SolarUnion reviews
• last updated FEB 26, 2026Loading map...
The Verdict
SolarUnion operates in two modes, and your odds depend entirely on which one you get. We analyzed hundreds of reviews and found a company that handles routine installations competently but collapses when anything goes wrong. One homeowner's inverter failed after a single year, SolarUnion blamed the equipment manufacturer and charged $990 for a replacement visit, then took a month to show up. Another customer watched their electrical panel spark and smoke after installation, SolarUnion's third-party crew had loosened critical connections when tapping into existing circuits, the company refused responsibility and the homeowner paid $10,000 to fix it. We found 64 complaints about poor value and 65 about inadequate post-sale support, numbers that track with a disturbing pattern in negative reviews. When systems fail or underperform, you will wait weeks for a response, hear excuses about subcontractors or equipment defects, and often pay out of pocket to resolve problems the company created. The 157 positive workmanship mentions and stories of smooth battery installs tell us SolarUnion can execute standard jobs, but the moment your project requires real accountability or warranty follow-through, you are rolling dice with a $25,000 bet.
If you need custom design work or a tricky roof configuration, SolarUnion has completed those projects successfully. But if your system develops problems after installation, expect slow responses, finger-pointing at manufacturers, and surprise bills for failures under warranty. Skip this gamble and find an installer with a track record of standing behind their work when things go sideways.
Reviews That Shaped Our Verdict
Mary L. invested more than $25,000 in a solar installation that finally went up in the winter of 2023 after a much longer wait than the original quote promised. About a year after the system went live, she discovered the inverter had failed. SolarUnion blamed the SolarEdge inverter and billed her $990 to replace it, which felt shocking given the size of the project and her expectation that a year‑old system would be covered. She questioned why SolarUnion continues to install SolarEdge equipment if failures like this are common, and why customers aren’t warned that an inverter can fail so soon. What felt worse than the charge was the slow follow‑up: nearly a month later she was still waiting for someone to come out and replace the unit, and she experienced little urgency or helpful communication from the company. The lingering detail that sticks is this: after a costly, delayed install, an essential component stopped working after one year, she was asked to pay almost $1,000 for the fix, and service to address it has been slow.
Mamybe W. hired Solar Union in 2023 to install an 18 Cell 7200kw roof-mounted solar system on her home for a total price of $36,544. She ended up chasing the company through a year of missed dates, broken promises and what she believes is a fundamentally botched installation. In 2024 Solar Union canceled install dates repeatedly, and on the last cancellation they nevertheless cashed a $17,772 check even though the contract explicitly prohibited cashing funds before work was finished. Without her knowledge they then brought in subcontractors on 20/01/25 to perform the install; Solar Union never properly monitored the work and may have allowed incorrect layout data to be entered into the SolarEdge app. She first alerted Solar Union on March 31 that the system was producing well under expectations — not even half of the output guaranteed in the contract — and was promised monitoring and follow-up that never happened. Her household includes electrical engineers who traced large, unexplained voltage drops between panels, noted that panels in shade were outperforming those in full sun, and identified what appear to be installation errors: an incorrect optimizer, possibly the wrong-gA
Rich M. hired SolarUnion to install solar on a two-unit condo and ended up facing what he calls a near-disaster: after the out-of-town crew they used drilled into the roof twice, moved panels, and left cables tucked under loose scrap wood, he discovered melting wires where SolarUnion’s installers had tapped into the existing PG&E circuits. The wiring steamed and smelled; he shut the building down because it was literally smoking and he feared a fire with an infant living upstairs. He spent about $55,000 on the two systems and then another roughly $10,000 to have reputable local electricians replace a few short, burned wires and redo loosened connections that he and PG&E traced back to SolarUnion’s contractor. Before the install the condo’s electricals were fine, and after the local repairs everything has run without incident — even with two EV chargers drawing power. SolarUnion initially failed the San Francisco inspection on the first attempt, he says, and returned with a third‑party installer from LA who altered the layout and drilled again. Rich discovered that the crew had even buried cables under moveable wood on the roof. When he raised the safety issue he felt ignored: a
Platforms Monitored
Performance by Work Type
How We Got To Trust Score 59
No Red Flags
Unauthorized Activities
Passed screening
Misleading Claims
Passed screening
Background Check
Serving customers for 11 years
Operating longer than most installers in the market.
BBB Rating: A+
Excellent BBB standing. Strong complaint resolution.
Natural Review Patterns
Reviews were posted naturally over time.
Licensed Contractor
A valid contractor license is on record.
What You Can Expect
Mamybe W. hired Solar Union in 2023 to install an 18 Cell 7200kw roof-mounted solar system on her home for a total price of $36,544. She ended up chasing the company through a year of missed dates, broken promises and what she believes is a fundamentally botched installation. In 2024 Solar Union canceled install dates repeatedly, and on the last cancellation they nevertheless cashed a $17,772 check even though the contract explicitly prohibited cashing funds before work was finished. Without her knowledge they then brought in subcontractors on 20/01/25 to perform the install; Solar Union never properly monitored the work and may have allowed incorrect layout data to be entered into the SolarEdge app. She first alerted Solar Union on March 31 that the system was producing well under expectations — not even half of the output guaranteed in the contract — and was promised monitoring and follow-up that never happened. Her household includes electrical engineers who traced large, unexplained voltage drops between panels, noted that panels in shade were outperforming those in full sun, and identified what appear to be installation errors: an incorrect optimizer, possibly the wrong-gA
Katherine C. signed a contract for a residential solar panel installation with SolarUnion in March/April 2023 and spent the following year waiting for the project to move forward. In July 2024 she received an email that unilaterally canceled the contract, and had to contact the company herself to find out why. SolarUnion admitted on calls and in writing that the permitting team had never submitted the application, which meant she lost eligibility for the more favorable NEM 2.0 net‑metering rate and would only be able to proceed under NEM 3.0. The company framed the outcome as unavoidable — "no way around it" — and declined any discount or negotiation to compensate for the lost value. She also encountered rudeness when trying to resolve the issue. The detail that lingers is concrete: a paperwork oversight cost her a materially better tariff, and the installer canceled the contract and refused to make financial amends.
briancibula discovered the trouble right after installers finished—the company had skipped a preinstall check with PG&E that would have revealed the neighborhood transformer needed upgrading. The crew went ahead anyway, and only after the panels were on the roof did he learn the grid-side hardware blocked activation. More than 1.5 years later the system still sits offline, and he says the unused array is costing him money every day. Attempts to escalate reached only project managers and customer-experience staff; the company’s owners never stepped in. The clearest image to carry away: a completed installation that never produced power because a basic utility check was missed, leaving the homeowner stuck waiting while bills keep coming.