Cummins RS17A
Air-cooled · Natural Gas / LP Vapor
Denton County · Texas
Generator installation in Flower Mound
Cummins home standby generators sold at published equipment pricing and installed in Flower Mound by our own licensed electricians. We pull the permits, meet the inspector, and commission the unit under load before we leave.
Flower Mound generator installation at a glance
| County | Denton County |
|---|---|
| Electric delivery | CoServ or Oncor, depending on the address |
| Natural gas | Atmos Energy or CoServ, depending on the address |
| Installed by | Clements Electric, Grand Prairie |
| Permit required | Yes — we pull it |
| Typical 20kW installed | $13,500 – $17,000 |
| Site survey | Free, no obligation |
Why Flower Mound homes need standby power
Texas homes lose power for reasons that have nothing to do with how new the neighborhood is. Spring and early summer bring severe thunderstorms and straight-line winds that take down distribution lines. Winter brings ice loading, which is what put much of the state in the dark in February 2021 and again during Winter Storm Fern in January 2026. And summer brings peak demand on a grid that has repeatedly asked Texans to conserve.
What makes an outage genuinely serious here is air conditioning. A summer outage in Flower Mound is not an inconvenience, it is a habitability problem within hours, and it is the reason sizing a generator in Texas starts with your AC tonnage rather than your square footage.
Subdivisions we work in around Flower Mound
- Bridlewood
- Wellington
- Tour 18
That list is where the work actually is, not an exhaustive boundary — we install anywhere in Flower Mound and across Denton County. It is worth naming because lot layout matters more than most homeowners expect, though not for the reason people assume. What fixes the generator’s position is the manufacturer’s listed clearance from windows, doors and combustibles, plus the fuel gas and electrical codes. That distance then drives the gas run and the electrical run, which are the two biggest variables in your installation price.
Two things vary by subdivision rather than by city. Newer developments tend to have the gas meter and the panel on the same elevation, which shortens both runs; older ones frequently do not. And an HOA with an architectural committee adds a submission step — not a veto, because Texas Property Code § 202.019 bars an association from prohibiting a standby generator, but a step worth starting early.
Permits and inspection in Flower Mound
Permits in Flower Mound go through Building Inspections Division, 2121 Cross Timbers Road. The published permit fee is $485 flat.
A dedicated Residential Backup Power permit with three inspections: plumbing rough and gas test where a new gas line is run, electrical rough, then finals.
The site plan must show the generator at least 2 feet from any side property line.
Inspections requested by 7:30am can be done the same day. The Town does not enforce deed restrictions or HOA rules — those are yours to check.
Either way we pull the permits, schedule the inspection and meet the inspector on site. It is inside the installation quote, not a surprise line item afterward — how installation actually works sets out the whole sequence, survey through commissioning, and what moves the price. If you have not settled on a size yet, the generator sizing calculator is the place to start, because the kW figure is what everything else in Flower Mound is quoted against.
Worth knowing before you read Flower Mound’s handout: Texas law now limits what a city may require on a residential generator install at or under 50kW, and some published city guidance predates it. Since 1 September 2025 a second statute lets a qualified third party do the plan review and the inspection instead of the city, which puts a three business day clock on the permit. See what your city can and cannot require, and what your HOA cannot prohibit.
Utilities that affect your install
Electric delivery in Flower Mound is CoServ or Oncor, depending on the address — and which one you have is decided by your address, not your city. The boundary runs through neighborhoods here, so two houses on the same street can sit with different providers. It matters before we quote: a co-op member cannot switch retail providers at all, and the two utilities take different routes to approving a service-entrance tie-in. Read the provider name off your own bill rather than assuming from the postcode.
Natural gas is typically Atmos Energy or CoServ, depending on the address, and the gas side is where installation prices move the most: if your meter has spare capacity and sits near the generator location, the gas work is straightforward. If the meter has to be upsized, that is a utility request with its own timeline. Service territory boundaries in the Metroplex do not follow city limits cleanly, so we verify both utilities against your actual address rather than assuming from the city name.
Solar panels and a standby generator in Flower Mound
If your Flower Mound home already has grid-tied solar, the solar has to connect on the utility side of the generator's transfer switch, between the meter and the switch, so the generator can never feed the inverters. Why that matters is in adding a standby generator to a solar home. How the connection is made depends on which utility serves your address, and more than one serves Flower Mound: CoServ Electric or Oncor Electric Delivery. Check the name on your electric bill; territory does not follow city limits.
CoServ Electric(electric cooperative)
- Disconnect:CoServ requires a visible, lockable, labeled AC disconnect with a visible break and an external handle, on an exterior wall within 10 feet of the CoServ meter (a placard is required at the meter if it is farther), and lockable open with a cooperative lock.
- Meter socket:CoServ's Electric Service Manual says its meter sockets are to be used exclusively for CoServ metering, and members may not double lug them.
- Generator and transfer switch:CoServ requires an application before a standby generator is installed, requires an automatic transfer switch, and says standby generators must not export power and must use an open-transition (break-before-make) transfer switch.
- Solar approval:Residential solar goes through CoServ's interconnection application, a $150 fee, and a review of up to 15 business days. The system may not operate until CoServ issues its permission-to-operate letter. CoServ asks whether the inverter is UL 1741 certified and requires IEEE 1547 compliance.
- Worth confirming:CoServ's generator FAQ says it allows a GenerLink transfer switch, which mounts at the meter socket. That sits uneasily with its own meter-socket rule, so we confirm with CoServ before relying on either.
- Not published by CoServ Electric:whether a supply-side tap between the meter and the main disconnect needs separate CoServ approval. We confirm these with the utility in writing before the job, rather than assume another utility's rule applies.
Sources: CoServ Distributed Generation Procedures and Guidelines Manual (February 2026); CoServ Electric Service Manual, section 6.2; CoServ: Requirements for Residential Emergency/Standby Generation; CoServ: Solar Installations. Checked 2026-09-30.
Oncor Electric Delivery(delivery utility)
- Disconnect:A visible, lockable, labeled AC disconnect is required between the Oncor meter and every source of distributed generation, within 10 feet of the meter unless special placards are used. Oncor states that molded-case breakers are not an acceptable disconnect.
- Meter socket:The meter socket is reserved for Oncor metering. No meter collars or other devices may be installed in it or between the meter and the socket.
- Generator and transfer switch:The generator transfer switch must be installed on the load side of the meter base, never integrated with or in series with the meter. Oncor asks installers to confirm whether the transfer switch is open or closed transition.
- Solar approval:Solar needs an Oncor interconnection application, and Oncor treats a system as certified when it meets UL 1741 and the applicable parts of IEEE 1547.
Sources: Oncor Electric Service Guidelines (February 2025), sections 100.01.18, 500.06 and 700; Oncor Residential/Small Commercial Project Requirements (May 2025). Checked 2026-09-30.
Who actually shows up in Flower Mound
UTS ElectricPros is the authorized Cummins dealer. The installation is carried out by Clements Electric, the dba our licensed electrical crews work under operating from 2100 S Great Southwest Pkwy, Suite 505 in Grand Prairie.
That distinction is worth understanding, because most of this industry works the other way round. Online retailers ship a generator and leave you to find an installer. Lead-generation sites sell your details to whoever pays for them. Here the sale and the installation sit inside one relationship, which means nobody gets to point at the other when something needs sorting out in year three.
Our installation crews work under the Clements Electric name, which also covers repairs, maintenance and other electrical work in Flower Mound. Clements Electric standby generator installation and service in Flower Mound.
Popular in Flower Mound
Cummins RS20AC
Air-cooled · Natural Gas / LP Vapor
ATS included
Cummins RS13A
Air-cooled · Natural Gas / LP Vapor
The whole range, here
What we sell and install in Flower Mound
Every Cummins line we carry is available in Flower Mound. The ones below that are permanently installed, we install — with our own licensed electricians under TECL #40628, across Denton County and the rest of the Metroplex. The rest ship direct to your address and need no electrician at all.
Installed in Flower Mound
- Home standby generators Whole-house backup power, started automatically. Homeowners who cannot simply leave — small children, someone on medical equipment, a well pump, a home office, or livestock on the property.
- Light commercial diesel generators Keeping a business open when the power is not. Offices, clinics, restaurants, retail suites and small industrial buildings that cannot close for a day.
- Agricultural standby generators Constant power for livestock, irrigation and cold storage. Poultry houses, dairies, row-crop irrigation and anyone whose animals depend on a fan or a pump running.
- Automatic transfer switches The switch that makes backup power automatic. Every permanently installed standby generator, residential or commercial.
Shipped to Flower Mound, no installation needed
- Portable generators Power you can carry to where it is needed. Campers, tailgaters, tradespeople, and homeowners who want a fallback without a five-figure installation.
- RV generators Power on the coach, away from shore power. Motorhome and coach owners running Onan QG and QD gensets.
- Mobile trailer-mounted diesel generators Temporary power at scale, towed to site. Equipment rental companies buying fleet units, and contractors powering a site directly.
Equipment ships to all fifty states and completes in the cart. Installation is Dallas–Fort Worth only, because it is bounded by a Texas electrical license and quoted against your gas meter, your panel and Flower Mound’s permit — how that works, or book the free survey.
Generator questions from Flower Mound homeowners
How much does a whole house generator cost in Flower Mound?
Equipment is published on every model page — a 20kW Cummins RS20A is $5,925.25. Installed in Flower Mound, a typical 20kW system runs $13,500 to $17,000 all in, including the pad, gas work, transfer switch, permit and commissioning. The spread depends on how far the generator sits from your gas meter and electrical panel, and whether the gas line needs upsizing.
Do I need a permit for a generator in Flower Mound?
Yes. Standby generator installations in Flower Mound require permitting and inspection, and depending on the scope that can mean separate electrical and mechanical permits. We pull the permits and meet the inspector — it is part of the installation quote, not an extra you discover later. Requirements and fees differ between Denton County cities, which is why we confirm the specifics for your address rather than quoting a generic number.
Who provides gas and electric service in Flower Mound?
Electric delivery in Flower Mound is CoServ or Oncor, depending on the address, and natural gas is typically Atmos Energy or CoServ, depending on the address. Both matter to a generator project: the electric utility governs how the transfer switch ties in at the meter, and the gas utility determines whether your meter can carry the additional demand or needs upsizing. We verify both against your actual address during the survey, because service boundaries in the Metroplex do not follow city limits cleanly.
How long does installation take in Flower Mound?
The physical work on a typical residential job is one to three days. The calendar time is usually driven by permitting and inspection scheduling rather than by our crew. We give you a realistic window at the survey once we know which jurisdiction and what scope — we would rather quote a date we can hit.
Do you actually serve Flower Mound, or just advertise there?
Yes. UTS ElectricPros is the authorized Cummins dealer, and the installation in Flower Mound is performed by Clements Electric, the assumed name (dba) under which UTS ElectricPros, LLC operates its licensed electrical crews, working from 2100 S Great Southwest Pkwy, Suite 505, Grand Prairie. That is one relationship, not a lead sold to whoever bids lowest — the same people who sold you the generator are accountable for how it goes in and how it runs afterward.