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 Commercial Solar Installation Across El Granada
Commercial solar in El Granada comes with a permitting layer most Bay Area installers never see coming. If your building sits anywhere in the 94018 zip code, you’re inside California’s Coastal Zone, which means San Mateo County can require a Coastal Development Permit before a single panel goes up. Skip that determination letter and your project can stall for months. Gus Petrakis has been navigating this exact process for commercial property owners along the San Mateo coast since 2011, and we quote your system off real irradiance data from your actual site, not a generic California average that overpromises by double digits. Call (877) 550-6892 and we’ll walk the roof with you before we put anything in writing.
Why Gus’s Solar Is El Granada’s Preferred Commercial Solar Installation Company
We’re the local shop that shows up with a published address, a license number, and an owner whose name is on the truck. Gus Petrakis still answers his own phone, and every commercial job gets his 90-Day Done Right Promise in writing: if it’s not right, he comes back and makes it right. No ticket queue and no call center three states away.
Our crew knows El Granada’s building stock because we’ve worked on it. The warehouses off Avenue Alhambra, the retail strips along Highway 1, the older ranch-style commercial buildings that date to the 1960s and 1970s. We know which roofs need a structural check before racking goes on, and we know how the salt air eats at standard aluminum hardware. That’s why we spec marine-rated components on every coastal job. It’s not an upsell. It’s what keeps your system producing past year ten.
When you call Gus’s Solar for Commercial Solar Installation, you get background-checked, uniformed technicians who work for Gus directly. No subs. No pop-up crew that vanishes after the paperwork clears. And when we say we’ll be there, we’re there. El Granada is our backyard, not a sales territory.
Our Commercial Solar Installation Services in El Granada
Commercial Rooftop Solar
A commercial rooftop system in El Granada has to fight the marine layer, not just the utility bill. We model your production using site-specific irradiance data from your actual address in 94018, because the fog that sits over this stretch of coast until early afternoon cuts peak sun hours well below what a default solar calculator assumes. That means we size your array honestly. You don’t overbuy panels you’ll never pay off, and you don’t underbuy and end up with a system that misses your offset target. Before quoting a single number, we pull a Coastal Development Permit determination letter from San Mateo County Planning. Skipping that step has stalled projects for months when the County later decides a CDP was required.

Warehouse & Industrial Solar
Warehouse roofs in El Granada tend to be shallow-pitch, built decades ago, and often still wearing their original composition or wood-shake roofing. On a warehouse off Avenue Alhambra, our crew found the original 1970s composition roof was too brittle for racking, so we replaced the roof section before mounting REC panels with Enphase microinverters. The marine layer meant our production estimate had to use site-specific irradiance data, not the generic California numbers that overpromised by 18%. That’s the difference between a system that hits its payback and one that limps along for 25 years disappointing the owner. We check the roof first, then we talk numbers.

Solar Carport Installation
Carport solar makes sense for El Granada commercial properties with limited south-facing roof area, which is most of them. The shallow-pitch 1960s and 1970s construction that dominates this community doesn’t always give panels the tilt they want. A carport structure lets us set the azimuth and angle properly, and it keeps your parking lot usable while adding covered parking. The same Coastal Zone rules apply, so we handle the permit determination up front. And because the salt air here doesn’t care whether a panel is on a roof or a carport, we use marine-rated connectors and coated racking on every structure we put up within sight of the ocean.

Commercial Battery Storage
Battery storage on the coastside is a different math problem than inland. With the marine layer suppressing solar production, the question isn’t just “can I charge a battery” but “will it actually pay back.” We answer that honestly using your real usage and real production numbers. For many El Granada commercial owners, a FranklinWH or similar battery system combined with time-of-use arbitrage pencils out even with lower solar production, because PG&E rates on the coast don’t get any gentler. We’ll show you the year-25 output number, not the day-one brochure figure. Bring us a bill, we’ll bring you the math.

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 El Granada
We work with equipment that holds up in salt air, which is why we lean on brands like Panasonic, Canadian Solar, and FranklinWH for coastal commercial projects. These manufacturers build inverters, panels, and battery enclosures that resist the corrosion El Granada’s onshore breeze delivers year-round. We stock common replacement parts locally so commercial customers aren’t waiting on a truck from a warehouse in Nevada when a connector fails or an inverter throws a ground fault. If we can’t fix it same week, we’ll tell you when we can. Straight answer, every time.
Common Commercial Solar Installation Problems We See in El Granada Homes
- Corroded racking and inverter enclosures. Salt-laden air off the Pacific attacks standard aluminum racking and inverter housings years faster than it does inland, leading to ground faults and premature inverter failure. We spec marine-grade coatings and stainless fasteners on every coastal commercial job.
- Shallow-pitch roofs limiting panel tilt. The 1960s and 1970s commercial stock in El Granada was built with low-slope roofs, which means panels often sit flatter than optimal. A poorly chosen azimuth can shrink your kWh offset below the payback target your lender approved.
- Coastal Development Permit surprises. A commercial rooftop project inside the Coastal Zone can trigger a CDP requirement that inland installers never think to check. We pull the determination letter from San Mateo County before quoting, so the permit doesn’t show up halfway through the project.
- Brittle original roofing under the racking. Many El Granada commercial buildings still have their original composition or wood-shake roofing from the 1970s. Mounting racking on a roof that’s past its service life means leaks and structural headaches later. We inspect first and tell you straight if the roof needs replacing before panels go on.
Pricing for Commercial Solar Installation in El Granada, CA
A typical commercial rooftop solar installation in El Granada runs $2.80 to $3.50 per watt before incentives, which puts a 50 kW system at roughly $140,000 to $175,000. Warehouse and industrial projects with structural reinforcement or roof replacement run higher, often $3.25 to $4.00 per watt. Commercial battery storage adds $800 to $1,200 per kWh of storage capacity, so a 60 kWh FranklinWH system lands between $48,000 and $72,000. The Coastal Zone permitting layer adds a few hundred to a few thousand depending on whether a full CDP is triggered. We quote the price and it’s the price. No signature wanted tonight. Take two weeks. Think about it. The price will be the same. Call (877) 550-6892 for a free estimate built off your actual utility bill.
We Also Serve Cities Near El Granada
Gus’s Solar handles commercial projects throughout the San Mateo coastside and the upper Peninsula, including Half Moon Bay, Hillsborough, Millbrae, and Burlingame. If your property sits anywhere near El Granada, we’ll come out, walk the site, and give you the same straight numbers we give our 94018 customers. One crew, one owner, one standard of work.
Serving El Granada, CA - Our Local Coverage Area
We’re based in the El Granada 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 - Commercial Solar Installation in El Granada
Not always, but you need a determination letter from San Mateo County Planning before you start, because El Granada sits inside California’s Coastal Zone under Coastal Commission jurisdiction. A rooftop system that doesn’t add height or change the building footprint may be exempt, but the County decides that in writing, not your contractor’s verbal assurance. Our crew pulls this letter before quoting any commercial job in 94018. Call (877) 550-6892 and we’ll handle the determination for you.
El Granada receives roughly 15 to 20% fewer annual peak sun hours than Redwood City, which sits 10 to 15 miles inland over Highway 92 and burns off fog far earlier in the day. The marine layer here often hangs until early afternoon even in summer, and that gap must be modeled with site-specific irradiance data rather than default California averages. We’ve seen generic solar calculators overpromise production by 18% on coastside commercial roofs. If a salesman shows you a number, ask what irradiance data he used. If he can’t answer, that’s your answer.
The biggest issue is brittle original roofing that can’t support racking attachments, especially the composition and wood-shake roofs common on El Granada’s 1960s and 1970s commercial stock. Shallow-pitch construction also limits optimal panel tilt and south-facing area, which affects system output. We inspect the roof structure and membrane before quoting, and if replacement is needed, we tell you before you spend a dollar on panels. On the Avenue Alhambra warehouse job, we replaced the roof section first, then mounted the system. That’s the order it has to go in.
You can, but you’ll replace it years earlier than you should. Salt-laden onshore air corrodes standard aluminum racking and inverter enclosures at a rate inland installers rarely see, leading to ground faults and premature inverter failure within a decade. We spec marine-rated coatings, stainless hardware, and corrosion-resistant enclosures on every El Granada commercial job. It costs a little more up front and saves a lot later. That’s the trade, and we’ll show you the numbers both ways.
It depends on your rate schedule and usage pattern, but many El Granada commercial owners find that a battery paired with time-of-use arbitrage still pencils out, even with the marine layer cutting production by 15 to 20%. The battery charges during cheap off-peak hours and discharges when PG&E rates spike in the late afternoon and evening. We’ll run your actual bill through the model and show you the payback honestly. If the numbers don’t work, we’ll tell you that too. Call (877) 550-6892 and bring us a bill.
Call Gus’s Solar for Commercial Solar in El Granada
If you own a commercial property in El Granada and you’re tired of out-of-state installers quoting brochure numbers and vanishing after the paperwork, call Gus Petrakis at (877) 550-6892. We’ll walk your roof, check your Coastal Zone status, model your actual production, and hand you a written quote you can think about for two weeks. The price won’t change. Gus’s name is on the work, and that’s been the standard since 2011. If a salesman needs an answer tonight, the answer is no.
Written by Gus Petrakis, Owner at Gus’s Solar, serving El Granada and the San Mateo coast since 2011.






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