Free bill analysis - bring a power bill, get the production math for your actual roof, panel brands like Qcells and REC compared side by side
If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
Solar Services in Union City, CA
If you live in Union City and have been thinking about Solar Panel Installation - Union City, the straight answer is this: most homes here can cut their annual electricity cost by 55 to 75 percent with a properly sized system, and the job usually takes two to three days once permits clear. The catch in Union City is that most 1960s and 70s tract homes still run on original 100-amp panels, which means a service upgrade often has to happen first. We know that because we see it on nearly every quote we do in the 94587. Call (877) 550-6892 and Gus will walk you through what your house actually needs, not what a brochure says.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Why Union City Homeowners Choose Gus’s Solar
We’re the local option in the truest sense. Gus Petrakis puts his name on the truck, publishes his license number, and answers his own phone. When someone in the Decoto district or over by Alvarado calls with a question about their system, they get Gus, not a ticketing portal. That matters in a city where a lot of folks have already had a door-knocker quote them one number and then watched it change at the contract table. Our pricing does not work that way. Bring us a bill, we’ll bring you the math. The number you see is the number you pay, and you can take two weeks to think about it. The price will be the same.
We carry the L.O.C.A.L. values on every job: Local roots, On time, Community first, Accountable, Loyal. That means background-checked, uniformed crew members on your roof, not a subcontracted crew we’ve never met. It means a live person answers the phone 24/7. And it means the 90-Day Done Right Promise is in writing on every solar job we do in Union City. If it’s not right, one call brings Gus back.
Solar Services We Offer in Union City
Solar Panel Installation
Most Union City installations run between $14,000 and $26,000 before the federal tax credit, depending on system size, roof condition, and whether a panel upgrade is needed. We design for year-25 output, not day-one brochure numbers, and we quote the system that actually covers your usage. Learn more about our Solar Panel Installation in Union City.

Solar Battery Storage & Backup
With PG&E rates shifting and public safety power shutoffs becoming routine in the East Bay hills, battery backup has gone from luxury to practical for many Union City homeowners. We install FranklinWH, Tesla Powerwall, and Enphase battery systems sized to your actual overnight usage. Learn more about our Solar Battery Storage & Backup in Union City.

Solar Panel Cleaning
Union City sits in a dry, dusty corridor between the Bay and the Diablo Range, which means panels here collect grime faster than in fog-heavy areas to the north. A good cleaning two or three times a year keeps production where it should be. Learn more about our Solar Panel Cleaning in Union City.

EV Charger Installation
More Union City households are adding a second EV, which usually means EV Charger Installation - Union City and often a panel upgrade. We handle the wiring, permitting, and charger install in one visit, and we’ll tell you honestly if your existing panel can handle the load before we start.

Solar Panel Maintenance & Monitoring
Gus monitors the systems we install. When production dips, we call you, not the other way around. For systems installed by other companies, we offer our Solar Panel Cleaning in Union City and repair service across Alameda County, including full diagnostics on SolarEdge and Enphase equipment.

Solar Panel Repair
We repair inverter failures, damaged panels, roof flashing leaks, and monitoring issues. We offer $40 off any repair over $200 and a free second opinion on any written estimate you’ve received from another contractor. If a salesman needs an answer tonight, the answer is no. Come get a straight second look from us instead.

Commercial Solar Installation
Union City’s light industrial corridors along Whipple Road and Railroad Avenue have strong rooftop solar economics, especially with our Solar Battery Storage & Backup in Union City for demand charge management. We work with building owners and facility managers on straightforward, no-pressure proposals built from real interval data.

Neighborhoods We Serve in Union City
We work throughout Union City, and our typical response time for a service call or site visit is same-day or next-day for the 94587. These are the neighborhoods we’re in most often:
- Decoto
- Alvarado
- Seventh Street corridor
- Mission Boulevard area
- Union Landing / BART station area
Why Union City’s Climate & Housing Affect Solar
Union City sits in a microclimate transition zone. The Diablo Range foothills to the east block enough marine influence that summer morning fog burns off noticeably faster here than in Hayward to the north. That translates to more usable peak sun hours across the year, which is a genuine ROI advantage if you’re comparing production estimates against neighboring ZIP codes. One practical takeaway: west-facing rooftops on Bay-side streets still catch afternoon marine layer in June and July, so south- and southwest-facing arrays in Union City routinely outperform west-facing ones by 8 to 12 percent. We design around that reality when we lay out a system for your roof.
The housing stock tells its own story. The majority of single-family homes here are 1960s and 70s ranch-style tract construction on the flat western side of the city. Nearly all of them were built with 100-amp electrical service. That means before a solar-plus-storage permit can be approved, most homes need a service upgrade, sometimes to 200 amps, which adds $2,500 to $5,000 to the project. Ignore that fact and you get a system that trips breakers or a permit that stalls at inspection. We address it on the first site visit, in writing, so there are no surprises later.
Pricing for Solar in Union City
Here’s what we see on the ground in Union City, in honest ranges:
- Solar panel installation (5-8 kW system): $14,000-$26,000 before the federal tax credit
- Panel upgrade (100-amp to 200-amp): $2,500-$5,000, depending on the meter location and conduit run
- Battery storage (single home battery): $9,000-$15,000 installed, depending on brand and whether a critical-loads panel is included
- Solar panel cleaning: $150-$300 per visit for a typical single-story Union City home
- Solar repair (inverter replacement, panel swap, flashing leak): $350-$2,500, with the $40-off repair discount applied to qualifying jobs
We offer no trip charge inside Alameda County and a senior and veteran discount of 10 percent that never expires. Estimates are free, and the price quoted is the price charged. Bring me a bill, I’ll bring you the math.
Service Area - Cities Near Union City
Gus’s Solar serves Union City and the surrounding East Bay communities, including Newark, Fremont, Fairview, and Hayward. If you’re just over the city line, we’ll still quote the job and be there when we say we will. Home.
Serving Union City, CA - Our Local Coverage Area
We’re based in the Union City area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Solar in Union City
Most homes built in the 1960s and 70s in Union City still have 100-amp panels, and yes, you will almost certainly need a 200-amp upgrade before solar-plus-storage can be permitted. The upgrade adds $2,500 to $5,000 to the project and typically takes one day. We’ll tell you on the first site visit whether yours needs it, in writing, so the quote you get is the quote that holds.
A typical residential solar installation in Union City runs between $14,000 and $26,000 before the federal tax credit, with the final number depending on system size, roof condition, and whether a panel upgrade is needed. Battery storage adds $9,000 to $15,000. Call (877) 550-6892 for an exact quote based on your actual PG&E bill. Estimates are free.
That depends on the age of the system and what failed. An inverter replacement runs $1,500 to $3,000; a damaged panel swap is usually under $800; a full re-roof-plus-solar replacement can exceed $20,000. If your system is over 15 years old and production has dropped significantly, replacement often wins on cost per kilowatt-hour. We’ll give you the straight math on both options.
Yes. We maintain same-day and next-day response times for the 94587, and a live person answers the phone 24/7. Call (877) 550-6892 and Gus will send a crew member out as soon as we can get there, with no trip charge inside Alameda County.
They do. Union City actually gets more peak sun hours than Hayward to the north because the Diablo Range blocks some of the marine influence. West-facing roofs give up some production in June and July afternoons, but south- and southwest-facing arrays perform well year-round. We design for the orientation and microclimate of your specific street, not a regional average.
Get a Straight Answer From Gus
If you’re in Union City and want solar without the high-pressure pitch, call (877) 550-6892. Bring us your PG&E bill, and we’ll bring you the math: real production estimates, real pricing, and a written 90-Day Done Right Promise on every job. Take two weeks to think about it. The price will be the same. And if a salesman from another outfit needs an answer tonight, the answer is no. Call Gus instead.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Union City and the East Bay since 2011.
What happens when you call
- 1A real person answersNo phone trees - talk to a local solar pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What Union City Customers Say
"Gus's own crew did the install. Not a subcontractor who had never met him, which is what the big outfit quoted me and could not tell me who would actually be on my roof."
- Aurelia Santibanez"He modelled it on my actual bill and the current export rates rather than the old ones, and told me plainly that the payback was longer than the door knockers had claimed. Then it came in about where he said it would."
- Octavius Redmond"Production dropped one spring and I did not even notice. Gus rang me, because he watches the monitoring, and had it sorted the same week."
- Sunita Balakrishnan






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