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 Kirby
Commercial solar installation in Kirby typically runs $85,000 to $240,000 for a warehouse or industrial array, and the single biggest scheduling risk in this ZIP code is not the hardware. It is the permit. Kirby sits completely encircled by San Antonio, but it is its own municipality, which means commercial solar permits come through Kirby’s city hall, not San Antonio’s Development Services Department. Out-of-area contractors miss this step all the time. We do not, because we run this permit path several times a year. If you own a warehouse, shop, or light-industrial building in 78244, call (877) 550-6892 and we will walk you through the actual timeline, not a brochure version.
Why Gus’s Solar Is Kirby’s Preferred Commercial Solar Installation Company
Gus Petrakis founded this company in 2011, and his name is on every truck that rolls into Kirby. That is not a marketing line. It is how he has run the business for over 29 years in this region, with a published address, a state license, and a phone that a live person answers 24/7. When a Kirby warehouse owner calls at 6:30 a.m. because a storm knocked out an inverter, Gus picks up. Not a call center. Not a ticket. Gus.
Our commercial work in Kirby tends to come by referral. A building owner near the city limit gets our number from a neighbor off Binz-Engleman Road, or from a property manager over by the industrial lots east of Loop 410. We do not door-knock. We do not send a salesman who needs an answer tonight. We send Gus’s own crew, background-checked and uniformed, and we quote the year-25 output, not the day-one brochure number.
Kirby’s commercial roofs have taught us things. The mid-century construction patterns here, the proximity to JBSA-Fort Sam Houston, the specific inspection expectations at Kirby’s city hall. Experience matters when the inspector opens the conduit and checks the grounding. Ours passes, because we know what Kirby’s permit office actually looks for.
Our Commercial Solar Installation Services in Kirby
Commercial Rooftop Solar
Most Kirby commercial buildings along FM 78 and the surrounding industrial corridors have flat or low-slope roofs with plenty of square footage. A typical commercial rooftop array in Kirby runs $2.10 to $2.85 per watt installed, before any federal tax credit. We design for the actual roof, meaning we account for HVAC units, vent stacks, skylights, and the specific wind uplift and hail exposure this part of Bexar County sees. Our Commercial Solar Installation team handles the full scope, from engineering drawings to CPS Energy interconnection.

Warehouse & Industrial Solar
Warehouse solar in Kirby is usually a straightforward ROI story. Big roof, high daytime load, CPS Energy commercial rates that keep climbing. A 75 kW system on a Kirby warehouse generally lands between $140,000 and $210,000 depending on roof condition and electrical work. We have installed arrays on buildings just inside the Kirby city limit where the old 100-amp service had to be upgraded to 200-amp before CPS would even schedule the interconnection test. We build that upgrade into the quote. You will not find out about it at inspection.

Solar Carport Installation
Carport solar makes sense for Kirby businesses that want covered parking and generation in one structure. A commercial carport array with 30 to 80 panels typically runs $3.00 to $3.60 per watt in this market, higher than rooftop because of the steel structure and footings. Kirby’s soil conditions near the Salatrillo Creek drainage can require deeper piers, and we plan for that instead of pretending the ground is the same as a parking lot in San Antonio proper.

Commercial Battery Storage
Battery storage is the piece we tell Kirby business owners to think hardest about. CPS Energy’s commercial rates include demand charges, and a battery system sized to shave peak demand often pays for itself faster than the solar array does. We install FranklinWH, Tesla Powerpack, and Enphase battery systems sized to your building’s actual load curve. A commercial battery bank in Kirby typically starts around $25,000 and can run past $90,000 for larger facilities. The math comes off your actual utility bill, not a generic estimate.

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.
Trusted Brands We Service in Kirby
We install and service equipment from the brands that hold up in south-central Texas heat and hail: Tesla, Enphase, SolarEdge, FranklinWH, and others. For Kirby commercial customers, that means we carry local stock of common replacement parts, and our service techs know these systems well enough to diagnose an inverter fault without a week of back-and-forth with a manufacturer’s help desk. When a monitored Tesla Powerpack throws a code at a Kirby warehouse, we see the alert and call you. Not the other way around.
Common Commercial Solar Installation Problems We See in Kirby
- Wrong permit authority. A contractor files with San Antonio Development Services. Kirby’s city hall has no record. The job sits. We pull through Kirby’s municipal permit office every time, and we handle the CPS Energy interconnection on the parallel track.
- 100-amp service surprises. Many Kirby commercial buildings from the 1960s and 1970s still run original 100-amp panels. A solar system cannot interconnect on that. The upgrade to 200-amp is a real cost, often $3,000 to $6,000 on a commercial service, and it belongs in the quote from day one.
- Standard glass instead of Class 4 hail-rated panels. Kirby sits inside Texas hail alley. Specifying standard panels to shave the bid saves nothing when a spring hailstorm cracks twenty modules. We quote Class 4 impact-rated panels as standard on Kirby commercial roofs.
- Flat roof penetrations done wrong. Commercial flat roofs in this climate expand and contract hard between July afternoons and January nights. A cheap flashing job leaks within three years. Gus’s crew flashes every penetration as if their own name is on the leak liability. It is.
Pricing for Commercial Solar Installation in Kirby, TX
Here are honest numbers for the Kirby market, based on jobs we have quoted and installed in 78244:
- Small commercial rooftop array (15-30 kW): $32,000-$78,000
- Warehouse/industrial rooftop (40-100 kW): $85,000-$240,000
- Commercial carport array: $3.00-$3.60 per watt
- Commercial battery storage: $25,000-$90,000+ depending on capacity
- 100-amp to 200-amp panel upgrade: $3,000-$6,000 if your building needs it
The federal solar investment tax credit applies to most commercial systems, and accelerated depreciation under MACRS changes the effective cost substantially. Bring me a bill, I’ll bring you the math. Take two weeks. Think about it. The price will be the same. Call (877) 550-6892 for a free commercial estimate in Kirby, and we will work the numbers off your actual CPS Energy usage history.
We Also Serve Cities Near Kirby
Our commercial crews work throughout the northeast San Antonio metro, so if your building is in Kirby or just over the line in Windcrest, Converse, Live Oak, or Universal City, the same crew and the same permit experience apply. Kirby’s municipal permit process is unique, but the surrounding towns each have their own quirks too, and we have pulled permits in all of them.
Serving Kirby, TX - Our Local Coverage Area
We’re based in the Kirby 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 Kirby
Kirby requires its own permit, issued through Kirby’s city hall. San Antonio’s Development Services Department has no authority here. You file the building and electrical permit with Kirby, then handle interconnection separately through CPS Energy. Contractors who file the wrong permit lose weeks. We file both tracks correctly the first time. Call (877) 550-6892 and we will explain the exact sequence for your building.
No. A 100-amp service cannot safely accept a commercial solar interconnection, and CPS Energy will not approve the system until the panel is upgraded to 200-amp. Many Kirby warehouses built in the 1960s and 1970s still have original 100-amp gear. Budget $3,000 to $6,000 for the upgrade, and get it quoted up front, not discovered at inspection.
Yes. Kirby sits in Texas hail alley, and commercial roofs take direct hits. Class 4 impact-rated panels are built to survive the hailstones that crack standard glass modules. Insurance carriers increasingly ask about panel rating when underwriting commercial properties in Bexar County. We quote Class 4 as standard on Kirby commercial projects, not as an upsell.
Kirby’s electric grid is served by CPS Energy, so commercial net metering and buyback rates follow CPS Energy’s current commercial tariff, not a separate Kirby utility. Your system exports to the CPS grid, and your bill reflects the credit rate in effect for your rate class. We design systems around your actual demand profile so you consume as much of your generation on-site as possible. Call (877) 550-6892 for a free bill analysis.
Yes. Flat commercial roofs are actually easier for solar in some ways than steep residential pitches. We design around every HVAC unit, vent, and skylight, and we use a ballasted or mechanically attached racking system appropriate for your roof membrane and wind zone. On a recent Kirby warehouse near the city limit, we worked around fourteen rooftop HVAC units and a full piping run to fit a 75 kW array that never lost a panel to shading. Bring us a roof plan or just let us survey it. The first visit is free.
Call Gus’s Solar for Commercial Solar in Kirby
If you own a commercial building in Kirby, you have probably already had a salesman tell you the decision is urgent. It is not. If a salesman needs an answer tonight, the answer is no. We quote the year-25 output, not the day-one brochure number. We pull Kirby’s permit from Kirby’s city hall. We upgrade your panel if you need it, tell you if you do not, and install Class 4 panels because the hail will come. One call to (877) 550-6892 gets you a live person and a free commercial estimate for your Kirby property. Take two weeks. The price will be the same.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Kirby and the surrounding communities.






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