Cummins RS80
Liquid-cooled · Natural Gas / LP Vapor
120/240V single phase
$35,467.96
Equipment only. Installation quoted after a free site survey.
View detailsConnect Series Liquid-Cooled
Cummins RS100 — 100kW Standby Generator
100kW liquid-cooled standby generator, Natural Gas / LP Vapor. Clinics, restaurants, data closets, cold storage, multi-tenant retail and small industrial.
Representative manufacturer image of the range. Enclosure finish, color and dimensions vary by model and configuration — see the specifications below for this unit.
100 kW Natural Gas / LP Vapor Liquid-cooled Aluminum
The RS100 is liquid-cooled. That matters above roughly 25kW, where an air-cooled engine can no longer shed heat during the long runs a multi-day outage demands. It is a larger machine - 118.7 x 40 x 58.3 inches and 2830 lb - and it needs a proper pad and clearance.
It runs on natural gas or LP vapor. On natural gas there is no tank to fill and no runtime limit as long as the utility main holds pressure, which is why it is the default choice on almost every DFW home that already has gas service.
Available in 4 factory configurations: 120/240 1Ph, 120/208 3Ph, 277/480 3Ph, 120/240 3Ph. The correct one depends on your incoming service, not on preference - ordering the wrong voltage is the single most expensive mistake on a job like this, so we confirm it against your meter and panel before anything is ordered.
Equipment price
$41,139.72
Equipment only — installation quoted separately
The RS100 is sold by UTS ElectricPros, an authorized Cummins dealer in Dallas–Fort Worth. Buying through an authorized dealer is what keeps the manufacturer warranty valid — equipment bought from an unauthorized reseller frequently is not covered, and owners tend to find that out at the worst possible moment.
Part A054F867
Match this to your building's existing service. It does not change the generator's output.
A separate service
Want us to install it?
Installation is not included in the price above and is not sold at checkout. It is quoted on its own, in writing, after a free on-site survey. You are welcome to buy the equipment here and use your own electrician.
- ✓ Concrete or composite pad
- ✓ Gas line and pressure test by a licensed plumber
- ✓ Transfer switch and electrical tie-in
- ✓ Permit and city inspection
- ✓ Startup, load test and walkthrough
Prefer to talk it through? Have us call you.
Got it. We will call you. If you would rather not wait, ring (214) 957-4307 and ask for whoever is on generators.
Specifications
| Model | Cummins RS100 |
|---|---|
| Rated output | 100 kW |
| Fuel | Natural Gas / LP Vapor |
| Cooling | Liquid-cooled |
| Enclosure | Aluminum |
| Weight | 2830 lb |
| Dimensions (L×W×H) | 118.7 x 40 x 58.3 in |
| Voltage configurations | 120/240 1Ph, 120/208 3Ph, 277/480 3Ph, 120/240 3Ph |
| Extreme cold package | Available as an upgrade |
| Transfer switch | Sold separately, sized to your service |
| Application | commercial |
| Rated amps (NG / LP) | 417 / 417 A at 120/240 V |
| Sound level | 71 dB(A) at 23 ft (7 m) with Sound Level 2 enclosure |
| Cummins model | C100 N6 |
| Displacement | 5.9 liters (359 in³) |
| Cylinder block | Cast iron, in-line 6 cylinder |
| Rated speed | 1800 rpm |
| Voltage regulation | ±1.0% no load to full load |
| Frequency regulation | ±0.75% random at 60 Hz |
| Governor class | ISO 8528 Part 1 Class G2 |
| Controller | PowerCommand electronic control |
| Main breaker | 500 A |
| Derating | Full engine power to 2,500 ft at up to 104°F. Above that, derate 4% per 1,000 ft and 2% per 10°C. |
| Fuel | Natural gas and LP output are identical on the liquid-cooled range — there is no natural gas derate. |
| Certifications | UL 2200 |
| Warranty | 2 year standby base warranty. Extended warranty options available. |
| Extended warranty | Cummins factory coverage for 5, 7 or 10 years, from $1,327.78. See every price |
Available configurations
4 factory configurations. We confirm the correct one against your service before anything is ordered.
| Part number | Voltage | Phase | Price |
|---|---|---|---|
| A054F867 | 120/240 | 1Ph | $41,139.72 |
| A054F870 | 120/208 | 3Ph | $41,139.72 |
| A054F873 | 277/480 | 3Ph | $41,139.72 |
| A054F874 | 120/240 | 3Ph | $41,139.72 |
All prices are for the equipment only.
Built in
What the RS100 does that the spec table does not show
1800 rpm, not 3600
Liquid-cooled sets turn at half the speed of an air-cooled unit. Fewer revolutions per hour of running means less wear, and it is a large part of why these are quieter despite being far more powerful.
Sound Level 2 enclosure
From 60 dB(A) at 23 feet on the smaller sets. A 30kW liquid-cooled unit is quieter than a 20kW air-cooled one.
PowerCommand control
Electronic governing and voltage regulation, with alarm and status monitoring. Regulation is tighter than the air-cooled range at ±1.0%.
Continuous rated output
A radiator loop means it can hold rated output indefinitely rather than shedding heat into the air. That is the practical difference in a multi-day outage.
Accessories and maintenance parts for this unit →
Specifications on this page are taken from the Cummins published specification sheet for
the air-cooled Connect range.
Download it from Cummins →
Pairs with
Transfer switches for a 100kW set
The switch is sized to your electrical service, not to the generator. These are the families that typically apply at this output — we confirm the exact one at the survey.
Questions about the RS100
How much does a Cummins RS100 cost installed in Dallas-Fort Worth?
The RS100 equipment price is $41,139.72. Installation on a 100kW liquid-cooled unit varies too widely to band honestly - the pad, the fuel supply, the switchgear and the electrical service are all engineered to the specific site. We quote it in writing after a site survey, and we will tell you the drivers before we quote so you can see where the money goes.
What will the RS100 actually run?
Commercial standby power for facilities with substantial motor and HVAC load. Final confirmation comes from a load calculation against your actual panel, which we do at the survey.
Do I need a transfer switch with the RS100?
Yes. A standby generator cannot be code-compliantly connected without an automatic transfer switch - it is what keeps your generator from backfeeding the utility line and endangering line crews. The switch is sized to your electrical service, not to the generator, so we confirm your service size at the survey before specifying it.
Is the RS100 in stock?
Availability changes weekly. A refundable deposit reserves a specific unit and locks the equipment price for 90 days, which is the practical way to hold one while the survey and permit work happen. If we cannot source it in a reasonable window, you get the deposit back.
Step up or down
Is 100kW the right size?
The next capacity either side in the liquid-cooled range. If you are not sure which way to go, the sizing calculator works it out against your own house rather than its square footage alone.
Down to 80kW — less headroom, lower install cost.
Up to 125kW — room for a second AC or a well pump.
Cummins RS125
Liquid-cooled · Natural Gas / LP Vapor
Pricing
Quoted per project
Units at this size are specified against your electrical service, switchgear and fuel arrangement, so they are quoted per project rather than listed at a shelf price.
View detailsWant the RS100 priced for your address?
Equipment is $41,139.72. The installation number depends on your property, and the only honest way to get it is to come look. That visit is free.
What it is for
Keeping a business open when the power is not
When the power stops the business stops. Refrigeration thaws, the point of sale goes dark, card payments fail, doors and tills stop working and staff get sent home. For a clinic or a restaurant it is not only lost revenue, it is a food-safety and patient-care obligation.
Why it becomes urgent
The same storm and grid events that take out homes take out the block the business sits on, and a commercial outage costs money by the hour from the first minute.
Who buys it
Offices, clinics, restaurants, retail suites and small industrial buildings that cannot close for a day.
The RS100 is installed across the Dallas–Fort Worth Metroplex by our own licensed crews — the cities we serve, what installation involves, and a free on-site survey before any number is put in writing.
Before you buy the RS100
The questions that decide whether this is the right machine, answered properly rather than in a sentence on a product page.
- Is 100kW the right size for the load?Size against the connected load and the starting surge, not the floor area.
- Natural gas or propane?Fuel decides runtime, refueling and what the gas side of the install costs.
- How loud is it, really?Published dB by model, and what that sounds like from a neighbor’s window.
- Will my gas line carry it?The most common reason a quote moves after the survey. Real BTU demand and the pressure it needs under load.
- What can my city require?Less than it used to, and a third party can now do the inspection.
All the generator guides we have written
Every Cummins liquid-cooled standby, 25kW to 150kW · Or a portable, if you only need a few circuits
Installed across Dallas–Fort Worth
The RS100 ships anywhere in the country. Installation is Dallas–Fort Worth only, carried out by our own licensed crews under TECL #40628 operating from Grand Prairie — because a generator is quoted against your gas meter, your panel and your city, which nobody can do from a warehouse. What installation actually involves.
- Generator installation in GarlandGarland Power & Light, the city's own utility, for most but not all of the city
- Generator installation in Highland ParkOncor Electric Delivery
- Generator installation in Trophy ClubTri-County Electric Cooperative or Oncor, depending on the address
- Generator installation in PlanoOncor or CoServ Electric, depending on the address
All 27 cities we install in → · every install includes the permit, the inspection and meeting the inspector on site, and the number comes from a free on-site survey rather than a price list.
After the RS100 is in
A generator is a fifteen-year relationship, not a transaction. What that looks like from here.
Maintenance and service plans
Skipped maintenance is the top cause of an outage-night no-start. What a visit covers and how often it is due.
The battery, specifically
The component that fails most often when maintenance is skipped, and why the weekly exercise does not prove it is healthy.
Cummins warranty, and ours
What the manufacturer covers, what the installer covers, and which one you call when something fails.
Parts and accessories
Cold-weather kits, maintenance parts and the part numbers that fit this unit.