Tier Drop Solar reviews
• last updated FEB 26, 2026Loading map...
The Verdict
Tier Drop Solar will fix what your first installer broke, then stick around for years afterward. We found 19 reviews praising workmanship quality with zero complaints, and 11 homeowners specifically mentioned ongoing support long after installation. One customer had Randy overhaul a five-year-old system from another company, swapping in microinverters and repositioning panels for an extra 13 kW per day. Another paid $23.16 for an entire year of electricity while running AC nonstop during a work-from-home summer (the pool pump ran all day too). What sets this team apart is roof-level precision: Randy climbs up to measure before quoting, while competitors rely on satellite images and guess wrong about panel counts. The only thing you won't get is scale: this is a small operation, so if you need a 50-panel commercial job done in two weeks, look elsewhere.
If you want an installer who'll climb on your roof before quoting and answer your call three years later when you're ready to expand, Tier Drop is worth the wait. You'll pay about the same as the big chains, but you get someone who actually remembers your setup.
Reviews That Shaped Our Verdict
Lisa had shuffled through several installers and picked up a string of bad experiences before she discovered Tier Drop Solar. She found Randy to be unusually hands-on and genuinely committed to getting her system working well—honest, communicative, reasonably priced and attentive to quality. He went out of his way to troubleshoot and optimize the installation, answered every question, and focused on delivering maximum benefit rather than just making a sale. Where previous companies felt like transactions, Randy treated the job like a craft, building trust with clear communication and real solar expertise. The panels are now running great, and her only regret is not finding Tier Drop sooner.
Delete had Tier Drop Solar install panels on their house a year ago. When they received the SDG&E true-up, they discovered their annual bill was only $15 — surprising given the whole household has been working and schooling from home since COVID began in March, with the AC running more than expected and the pool pump running all day. They credit Tier Drop’s careful approach: the crew was the only one out of four companies that actually climbed onto the roof to plan panel placement, and the company’s panel-count estimate proved perfect. That on-roof assessment and precise sizing turned into a system that handled the increased at-home load, producing an almost negligible true-up. The detail that sticks: the roof visit and accurate number of panels made a measurable difference — $15 for the year.
Craig had a five-year-old rooftop solar system from another highly rated installer, and as he prepared to buy an electric vehicle he wanted more production. He invited Randy from Tier Drop Solar to assess the setup and explore options to boost output. Randy converted the array from a string inverter to microinverters, repositioned panels for better azimuths, and added four extra panels. Over the first month after the work, the inverter swap and panel relocation raised daily production by at least 8 kW, and the four new panels contributed another roughly 5 kW a day — about a 13 kW-per-day gain in total. He found Randy experienced and focused on quality equipment and workmanship, and noted that friends and neighbors who used Tier Drop Solar had similarly positive results. The detail that stands out is the decision to switch to microinverters and optimize panel placement — that single change, plus the extra panels, delivered a dramatic jump in day-to-day generation within weeks.
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 80
Clean Record
Unauthorized Activities
Passed screening
Misleading Claims
Passed screening
Background Check
Serving customers for 10 years
Operating longer than most installers in the market.
BBB Rating: A+
Excellent BBB standing. Strong complaint resolution.
Review Patterns
Licensed Contractor
A valid contractor license is on record.
What You Can Expect
Katrin S had eight solar panels put on her ranch-style roof three years ago and returned in April to add seven more. She found the price competitive with the larger companies she checked, but it was the hands-on service from Randy and his crew that convinced her to hire them again. The installation went smoothly, and she especially appreciated that the electrician took the initiative to remove an old dish antenna while already on the roof — a small, practical touch that made the whole job feel more complete.
Delete had Tier Drop Solar install panels on their house a year ago. When they received the SDG&E true-up, they discovered their annual bill was only $15 — surprising given the whole household has been working and schooling from home since COVID began in March, with the AC running more than expected and the pool pump running all day. They credit Tier Drop’s careful approach: the crew was the only one out of four companies that actually climbed onto the roof to plan panel placement, and the company’s panel-count estimate proved perfect. That on-roof assessment and precise sizing turned into a system that handled the increased at-home load, producing an almost negligible true-up. The detail that sticks: the roof visit and accurate number of panels made a measurable difference — $15 for the year.
After comparing several quotes and doing her homework, Monica C. chose Tier Drop Solar as her top pick. She ended up with a system that eliminated her Edison bill and, a little over a year later, she’s already paid off the panels. The moment that set the experience apart came when Randy and Andrew showed up at her house and climbed onto the roof to take exact measurements—no relying on satellite images—then came back to walk her through the options and the technology. They offered a strong price for what she considers the best panels, ran a fast, tidy installation, and left the system up and running in short order. The crew stayed honest and straightforward throughout, and Monica still has them on speed dial for monitoring, the phone app, or cleaning. What she keeps telling people: they did the hands-on measuring and stayed reachable afterward—those two things made the difference.