SolarUnion reviews

Eric had worked at a solar nonprofit before, so when he picked Solar Union through EnergySage three to four years ago he knew what to look for. His roof layout made it hard to fit the 16 panels he wanted, and Solar Union stood out as the only installer willing to craft a custom layout — even using drone images to map the array — and they were very responsive through the presale and design stages. He couldn’t get a true apples‑to‑apples price comparison, so cost remains unclear, but the attentive design work was the deciding factor. After several discussions and a few local outages, he opted for a whole‑house BYD battery, which ran nearly a third of the total system cost. The physical installation itself went smoothly, but a prolonged wait for PG&E inspection — driven by the utility’s caution around batteries at the time — held the project up for months. Once approval arrived, the system has operated as intended. A few persistent problems tempered the experience. On the crew side, installer expertise varied, producing a mixed bag of on-site knowledge and frequent phone calls between field techs and more experienced staff. The crew also routed conduit into the house in a sloppy,

Graham S. ran into some connectivity glitches when the installer tied his solar system into the main power supply, but those early hiccups got sorted during setup. He ended up with a durable installation that has been running trouble-free for several years — its long-term reliability is the detail that sticks.

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

After two years of getting proposals that never materialized, Warren discovered Solar Union and ended up with a well-organized residential PV system that went live in early 2020 and immediately began lowering his electric bills. The installation team worked efficiently and completed the job promptly, but the follow-up service proved uneven. In mid-November a Tigo CCA failed; Tigo tech support confirmed the unit needed replacement and shipped a replacement quickly, yet Solar Union did not schedule a technician. Weeks stretched into a roughly two-month wait until he escalated the issue by calling Ivan; that call finally triggered action. The company then promised a visit within a week, it arrived in two, and the techs replaced and commissioned the new CCA. Now the system is operating as intended — the standout detail for a buyer is clear: Solar Union delivers an excellent installation and can fix problems effectively, but getting prompt service may require escalation.

Ashley hired Solar Union in March 2023 to add a 10-panel system to her home alongside an existing 16-panel microinverter array installed in 2019. What ended up defining the project wasn’t the equipment but an unexpected $3,400 bill for a main breaker and subpanel that showed up on the final invoice — a surprise that sparked months of frustrating back-and-forth. From the start Solar Union rushed the process to qualify for NEM 2.0, skipped a full site survey and based their plans on photos Ashley provided. The original contract called for a 10-panel string system with optimizers, but the crew later wanted to switch to microinverters; Ashley agreed as long as the price stayed the same. A site inspection followed three days later, but no further changes were communicated. Installers completed the array in October 2023, payments matched the contract schedule, and the system itself appears to work fine. Permission to operate arrived in January 2024, and that’s when the last payment was due — accompanied by the surprise $3,400 charge for a “cost overrun” on the main breaker and subpanel. Ashley questioned the extra fee because she never approved changes beyond the inverter swap, and a

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.

In March 2023 lucidreamr contracted with Solar Union to add a 10-panel system at a home that already had a 16-panel Enphase microinverter array from 2019 — a tar-and-gravel roof that left few installers willing to take the job. They approved a design on March 28 after Solar Union decided to match the existing microinverters and tie the new panels into the existing Enphase combiner box, saying that change would cost nothing; because of the rush to secure NEM 2 status, the company initially relied on photos and only did an on-site inspection three days later. Installation didn’t happen until October 2023; lucidreamr paid the milestone installments on schedule and the new system has worked without issues since it went live. But when permission to operate arrived in January 2024, the final invoice included an unexpected $3,400 “cost overrun” for the main breaker and subpanel. They had watched an extra box get installed during the crew’s work and were never asked or alerted about additional equipment or charges. Solar Union explained the fee as a response to unforeseen scope discovered during work, yet lucidreamr pushed back — pointing out the original promise of no extra cost, the早

Wes Y. hired SolarUnion to install roof-mounted solar panels and a home battery on his San Francisco-area house, and the crew actually reconfigured the layout and equipment recommendations to better fit his roof. The project stretched over a few weeks; inspectors delayed the final switch-on, but the team stuck with it, troubleshooting and resolving the inspection issues until everything operated correctly. More than two years later, the array has weathered unusually strong local storms with no problems. He warns that the components SolarUnion prefers aren’t as consumer-friendly as Tesla’s—expect to use electrician-oriented web apps rather than a slick retail app—an inconvenience he doesn’t blame on the installer. The team has continued to answer his questions by email after installation, so the lasting impression is careful, durable workmanship plus ongoing support, as long as a buyer is comfortable with pro-level monitoring tools.

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.