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.
Fast, Reliable Solar Panel Installation Across San Leandro
If you live in San Leandro and your PG&E bill keeps climbing while your roof gets full afternoon sun, you’re probably wondering whether solar actually pencils out here. The short answer: yes, for most San Leandro homes it does, but the numbers depend heavily on where your house sits between the bay flats and the East Bay hills. A rooftop solar installation in the 94577 flatlands faces different fog patterns than one up in the 94578 hills, and a quote that ignores that distinction isn’t a quote you should trust. Gus’s Solar installs solar panel systems across San Leandro every week, and Gus Petrakis himself builds every estimate off your actual utility bill. Call (877) 550-6892 and we’ll come out, walk your roof, and show you the math without asking for a signature.
Why Gus’s Solar Is San Leandro’s Preferred Solar Panel Installation Company
We’ve been at this long enough that San Leandro homeowners recognize the truck. That matters in a city where a lot of the housing stock went up between 1945 and 1970, and where the difference between a clean install and a leaky roof ten years later comes down to who was actually on the ladder. Gus Petrakis puts his own name on the work, publishes his license number, and answers his own phone. When you call (877) 550-6892, a live person picks up, not a ticketing queue.
We work all three San Leandro ZIP codes, 94577, 94578, and 94579, and we know the neighborhoods. The ranch houses off Bancroft Avenue, the hillside streets above Estudillo, the older bungalows near Washington Manor. That local knowledge changes how we design systems. A south-facing roof on a hillside lot in 94579 produces differently than a west-facing roof down near the Marina. When you call us for a consult, the person who shows up knows San Leandro, not just solar.
Our reviews from San Leandro customers consistently mention the same things: we show up on time, we quote a price and hold it, and we don’t disappear after the permit clears. The 90-Day Done Right Promise is in writing on every job. If something’s not right, Gus comes back and makes it right. One call, that’s it.
Our Solar Panel Installation Services in San Leandro
Rooftop Solar Installation
Most San Leandro homes we work on are single-story ranch houses with composition shingle roofs, which is about as straightforward as rooftop solar gets. We handle the full install, from mounting hardware through panel placement, inverter wiring, and final inspection, and we also offer Solar Panel Cleaning in San Leandro to keep systems running at peak output. Because so many local roofs date from the 1950s and 60s, we pay extra attention to flashing and penetration sealing. A solar array should outlast the roof under it, and in San Leandro’s marine air, sloppy flashing rusts.

Solar System Design & Permitting
San Leandro building permits move at a different pace depending on which year your home was built and what’s already been changed. We handle the entire design and permitting process, including the dreaded 60-amp or 100-amp panel upgrade that a lot of these post-war tract homes need before the city will sign off. If your service panel is original to a 1955 bungalow, we’ll tell you on day one what that upgrade costs, not spring it on you after you’ve signed.

Solar Panel Replacement
If your existing system is underproducing, or a string of panels has aged out, we can handle our Solar Panel Maintenance & Monitoring in San Leandro to catch issues early, or replace individual panels or entire arrays. We see systems in San Leandro that were installed a decade ago by companies that no longer exist, and the homeowner is stuck with orphaned equipment. We’ll assess what’s salvageable and quote an honest replacement. We keep parts local, and we don’t make you wait six weeks for a truck from Nevada.

Roof-Mount & Tile Roof Solar
A handful of San Leandro homes, especially the older ones near Estudillo Avenue and up toward the hills, have tile roofs. Tile work is a different skill than shingle work, and if a crew doesn’t know how to walk a tile roof without cracking it, the install gets expensive fast. Gus’s own crew handles tile roof solar mounting in-house. We don’t subcontract it out to whoever’s available. That’s the whole point of having a name on the truck.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Leandro
We install and service equipment from Panasonic, Canadian Solar, and JinkoSolar, among others. For San Leandro homeowners we typically recommend panels that handle partial morning fog without giving up afternoon production, and we pair them with inverters sized for the actual array, not an upsized system you don’t need. If you’re adding battery backup later, we work with FranklinWH systems so your storage integrates cleanly with the panels from day one, and we also offer our EV Charger Installation in San Leandro for homes going fully electric. We stock common replacement parts locally, which means a failed microinverter in 94578 doesn’t mean a two-week wait.
Common Solar Panel Installation Problems We See in San Leandro Homes
- Undersized electrical panels on post-war homes. Most San Leandro houses built before 1970 still have the original 60-amp or 100-amp service panel. You can’t safely add a solar array and an EV charger on that load without an upgrade, and the cost should be in your proposal from the beginning, not discovered mid-permit.
- Marine-layer production loss on west-facing flats. Homes in 94577 near the bay regularly sit under fog until late morning from May through September. We see installers quote those roofs using sunny-inland production numbers, and the system underproduces for two decades. We calculate irradiance for your actual site, not a generic San Leandro average.
- Tile roof cracking from inexperienced crews. Hillside homes in 94579 and parts of 94578 often have tile roofs. A crew that doesn’t know how to work tile will crack tiles during the install and leave you with a leak you don’t notice until the first heavy rain. We walk tile roofs daily and replace any tile we damage, which is rare because we know how to walk them.
- Orphaned systems from defunct installers. We regularly get calls from San Leandro homeowners whose original installer went out of business. The panels are fine, but the monitoring portal is dead and nobody’s answering the service line. We take over those systems, re-establish monitoring, and bring the array back to full production.
Pricing for Solar Panel Installation in San Leandro, CA
A typical rooftop solar installation in San Leandro runs between $14,000 and $26,000 before the federal tax credit, depending on system size, roof condition, and whether you need a panel upgrade. Most San Leandro homes we quote land in the $17,000 to $22,000 range for a system that covers 90 to 110 percent of annual usage. Tile roof installs typically add $1,500 to $3,500 due to the extra labor and mounting hardware. If your home needs a service panel upgrade from 100-amp to 200-amp, budget an additional $2,500 to $4,000, and we’ll tell you that number on the first visit, not the fifth. Every estimate is built off your actual PG&E bill, not a brochure. Call (877) 550-6892 and Gus will walk you through the math. The estimate is free, and there’s no pressure to sign anything tonight. Take two weeks. Think about it. The price will be the same.
We Also Serve Cities Near San Leandro
Besides our work across San Leandro, we regularly install solar in Ashland, San Lorenzo, Cherryland, and Castro Valley. Each of those communities has its own housing stock and its own microclimate, and we treat them that way. If you’re in a neighboring city and want to know how our Solar Panel Installation process works for your specific roof, call us. If you’re in San Leandro proper, you can learn more about how we serve the area on our San Leandro page. We also handle Solar Battery Storage & Backup in San Leandro for homeowners who want power during PG&E outages, and we keep systems running with Solar Panel Cleaning in San Leandro so fog grime and bird droppings don’t eat into your production.
Serving San Leandro, CA - Our Local Coverage Area
We’re based in the San Leandro 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 - Solar Panel Installation in San Leandro
We can usually be at your San Leandro home within 24 to 48 hours for a free estimate. Call (877) 550-6892, talk to a live person, and we’ll pick a time that works. If you’re home during the day, Gus can often stop by same day when he’s already in San Leandro on another job.
Yes, we install solar across all of San Leandro, including 94577, 94578, and 94579. That covers the flats near the Marina, the central neighborhoods around Bancroft and Estudillo, and the hillside streets climbing toward Lake Chabot. We know the permit office, the roof types, and the fog patterns in each part of town.
For panels under 15 years old, repair usually makes more sense. A single microinverter replacement might run $400 to $800, while a full array replacement starts around $10,000. We’ll give you an honest read based on your system’s age and output. If you’re not sure, call (877) 550-6892 and we’ll look at it.
San Leandro pricing runs slightly lower than Oakland and slightly higher than Hayward, mostly due to permit fees and the panel upgrades these older homes need. A typical San Leandro system lands between $17,000 and $22,000 before tax credits. The bigger variable isn’t the city, it’s your roof orientation and whether your electrical panel can handle the load.
Every install comes with the manufacturer’s panel and inverter warranty, plus our 90-Day Done Right Promise. If something isn’t done right, Gus comes back and fixes it. After the first 90 days, we’re still the ones who answer the phone when you call, which matters more than any fine print.
Call Gus’s Solar for Solar Panel Installation in San Leandro, CA
If you’re ready to see real numbers for your San Leandro roof, call (877) 550-6892. Bring us a bill, and Gus will bring you the math. No pressure, no overnight deadlines, no signature tonight. Just an honest look at what solar would do for your home and your PG&E bill. We’ll answer the phone when you call, and Gus will be the one on your roof when the install happens.
Written by Gus Petrakis, Owner at Gus’s Solar, serving San Leandro and surrounding East Bay communities since 2011.






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