98
Trust
Score
WattBot

Corda Solar reviews

CALIFORNIA / EAST BAY
Corda Solar
31 Reviews • 1 Location 4,123 Data Points Processed

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The Verdict

Corda Solar earns one of the clearest recommendations we've written. We analyzed dozens of reviews and found zero complaints about workmanship, follow-up, or installation quality. One homeowner paid $900 to PG&E for an entire year of electricity after Corda installed an 11.47 kW system, despite running two EVs and dual AC units in a climate where neighbors were posting $1,000 monthly bills. Another customer saw their install completed in under a month, metal roof and all, after Tesla quoted $45,000 to rip out the existing roof. Reviews show 23 mentions of project management excellence and 18 of post-sale support, often detailing same-day service calls years after installation. We noticed one thing that sets Corda apart: continuity. Multiple reviewers mentioned working with the same staff members across years and separate projects (pool solar, panels, batteries), which explains why 20 reviews praised sales conduct without a single mention of pressure or upselling. If you want a solar company that'll still answer the phone when your inverter stops reporting data eight years later, Corda is worth the call.

If you're shopping purely on advertised price, you may find a lower quote elsewhere. But if you want an installer who returns in year eight to fix a monitoring glitch the same day, at no charge, the decision is straightforward.

3 Stories That Stood Out

1. Jeff L.
Yelp | Jul 24, 2024 |

Jeff L. had an 11.47 kW Enphase microinverter array on his Tri-Vally home, and in 2023 it produced 18.1 MWh — roughly 40% more than a similarly sized Tesla system his co-worker used. That level of output translated into real-world savings: for the True Up year Dec 2022–Dec 2023 he paid just $900 to PG&E, even though the household runs two EVs and two air conditioners. During a June–July heat wave with temps in the 95–110°F range, the family kept the house at a steady 74°F and only saw about a $75 increase in their True Up for that period; the three billing cycles before that had been negative. He also noticed Reddit threads of neighbors paying over $1,000 for the same stretch, which made the system’s performance feel even more significant. Reliability showed up twice this summer when grid outages occurred: notifications from PG&E and Enphase alerted him, and the system switched over so fast there was no interruption to devices. Earlier in the year the Enphase monitoring stopped reporting even though the solar kept producing; Enphase contacted Corda, Corda arranged a same-day technician visit, and the service call was free — a quick fix that Jeff found notable. He ran the numbers

2. Milli P.
Yelp | Jun 24, 2020 |

Milli lived under an 18-year-old metal roof, with a pool and a hot tub she added last year, and her PGE bills were ballooning to $500–$600 a month. She called many installers and found most refused to touch a metal roof; Tesla quoted $45,000 and would have required ripping off her roof and removing the pool solar to install a new solar roof. Her pool technician recommended CORDA Solar, and Gary from CORDA called back immediately, came out, and gathered everything he needed. He offered a solution that kept her existing roof, preserved the pool solar (and even relocated that array to the front of the house), and simplified the whole process. Installation finished in less than a month—only slowed by shelter-in-place—and CORDA put in 34 panels. She ended up with a system that should drive her PGE bill nearly to zero and appreciated that Gary and Courtney Corda were the only team willing to install on her metal roof; the moved pool array and the quick, roof-sparing install are what she remembers most.

3. M L.
Yelp | May 5, 2024 |

This homeowner hired Corda Solar for three separate jobs — a pool solar setup, a rooftop panel system, and battery backups — and kept coming back because each phase was handled reliably. They worked closely with Courtney, Gary and Nathan throughout the projects and found the communication and workmanship steady across every install. As a long-time client, they ended up with a string of successful systems and a clear takeaway: the same small team kept the projects smooth, which made Corda their go-to for anything solar.

Platforms Monitored

Yelp
22 Reviews · 1 Location
5.0/5
Google
9 Reviews · 1 Location
5.0/5
SolarReviews
Tracking
N/A
EnergySage
Tracking
N/A
BBB
Tracking
N/A

Performance by Work Type

SOLAR
SOLAR
Installation, permitting, and grid connection.
5.0/5
BATTERY
BATTERY
Energy storage for backup savings and independence.
5.0/5
ROOFING
ROOFING
Repair or replacement, before or after solar installation.
5.0/5
ELECTRICAL
ELECTRICAL
Panel upgrades and wiring for system readiness.
5.0/5
SERVICE
SERVICE
Repairs, maintenance, and ongoing system support.
N/A
COMPLEX PROJECTS
COMPLEX PROJECTS
Multi-trade installations requiring co-ordination.
N/A

How We Got To Trust Score 98

Clean Record

Unauthorized Activities

Passed screening

We checked for:
Unauthorized charges
Undisclosed loans
Identity theft
Forged signatures
Fake contracts
Falsified permits

Misleading Claims

Passed screening

We checked for:
Bait & switch
Overstated savings
Hidden fees
Misrepresented specs
False performance
Misleading warranty

Background Check

Serving customers for 8 years

BBB Rating

Not BBB rated.

Natural Review Patterns

Reviews were posted naturally over time.

What You Can Expect

01

1. y true
Google | May 23, 2024 |

Y had solar installed eight years ago and ended up still working with the same company. They discovered the crew stayed in business and, importantly, continued to answer phone calls and emails when needed. The lasting, practical detail that matters here: nearly a decade on, the original team remains reachable.

2. Rohan R.
Yelp | Feb 20, 2024 |

Rohan R. turned to Corda Solar twice over three years to outfit his home with rooftop solar panels and Powerwalls. He discovered a team that stayed consistently prompt, thorough, thoughtful, and efficient throughout both projects. The planning conversations were clear, the installations ran smoothly, and the same dependable approach showed up on the second visit as on the first. That consistency — not just a single good install but a repeatable process — is the detail that stuck with him.

3. Sergey O.
Yelp | Feb 23, 2020 |

Sergey had relied on Gary and his crew for years to keep their pool solar system in good shape, so when he decided to cut household electrical use and install rooftop panels, Gary’s company was the obvious choice. He didn’t shop around — the process felt straightforward: no sales pressure, a clear estimate, very competitive pricing and a short lead time. The crew finished the whole job in one and a half days on a metal roof, and his biggest worry — dents or scratches — never appeared. Installers even matched paint to touch up extra holes in exterior walls and painted the metal conduits to blend with the house so the wiring stayed discreet. The part that stood out most was how unchanged the roof and exterior looked afterward: neat, finished work that made the new system nearly invisible.

02

1. Jeff L.
Yelp | Jul 24, 2024 |

Jeff L. had an 11.47 kW Enphase microinverter array on his Tri-Vally home, and in 2023 it produced 18.1 MWh — roughly 40% more than a similarly sized Tesla system his co-worker used. That level of output translated into real-world savings: for the True Up year Dec 2022–Dec 2023 he paid just $900 to PG&E, even though the household runs two EVs and two air conditioners. During a June–July heat wave with temps in the 95–110°F range, the family kept the house at a steady 74°F and only saw about a $75 increase in their True Up for that period; the three billing cycles before that had been negative. He also noticed Reddit threads of neighbors paying over $1,000 for the same stretch, which made the system’s performance feel even more significant. Reliability showed up twice this summer when grid outages occurred: notifications from PG&E and Enphase alerted him, and the system switched over so fast there was no interruption to devices. Earlier in the year the Enphase monitoring stopped reporting even though the solar kept producing; Enphase contacted Corda, Corda arranged a same-day technician visit, and the service call was free — a quick fix that Jeff found notable. He ran the numbers

2. M L.
Yelp | May 5, 2024 |

This homeowner hired Corda Solar for three separate jobs — a pool solar setup, a rooftop panel system, and battery backups — and kept coming back because each phase was handled reliably. They worked closely with Courtney, Gary and Nathan throughout the projects and found the communication and workmanship steady across every install. As a long-time client, they ended up with a string of successful systems and a clear takeaway: the same small team kept the projects smooth, which made Corda their go-to for anything solar.

3. Amy P.
Yelp | Jul 25, 2022 |

Amy P. hired Corda about a year and a half ago to install both a standard rooftop solar array and a separate pool-heating solar system. She found the pricing competitive and the work well done, and has continued to use Corda for pool-solar maintenance. Customer service became the highlight—Gary proved especially knowledgeable and reliably responsive: after she emailed a question one morning, he was at her house that afternoon to help. The lasting impression for her is the same-day, hands-on support that keeps the system running smoothly.

03

1. Becky K.
Yelp | Apr 23, 2025 |

Becky turned to Corda Solar for pool heating and came back for a second season because the whole process just worked. She found the team genuinely knowledgeable, efficient on site, courteous in person, and reasonably priced — customer service stood out above everything else. After two years with them she would rate the company higher than five stars, and she singled out Nathan for the hands-on help that kept her returning.

2. Nag J
Google | Sep 27, 2025 |

Nag recently arranged the installation of two Tesla Powerwall 3 units on a Danville home, and the whole project unfolded smoothly. They moved through a straightforward quoting process, and Corda Solar took charge of the tricky parts—coordinating with PG&E and handling the interconnection so cleanly there were no surprises. The install team itself earned praise: Sara, Michael, Jennifer, owner Nathan, and a super-capable crew stayed on top of every step with prompt email replies, thorough follow-up, and attentive post-install support. The detail that stood out most was how completely Corda removed the utility paperwork and logistics from the homeowner’s to-do list, leaving two Powerwall 3s in place and one responsive team to call if anything came up.

3. Gene D.
Yelp | Jul 28, 2024 |

Gene D. was living in the Tri‑Valley area and, after enduring six power outages and a monthly $400 electric bill, started looking seriously at solar with battery backup for his ranch‑style home. He narrowed the field to two local Yelp five‑star companies and settled on Corda because their proposal best matched his needs: 19 Hyundai solar panels paired with a Tesla Powerwall 3. Corda answered every question patiently for someone who knew nothing about solar, and their team handled the whole process — signed contract, installation, final inspection and PG&E hookup — in under a month. Crews showed up on time for every appointment, never missed a scheduled visit, and were willing to work with him on installation aesthetics so the system looked right on the roof. After 35 years working intermittently as a purchasing agent and dealing with many vendors, he judged Corda as organized and professional. What stuck with him most was their punctuality and attention to how the install looked, plus having a fully functioning system of 19 panels and a Powerwall 3 operational in less than a month.

Long-term Satisfaction

Long-term satisfaction for Corda 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.

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