Cummins RS17A
Air-cooled · Natural Gas / LP Vapor
Denton County · Texas
Generator installation in Denton, TX
A typical 20kW Cummins whole-house generator installed in Denton is estimated at $13,500–$17,000. Estimate only. Every installation is different; a site visit is required to determine whether your installation will cost less or more than this estimate. The RS20A unit alone is $5,925.25. We pull the Denton permit and meet the inspector. Electric delivery is Denton Municipal Electric, a community-owned utility, for most of the city, with CoServ Electric and Oncor at some addresses; natural gas is Atmos Energy.
Authorized Cummins dealer · TECL #40628 · our own electricians, no subcontracted electrical work
Denton at a glance
| County | Denton County |
|---|---|
| Electric delivery | Denton Municipal Electric, a community-owned utility, for most of the city, with CoServ Electric and Oncor at some addresses |
| Natural gas | Atmos Energy |
| Permit office | Development Services, 401 N. Elm St |
| City keeps install authority | Yes, at city-utility addresses |
| Typical 20kW installed | $13,500 – $17,000 Estimate only; installations vary, and a site visit determines your price. |
| Site survey | Free, about 45 minutes |
Permits and inspection in Denton
Permits go through Development Services, 401 N. Elm St.
New and replacement generators both need a permit. Three inspections: plumbing rough where applicable, electrical rough, electrical final.
Denton is the exception to state preemption, because Denton Municipal Electric is community-owned. At a DME address the city keeps its authority over a residential generator install, so its own permit requirements apply in full.
Source: City of Denton: Generators, checked 2026-10-09. Other cities side by side: generator permit fees by DFW city.
State preemption does not reach every Denton address. Texas Local Government Code § 229.102 bars cities from regulating a residential backup system of 50kW or less, but not where the city owns the electric utility, and Denton’s does. At those addresses the city’s own requirements apply. How the two statutes work.
Served by CoServ? CoServ’s standby generator requirements: the application, the open-transition transfer switch and the no-export rule.
Utilities that affect your install
Electric delivery in Denton is Denton Municipal Electric, a community-owned utility, for most of the city, with CoServ Electric and Oncor at some addresses. On the municipal side the meter and the service drop belong to the same body that issues your permit, so the transfer-switch tie-in is agreed with the city. Off it, you are in the deregulated market with a separate delivery company. Your bill shows which side you are on.
Natural gas is Atmos Energy. If the meter cannot carry the generator on top of the furnace, water heater and other appliances, the utility has to upsize it, which is a separate request with its own timeline. How gas line sizing works.
Already have solar? It has to connect on the utility side of the transfer switch so the generator never feeds the inverters, and the disconnect and meter rules come from Denton Municipal Electric or CoServ Electric or Oncor Electric Delivery, whichever serves your address. Why, and how the main DFW utilities handle it.
Who does the work
UTS ElectricPros is the authorized Cummins dealer. Installation is done by our own electricians working as Clements Electric, our dba, from 2100 S Great Southwest Pkwy, Suite 505, Grand Prairie, under TECL #40628. The installation process runs survey, written price, permit, install, inspection and commissioning under load.
Our installation crews work under the Clements Electric name, which also covers repairs, maintenance and other electrical work in Denton. Clements Electric standby generator installation and service in Denton.
Popular in Denton
Cummins RS20AC
Air-cooled · Natural Gas / LP Vapor
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Cummins RS13A
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Other Cummins equipment for Denton
Installed in Denton: Home standby generators · Light commercial diesel generators · Agricultural standby generators · Automatic transfer switches
Shipped to Denton, no installation needed: Portable generators · RV generators · Mobile trailer-mounted diesel generators
Generator questions from Denton homeowners
How much does a whole house generator cost in Denton?
A typical 20kW Cummins system installed in Denton is estimated at $13,500 to $17,000, including the pad, transfer switch, permit and commissioning, with the gas line included as its own line item. Estimate only. Every installation is different; a site visit is required to determine whether your installation will cost less or more than this estimate. The RS20A unit itself is $5,925.25. Your figure depends on the distance from the generator to the gas meter and the electrical panel and on whether the gas meter needs upsizing, so it is fixed in writing after a free survey.
Do I need a permit for a generator in Denton?
Yes. Permits go through Development Services, 401 N. Elm St. New and replacement generators both need a permit. Three inspections: plumbing rough where applicable, electrical rough, electrical final. We pull the permit and meet the inspector, and it is inside the installation quote.
Can Denton regulate my home generator install?
At an address served by Denton's own utility, yes. Texas Local Government Code § 229.102 bars cities from regulating the installation or inspection of a residential backup system of 50kW or less, but the statute does not limit a municipally owned utility within its own service area, so the city's rules still apply at those addresses.
Who provides gas and electric service in Denton?
Electric delivery is Denton Municipal Electric, a community-owned utility, for most of the city, with CoServ Electric and Oncor at some addresses. Natural gas is Atmos Energy. The electric utility sets how the transfer switch ties in at the meter; the gas utility decides whether your meter can carry the generator's extra demand. Service territory does not follow city limits, so we confirm both from your bill before quoting.
Who installs the generator in Denton?
Our own licensed electricians, working as Clements Electric, the dba of UTS ElectricPros, LLC, from 2100 S Great Southwest Pkwy, Suite 505, Grand Prairie, under TECL #40628. The gas line is run by a licensed plumber we hire and warrant, or by your own plumber if you prefer. UTS ElectricPros is the authorized Cummins dealer, so the same company sells, installs and handles the warranty.