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 Decatur
Commercial solar installation in Decatur runs about $2.10 to $2.85 per watt installed, which puts most warehouse and agricultural systems between $85,000 and $400,000 before federal tax credits and USDA REAP grants. We typically complete design-to-energization in 8 to 14 weeks depending on Wise Electric Cooperative’s interconnection queue. Call (877) 550-6892 and Gus will walk your actual utility bill line by line before quoting a single number.
We know Decatur because we work here. The crews drive US-287 from the Dallas-Fort Worth metro office, not from a call center in another state. When a 40 kW array on a metal warehouse off Farm Road 730 trips offline at 2 p.m. in July, someone who knows the building answers the phone. Day or night.
Why Gus’s Solar Is Decatur’s Preferred Commercial Solar Installation Company
Gus Petrakis founded Gus’s Solar in 2011 and put his own name on the truck. That is not a marketing line. It is the whole operating model. When a Decatur business owner calls, Gus answers. When a system underperforms, he is the one who calls you first, usually before you notice the production dip on your monitoring app.
Our 90-Day Done Right Promise applies to every commercial job in Decatur. If something is not right, Gus makes it right, in writing, before the final invoice. That promise has real weight in Wise County, where word travels fast and a bad install would follow us through every feed store and county commission meeting for years.
For 29 years across our broader North Texas service footprint, the team has worked with commercial clients who were burned by door-knockers and out-of-state outfits that quoted one number and invoiced another. Decatur business owners tend to be skeptical of solar sales pitches. We like that. Bring us a bill, we will bring you the math. Take two weeks. The price will be the same.
Commercial Solar Installation Services in Decatur
Every commercial system in Decatur starts with the same question: what does Wise Electric Cooperative actually credit you for excess generation? That answer shapes everything downstream. Here is how we approach the work.
Commercial Rooftop Solar
Most Decatur commercial rooftops are standing-seam metal on warehouses or modified bitumen on older retail buildings. Both are solid solar hosts when flashed correctly. Our Commercial Solar Installation team sizes rooftop arrays to the co-op’s cap, not to wishful thinking. A 50 kW rooftop system on a metal building near the Decatur Municipal Airport typically starts around $105,000 before incentives.

Warehouse & Industrial Solar
We do a lot of warehouse work along US-287 and the industrial pockets near the BNSF rail corridor. These buildings often have the square footage for meaningful offset but the roof loads and electrical service need verification first. Gus’s crew handles the structural review and the interconnection paperwork. No subs. No handoffs.

Solar Carport Installation
Carports make sense for Decatur businesses with limited roof space or roof warranties they do not want disturbed. A 100 kW carport over a fleet parking area outside the city core runs $250,000 to $310,000 installed, depending on steel and site prep. We use the same racking brands we trust on rooftops and ground mounts.

Commercial Battery Storage
This is the service that matters most in Wise Electric Cooperative territory. When net metering credits are capped below what a Fort Worth business would get from Oncor, a battery changes the payback math. A FranklinWH or Tesla commercial battery paired with your array lets you store midday production and use it during the co-op’s peak demand window. Typical commercial battery installations in Decatur run $60,000 to $180,000 depending on capacity and chemistry.

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 Decatur
We work with equipment we would put on our own building. That list includes Tesla and Enphase for inverters and batteries, plus SolarEdge where the site calls for it. We stock common replacement parts in our DFW metro warehouse and can usually have a failed component swapped within 48 hours rather than the two-week wait some out-of-state installers quote. For Decatur businesses, that speed matters when a July heat wave is pushing demand charges through the roof.
Common Commercial Solar Installation Problems We See in Decatur
- Co-op interconnection rejections. A proposed array exceeds the feeder’s rapid shutdown capacity and Wise Electric Cooperative sends it back for redesign. We have walked enough Decatur applications through the co-op to size systems right the first time, usually with battery storage or panel layout adjustments baked in from day one.
- Hail damage on unrated panels. Decatur sits in North Texas hail country. We have seen rooftop arrays on older metal warehouses where the installed panels carried no meaningful IEC 61215 impact class for this region’s hail. Those panels now sit cracked and under-producing. We spec impact-rated panels for every Decatur roof.
- Overheated inverters in old attics. Mid-century commercial buildings in Decatur often have no ventilation plan for power electronics. An inverter mounted in an attic or on a west-facing wall cooks through capacitors and trips offline during peak production hours, quietly destroying the payback period. We relocate and ventilate.
- True-up statement surprises. A business owner expects a big offset and the co-op’s true-up shows a different number because the system was sized against Fort Worth math. In Decatur, the co-op’s net metering cap dictates system size. We quote the year-25 output, not the day-one brochure number.
Pricing for Commercial Solar Installation in Decatur, TX
Here are honest ranges for Decatur’s commercial market, based on recent jobs:
- Small commercial rooftop (25-50 kW): $52,000 to $115,000 before incentives
- Warehouse or industrial (50-150 kW): $105,000 to $340,000 before incentives
- Solar carport (50-200 kW): $140,000 to $600,000 depending on steel and site work
- Commercial battery storage (30-100 kWh): $60,000 to $180,000
- Agricultural ground-mount (40-100 kW): $90,000 to $260,000 before USDA REAP grant assistance
The two biggest cost drivers in Decatur are the co-op interconnection requirements and the hail/heat hardware selections we refuse to compromise on. A system spec’d for Fort Worth pricing math will either get rejected at interconnection or fail early in Wise County weather. Our estimate is free and the number we quote is the number you pay. Call (877) 550-6892 for a line-item proposal built from your actual usage data.
We Also Serve Cities Near Decatur
Our crews cover Briar, Azle, Eagle Mountain, and Lantana with the same response standards we bring to Decatur. If your business sits in one of those communities, the co-op rules may differ, so we verify your utility and interconnection terms before quoting anything.
Serving Decatur, TX - Our Local Coverage Area
We’re based in the Decatur 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 Decatur
Wise Electric Cooperative caps net metering credits lower than Oncor’s DFW territory, which means excess generation is credited at a reduced rate rather than full retail. That changes the payback math significantly. A system sized to offset 100% of your annual usage may only recover 70 to 80% of its value from exported power, so pairing the array with commercial battery storage and shifting loads to midday makes the return pencil out. We size every Decatur system to the co-op’s specific interconnection rules, not the payback math used in Fort Worth. Call (877) 550-6892 and we will run your actual bill through the Wise Electric Cooperative rate schedule.
Many of the older commercial buildings around the courthouse square and along Main Street were built decades before rooftop solar was a consideration. A structural assessment tells us if your roof can carry the added dead load and wind uplift. We have seen older modified bitumen roofs that needed localized reinforcement at attachment points, adding 5 to 10% to the project cost. If reinforcement is not practical, a ground-mount on your lot or a carport array often makes more sense. Gus’s crew handles the assessment as part of the free estimate.
Yes, when the racking is clamped to the standing seams rather than penetrating the roof. That approach preserves the roof warranty and is the standard method we use on Decatur’s many metal warehouse buildings. For corrugated metal roofs, we use a different attachment system that requires flashing every penetration properly. The key is matching the racking to the roof profile and the hail load. We will verify your roof profile before recommending racking.
In Decatur, a ground-mount array facing due south at a 25 to 30 degree tilt captures the most annual production. But if you run a business with afternoon-heavy loads, a southwest azimuth shifts production into the late afternoon when demand charges and Wise Electric Cooperative’s peak pricing hit hardest. Those large rural lots along US-287 give us room to design for your operating hours, not just the theoretical maximum. We model your interval data and match the array orientation to it.
You size the system to offset the portion of your bill with the highest per-kilowatt-hour cost, not the full bill. In Decatur, that usually means covering your daytime usage plus enough battery capacity to shave the co-op’s peak demand charge. A partial-offset array paired with storage often delivers better returns than a larger roof-only system because it attacks the most expensive line items on your bill first. We will show you the math on both scenarios before you spend a dollar. Call (877) 550-6892 for a free assessment.
Contact Gus’s Solar for Commercial Solar in Decatur
If you own a warehouse, a retail building, or a working farm anywhere in Decatur or the 76234 ZIP code, call (877) 550-6892 and ask for Gus. He will answer. Bring him a bill, he will bring you the math, and then he will tell you to take two weeks before you sign anything. The price will be the same. Senior and veteran discounts stack on commercial jobs, and the 90-Day Done Right Promise applies to every panel, battery, and wire we install.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Decatur, TX since 2011.






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