend Winona Renewable Energy without hesitation. We analyzed dozens of customer reviews and found zero complaints about workmanship, zero complaints about how the sales team treated customers, and just one minor issue about post-install support out of 27 mentions. One homeowner had two dead panels four years after installation, and the company proactively reached out when they noticed the drop in production, then fixed it fast. Another customer waited months for backordered inverters under warranty, and the staff stayed on top of the manufacturer until replacement units arrived. Reviews consistently highlight two strengths: the crew handles permits, utility paperwork, and rebate applications so you don't have to, and the team answers technical questions in plain language long after the panels go live. One reviewer never paid for electricity until they added a separate heating system, then Winona designed an expansion to cover the new load. If you want an installer who'll still pick up the phone years later when something stops working, this is the company.
If you're comparing purely on national brand recognition, you may find a bigger name elsewhere. But if you want a Minnesota contractor who proactively monitors your system and fixes problems before you notice them, Winona Renewable Energy is the clear choice.
Kraig had his solar array put on when the company still operated as Winona Renewables, and roughly four years later Champion Solar — the new owner — reached out after their monitoring showed two panels weren’t producing. He found them easy to work with: they scheduled an inspection quickly, diagnosed the problem, and returned the system to full output in short order. He’s already telling friends about the proactive contact and looks forward to any maintenance-package options the company offers to keep the electricity flowing. The thing that stuck with him was the company spotting the issue first and handling the fix smoothly — a quiet, reliable follow-through that made the service feel trustworthy.
Joe Mathison has been running his solar panels for more than five years and still feels glad he went solar. When a couple of inverters failed under warranty and replacement parts were stuck on manufacturer backorder, Amy kept pressing the issue and made sure he was taken care of. He found that equipment problems happen, but Champion’s follow‑through—especially Amy’s persistence during the backorder—turned what could have been a long hassle into a resolved warranty claim. The detail that stays with him is how the company chased the problem until the service was completed.
Todd and Karen had an 8.06-kW array designed by Tim to meet their household needs, and he personally oversaw a quality installation carried out by Spring Grove Electric. He walked them through every question after the install and is still working with them to increase the array’s capacity because a separate solar thermal system they added last fall raised their electrical demand. Up until that thermal system went in, they never paid for electricity, and the standout of this experience has been Tim’s ongoing hands-on support to scale the PV system so they can regain that net-zero outcome. They have already recommended the company to others based on that combination of careful design, solid installation, and continued follow-up.
Passed screening
Passed screening
Among the longest-standing installers in the market.
Excellent BBB standing. Strong complaint resolution.
Reviews were posted naturally over time.
Joe Mathison has been running his solar panels for more than five years and still feels glad he went solar. When a couple of inverters failed under warranty and replacement parts were stuck on manufacturer backorder, Amy kept pressing the issue and made sure he was taken care of. He found that equipment problems happen, but Champion’s follow‑through—especially Amy’s persistence during the backorder—turned what could have been a long hassle into a resolved warranty claim. The detail that stays with him is how the company chased the problem until the service was completed.
Mike has had a solar system on his farm since 2016. When a few inverters went out recently, Champion Solar stepped in and took the issue to AP on his behalf. Their advocacy got the array back to 100% operation, and he was left relieved that the farm’s system was fully restored. The standout detail: Champion Solar kept pressing the problem with AP until the inverters were resolved and the system returned to full output.
John Wenker hired Champion Solar to install panels on his house and, from the first call through project completion, experienced consistent responsiveness and clear communication. The installation crew worked cleanly and efficiently, leaving the jobsite tidy and the system in place without fuss. At the two-year mark he ran into a couple of service issues; Champion quickly diagnosed what was needed and handled the repairs professionally. He recommended them to friends and neighbors and plans to use them again — what stuck with him most was the company’s prompt, ongoing support long after the panels went up.
Kraig had his solar array put on when the company still operated as Winona Renewables, and roughly four years later Champion Solar — the new owner — reached out after their monitoring showed two panels weren’t producing. He found them easy to work with: they scheduled an inspection quickly, diagnosed the problem, and returned the system to full output in short order. He’s already telling friends about the proactive contact and looks forward to any maintenance-package options the company offers to keep the electricity flowing. The thing that stuck with him was the company spotting the issue first and handling the fix smoothly — a quiet, reliable follow-through that made the service feel trustworthy.
Chereva had a ground-mounted solar array installed in October 2014 and, after more than a year with the system, judged the experience by how the crew handled communication and support. Tim and his team stayed engaged from the first inquiry through the final hookup, keeping her updated when supply-and-demand issues outside their control caused delays. Whenever questions came up, responses arrived quickly and solved the problem, and Tim proved both knowledgeable and unusually willing to help beyond the installation itself. The combination of steady communication during delays and dependable follow-up after the job finished is what stood out most. She plans to call Winona Renewable Energy again when she adds to the array, which is the clearest measure of her confidence in them.
In Winona, Minnesota, lhittner arranged a residential solar installation with Winona Renewable Energy, LLC and hardly had to lift a finger: they provided a little electricity-usage data, approved the final array size, and signed a contract with Xcell while Tim handled the site analysis, engineering and secured eligibility for every incentive available at the time. Nearly three years into operation, the system has been paying off — projected savings put the payback comfortably within the five-year estimate. The standout detail was the turnkey approach: technical work and incentive paperwork were handled for them, producing a fast, measurable return that makes this installer hard to beat in the Winona area.
Laura Vander Wegen wondered why she waited so long to go solar. She had been intimidated by the idea of a solar project, but Champion’s team walked her through every question before she signed, answering each one with patience and clear explanations. She found their smaller, personal approach was exactly what her household needed and felt like a great fit. After the install she was very satisfied — the thing that stood out was the patient, hands-on guidance during the pre-sale process, which turned an overwhelming decision into something straightforward and left her wishing she’d started sooner.
Bridget and Loren discovered several panels on their home system weren’t producing full power and reached out to Amy Pelowski at Champion Solar. Amy responded promptly, monitored the output, determined a part needed replacing, and arranged the repair. Champion Solar installed the new component quickly, and Amy continued to monitor the system afterward to make sure it was functioning properly. They ended up with restored production and were most impressed by the hands-on follow-through — quick diagnosis, timely replacement, and close post-repair monitoring.
Ghost90K had collected 13 solar panels over years of moving and asked Champion Solar to put them to use. Although the panels were an older model and not the company's usual brand, Champion agreed to work with them and took charge of all the city permits and paperwork. The toughest part proved to be getting Xcel to sign off, but Champion wrestled with the utility's requirements and ultimately secured approval, keeping them informed at every stage. What stuck with them most was Champion’s willingness to work with off‑brand, older equipment and to shoulder the red tape — so when they move, Champion will be first on the list of home upgrades.
Long-term satisfaction for Champion Solar holds steady at 5.0 ★. This is better than 76% of installers we looked at.
Long-term reviews carry the most weight in our methodology because they are most representative of what you should be paying for: a system that will perform for years.