Altadena Energy & Solar reviews

Kristen B. spent a lot of time researching solar companies and couldn't decide, until a neighbor pointed her to Altadena Solar. From the moment she met Hans (and Joy) she felt in capable hands, and that connection ultimately pushed her to move forward. Choosing to go solar — and to do it with Hans and Joy — became one of the best decisions she made for her home. A year after the installation she still loves the system and remains genuinely grateful for the team's care. What she remembers most is the personal, steady service from Hans and Joy that turned indecision into confidence.

Chris discovered the clearest sign this installation was worth it a year in: Altadena Energy and Solar’s monitoring alerted them to an inverter fault within a day, and a technician was on site and repaired it within 24 hours under warranty. He had started with a full walkthrough of the system needs — Hans and Joy guided him through sizing and tweaks to maximize efficiency without any high-pressure sales tactics — so he ended up with a setup that fit his house and usage. When permit issues with the city cropped up during installation, Hans stepped in and handled the paperwork so the family didn’t have to worry about delays. Later, when the inverter stopped performing, Hans actually spotted the problem through the system’s remote monitoring, reached out, and arranged the fast service that prevented a long outage; Chris figures it would have been a week or more before he noticed on his own. The whole service interaction — from planning to permits to the rapid warranty repair — left him impressed by the attention and responsiveness. The detail that sticks: proactive monitoring plus a 24-hour repair response made the difference between a nuisance and a non-event.

A year after Hans and his team from Altadena Energy & Solar installed a 3.3 kW system on Leo’s home, he still points to one thing that made the job stand out: they agreed to install a smaller array when many other companies wouldn’t. Hans stepped in, handled the work without fuss, and kept the process painless and straightforward. Over the past year the panels have performed reliably, and he delights in watching his electric meter run backward — even with the air conditioning running during summer. The clearest takeaway is simple and concrete: a modest 3.3 kW system, installed without hassle, that still pushes power back into the grid on hot days.

Jonathan S. had Altadena Solar install a 6.6 kW rooftop system in October 2019, and his delayed review mixes early frustrations with a later, more favorable comparison. He liked the job overall but ran into a couple of aesthetic snags: panels on the flag roof remained visible from the ground, and some equipment ended up mounted close to a window instead of centered between windows so it showed up in the view. He asked Altadena to lower the panel angle to hide them; the crew agreed to check after inspection but then concluded the angle couldn’t be changed, which left him disappointed. Three years on, after choosing a different, closer contractor (Altadena’s quote had been about 10% higher), he installed another system and discovered that installer made technical trade-offs too—selecting a panel upgrade that can’t accommodate a CT for measuring power consumption. That contrast made him reassess Altadena’s work and recognize they were actually quite competent. Practical takeaway: if you care about how the system looks, be on-site during installation to confirm panel angles and equipment placement.

Carmen M. hired small, local Altadena Solar to install panels on her home a couple of years ago and ended up with a system she’s very happy with. She found the crew helpful, reliable and professional, but the detail that stood out was their follow-through: soon after installation a component failed and, because she hadn’t been tracking performance as advised, she didn’t notice the outage — Altadena Solar did. The team ordered the replacement part and put it in at no charge. About a year later she spotted a small round discoloration on her kitchen ceiling and assumed a leak from the solar work; the installers came right away, wiped the stain and discovered it wasn’t a leak at all (likely food prep), handled the visit with kindness, and left her feeling embarrassed but reassured. The one concrete takeaway for a prospective buyer: they proactively caught and fixed an unseen outage for free and responded promptly and politely to a mistaken service call.

Steven M. shopped three solar providers for his large house: two national firms and one local installer. The first national team did a quick inspection, asked to see three months of utility bills and recommended a very large system with a purchase price around $53,000. The second national company offered about 10% less without ever visiting the property. A neighbor then pointed him to Hans Rosenberger at Altadena Energy & Solar. Hans spent more than an hour walking the roof, gardens and mechanical areas, asked detailed questions about usage and expectations, and recommended simple changes to the pool, pond, lighting and habits that would immediately cut energy demand before sizing the array. He ended up investing $29,000, captured a 30% federal tax credit, has not paid a cent in energy bills and even received a $68 refund for excess power in the first year. More than a year later Hans remains involved — monitoring the system remotely and advising on alternative utility tariffs as electric vehicles enter the picture. The detail that sticks: the thorough on-site assessment and ongoing, hands-on support that turned a price-shopping exercise into a smaller, better-performing system and

Poppy C. went solar and, after more than a year with the system on her home, discovered a much smaller electricity bill while the panels ran trouble-free. She credited Hans and his team for their knowledge and helpfulness — their support paired with the system’s steady performance is what truly stood out.

Jon N. discovered, about ten months after the install on his home, that the solar system was producing more energy than the company had projected. After matching their production estimates to his electricity bills, he confirmed they had underpromised and overdelivered — which translated into noticeably larger savings than he expected. He appreciated that the crew was reliable, communicated clearly, and provided a quality system at a fair price, and that the company handled the city permitting and all the paperwork for him. The detail that sticks: conservative performance estimates that turned into unexpectedly strong bill reductions, plus the convenience of having permits and paperwork managed for him.

Wade chose Altadena Energy to put solar on his house and found the team’s ongoing responsiveness to be the real difference. The crew delivered high-quality workmanship on the installation, and whenever he needed help they answered quickly and followed through. He ended up with a well-built system and support that continued after the panels went up — the availability and follow-up is the detail he remembers most.