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Fast, Reliable Commercial Solar Installation Across Florence-Graham
Commercial solar installation in Florence-Graham runs about $2.40 to $3.10 per watt before incentives, and most warehouse and retail projects in the 90001 ZIP land between $28,000 and $210,000 depending on roof size and panel count. Our Commercial Solar Installation team works this neighborhood regularly, which matters more than you’d think given how Florence-Graham’s unincorporated status changes the permit path and the utility math. If you own a shop, a warehouse, or an apartment building between Alameda Street and Compton Avenue, call (877) 550-6892 and Gus will walk your roof himself before quoting a single number.
Why Gus’s Solar Is Florence-Graham’s Commercial Solar Installation Choice
Florence-Graham sits in a strange pocket. It’s unincorporated LA County, which means Southern California Edison handles the power and LA County DRP handles every permit. Blocks away in Huntington Park, it’s a different utility and a different building department. A local outfit that’s pulled permits at 6356 Pacific Boulevard or the industrial strips off Firestone Boulevard knows which counter to hit and which forms SCE actually wants for their interconnection queue. That’s the difference between a six-week install and a four-month stall.
Gus Petrakis founded this company in 2011 and still answers his own phone. When a Florence-Graham business owner calls, they get Gus or one of his crew, not a call center. Reviews from commercial customers along Alameda Street and near Augustus F. Hawkins Natural Park mention the same thing: the quote matched the invoice, the crew showed up when promised, and when a follow-up question came up six months later, someone picked up on the second ring. That’s how a local solar contractor should operate here.
Response time to Florence-Graham is typically same-week for site visits. Emergency service calls, like a faulted inverter or storm damage on a commercial array, get a same-day visit when you call before noon. No subcontracted labor, no third-party installer you’ll never see again. Gus’s own uniformed crew does the work, and the truck that pulls up has his name on the side.
Our Commercial Solar Installation Services in Florence-Graham
Commercial Rooftop Solar
Most commercial roofs in Florence-Graham are flat or low-slope over older masonry and tilt-up construction, which means ballasted racking and careful penetration sealing matter more than they do on sloped residential roofs. We design these systems to carry the production load through the summer heat while keeping the roof warranty intact. A 50 kW system on a retail or storage building here typically runs $115,000 to $155,000 before the federal tax credit.

Warehouse & Industrial Solar
The warehouse corridors along Alameda Street and the rail-adjacent industrial lots near Slauson Avenue have large, unobstructed roof planes that make them ideal for high-output arrays. We’ve built 100 kW+ systems in this zone that offset 60 to 75 percent of annual usage. Because SCE’s time-of-use rates for commercial accounts peak in the late afternoon, these systems earn their keep during exactly the hours Florence-Graham warehouses run their refrigeration and loading equipment hardest.

Solar Carport Installation
When roof space is tight or shaded, a solar carport over an existing parking area turns dead asphalt into generation. Several Florence-Graham businesses along Firestone and Compton Avenue have opted for carports because their 1950s-era roofs couldn’t take the structural load. Carport systems here run $4.00 to $5.50 per watt installed, and they add covered parking for employees and customers as a side benefit.

Commercial Battery Storage
Florence-Graham businesses lose power more often than they should, usually from heat-wave strain on aging SCE distribution lines. A FranklinWH or Tesla commercial battery paired with your array keeps refrigeration, security, and POS systems running through outages and clips your demand charges during peak-rate windows, which is why we offer Solar Battery Storage & Backup in Florence-Graham. Most commercial battery retrofits in this area run $18,000 to $65,000 before incentives depending on capacity. We install and service the same brands we’d put on our own shop.

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.
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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 Florence-Graham
We install and maintain commercial systems built on Enphase microinverters, SolarEdge string inverters with power optimizers, and Tesla or FranklinWH battery platforms. Because our shop is close enough to keep stock on hand, a failed inverter on an Alameda Street warehouse doesn’t wait two weeks on a freight truck from Texas. We keep common replacement parts for these brands in our local inventory, which means faster turnaround for Florence-Graham commercial accounts and less downtime on your generation.
Common Commercial Solar Installation Problems We See in Florence-Graham
- Aged electrical panels on 1940s and 1950s commercial buildings. Many Florence-Graham storefronts still run original 100-amp or 200-amp services that won’t pass SCE interconnection review without an upgrade. We flag this on the first site visit, not after the contract is signed.
- Roof penetrations from old HVAC and antenna work. Flat commercial roofs in this area have often been patched multiple times. We inspect the entire mounting zone before we quote, because a leaking roof under a new array is a warranty fight nobody wants.
- Missed DAC and SCE interconnection timelines. Contractors who don’t regularly work SCE’s Southeast LA service area underquote project timelines. We’ve taken over jobs where a business owner was promised a six-week completion and sat four months waiting on paperwork that was never filed correctly.
- Undersized systems from copy-paste quotes. A national outfit will sell the same 25 kW package to a shop on Firestone and a warehouse on Alameda. Your actual bill tells a different story, and Gus reads that bill line by line before recommending a single panel.
Pricing for Commercial Solar Installation in Florence-Graham, CA
Commercial rooftop solar in Florence-Graham runs $2.40 to $3.10 per watt installed before incentives. A small storefront system of 10 kW lands around $24,000 to $31,000. A mid-size warehouse array of 50 kW. runs $115,000 to $155,000. Larger industrial systems of 100 kW or more start at $215,000 and go up with panel count and battery integration. What moves the number: roof condition and structural reinforcing, main panel upgrade if your existing service is undersized, and whether you add battery storage. The federal Investment Tax Credit currently covers 30 percent of the installed cost for commercial systems, and Florence-Graham’s DAC status opens additional state and SCE low-income program incentives for qualifying owners. Call (877) 550-6892 for a free estimate, and bring your actual SCE bill. Gus quotes the year-25 output, not the day-one brochure number.
We Also Serve Cities Near Florence-Graham
Our commercial solar crews cover Florence-Graham and the surrounding Southeast LA communities, including Huntington Park, Walnut Park, Willowbrook, and South Gate. If your business sits near the city line on Alameda Street or Slauson Avenue, you’re still in our service area. For smaller rooftop work, see Solar Panel Installation in Florence-Graham, and for backup power, see Solar Battery Storage & Backup in Florence-Graham. This is home turf. Florence-Graham business owners get a local crew, not a subcontractor from another county.
Serving Florence-Graham, CA - Our Local Coverage Area
We’re based in the Florence-Graham 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 Florence-Graham
Site visits happen within a week, and after you sign, we file permits with LA County DRP and your SCE interconnection application within three business days. Actual install timing depends on SCE’s queue, which for commercial projects in the 90001 ZIP typically runs 8 to 14 weeks from application to approval. We tell you the honest timeline up front, not the timeline a salesman thinks you want to hear. If a salesman needs an answer tonight, the answer is no. Call (877) 550-6892 and we’ll walk you through your specific schedule.
Yes. We work the commercial strips along Alameda Street, Firestone Boulevard, Compton Avenue, and the industrial pockets near Slauson Avenue and the rail lines. If your business address is in 90001, you’re in our service area. We also handle nearby Huntington Park, Walnut Park, Willowbrook, and South Gate for commercial projects that straddle city lines.
If your commercial system faults and you need it looked at, same-day visits are available when you call before noon, including Solar Panel Cleaning in Florence-Graham and other maintenance needs. Diagnostic visits inside our service area carry no trip charge, and if the fix is simple, it’s often handled the same visit for a flat repair rate rather than an open-ended hourly billing. We also offer a $40 credit on any repair over $200 for Florence-Graham commercial accounts. For a genuinely dangerous situation like a faulting battery, disconnect the system and call us immediately; we’ll talk you through safe shutdown steps over the phone.
No. Our per-watt pricing is the same across our entire Southeast LA service area. What changes between cities is the permit path and utility timeline, not our labor rates. Florence-Graham’s LA County DRP permits and SCE interconnection process sometimes add a few weeks compared to incorporated cities with their own building departments, but the installed cost per watt stays flat. Bring us a bill, Gus will bring you the math.
Every commercial system we install carries the manufacturer’s equipment warranty plus our own 90-Day Done Right Promise in writing: if it’s not right, Gus makes it right, and one call brings him back. Panels carry 25-year output warranties from the manufacturer. Our installation workmanship is covered by our own warranty, and because we’re a local shop with a published address and a live person answering 24/7, you’ll never have to chase a warranty claim through a corporate portal. Call (877) 550-6892 for the exact warranty terms on your project.
Ready for a Straight Answer on Commercial Solar in Florence-Graham?
Bring us your SCE bill and we’ll quote the real numbers: year-25 output, honest timelines, and a price that won’t change when the salesman leaves your parking lot. Senior and veteran commercial owners get a 10 percent discount that never expires. Free second opinions on any written estimate, free site visits in our service area, and no pressure to sign tonight. Take two weeks. Think about it. The price will be the same. Call (877) 550-6892 and ask for Gus.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Florence-Graham and Southeast Los Angeles with honest solar work since 2011.






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