BUY New & Used Commercial Backup Generators 2300kW-2599kW GENERATORS FOR SALE

Industries That Use 2300 kW to 2599 kW Generators

Most buyers in this band already had a 2 MW plan on paper and watched it fail the load study. A new production line, a bigger chiller plant, or a large motor that has to start while everything else keeps running pushes the requirement past 2000 kW, and the next practical machine is a 2500 kW set.

• Process manufacturing: Continuous lines such as extrusion, glass, paper, and chemicals, where losing power mid-batch ruins product and restarting takes longer than the outage did. Large compressors and chillers set the size here, not the lighting and controls.
• Refining and gas processing: Process units that need an orderly shutdown or a ride-through, often with prime-duty hours written into the specification.
• Water and wastewater plants: Plants whose high-service or influent pump stations have grown past what a 2 MW set can start in sequence, especially after an expansion adds another large pump.
• Mining and mineral processing: Crushers, mills, and dewatering pumps on sites with a weak feed, where the set may carry production for long hours rather than waiting for an outage.
• Data centers: Halls where each set backs one block of IT load and more sets are added as the building fills.
• Hospital central plants: Campus energy plants serving several buildings, where seismic certification and California OSHPD pre-approval decide which package can be installed.

More on sizing by sector is on our industries served pages.

2300 kW to 2599 kW Generators at a Glance

• Apparent power: 2,875 to 3,249 kVA at 0.8 power factor.
• Current: 3,765 A at 480V and 435 A at 4160V for a 2500 kW set, per our amperage chart.
• Diesel burn: 177.9 gal/hr at full load on our chart’s 2500 kW row; Kohler prints 172.0 gal/hr for the KD2500 at full standby.
• Weight: up to 59,598 lb wet for an open KD2500, before a sub-base tank or enclosure.
• Most common format: a 2500 kW diesel standby set, EPA Tier 2 for stationary emergency use.
• What decides the package: required runtime, which sets the tank, and site ambient, which sets the radiator and the enclosure level.

Every Unit Listed in This Band Is a 2500 kW Standby Set

These are the units currently listed between 2300 kW and 2599 kW:

Nothing is listed at 2300 or 2400 kW. The machines we see for this band are built at 2500 kW, so a load study that comes back at 2,350 kW is in practice a choice among 2500 kW machines, and the margin above the load is whatever is left of 2500 once the site and duty are accounted for. The two new surplus units are unused stock rather than run equipment, which can be quicker to deliver than a factory order. The full list of single-size units is on our 2500 kW generators page.

Spec Sheets That Land Between 2300 and 2599 kW

Four published ratings fall in or next to this band, from the diesel and gas sheets we reference most:

Which machine fits depends on the duty more than on the kilowatt figure. For emergency standby, the KD2500 covers the whole band on a single frame. For a load that runs around the clock, its 2270 kW prime figure drops below 2300, and the only single-frame rating here that holds 2500 kW all day is the continuous rating of the Cummins C3000 D6e, which is 9,173 lb heavier wet than the open KD2500. On gas, the G3520 reaches the band only on its standby rating, and the C2000 N6CD stays below it.

Diesel Burn at 2250 kW and 2500 kW

Two rows of our diesel fuel consumption chart bracket this band. The daily column is the full-load rate times 24:

The KD2500 burns a little less than the chart. Kohler lists 172.0 gal/hr at 100% of standby, or 4,128 gallons a day, and 102.8 gal/hr at 50%, against 91.4 on the chart’s half-load row. Use the chart for a first pass and the engine’s own sheet once a model is chosen, because a 6 gal/hr difference at full load adds up to roughly 140 gallons over a day.

Current at 2250 kW and 2500 kW

From our generator amperage chart, which shows no 208V figure at this size:

Moving from a 2 MW set to a 2500 kW set adds about 750 A on a 480V bus. On a plant that already has 480V switchgear sized for a smaller generator, that increase is often what forces new breakers and cable rather than the generator itself. At 4160V the same step adds less than 90 A, which is why process plants with medium-voltage distribution find this upgrade easier. Our power calculators will turn a motor list into a kVA figure.

When Does a Process Load Outgrow 2 MW?

Usually when the largest motor start lands on top of a running load that is already close to 2000 kW. The steady-state total may still fit a 2 MW set, but the voltage dip during the start does not.

Three things push process plants past the 2 MW line. Expansions add a motor without retiring one. Sequenced restarts after an outage stack several starts into a short window, and a process that cannot wait a few minutes between them needs the larger set. Site conditions take capacity away as well: the KD2500’s cooling rating drops when an enclosure is added, as shown below. Rather than moving to a paralleled pair of 2000 kW sets, many plants choose one 2500 kW machine, which keeps the switchgear simple and needs a single pad. The parent 2000kW – 3000kW generators page covers the full megawatt span.

Kohler KD2500: 2500 kW Standby, 2270 kW Prime

The KD2500 covers this band on its standby rating and falls 30 kW short of it on prime. That one fact decides whether it belongs on your shortlist.

For emergency standby, where the set runs during outages and tests, the 2500 kW rating gives a 2,300 to 2,400 kW load real headroom for motor starts. For prime duty, where the set runs for long hours or as the main source, the usable figure is 2270 kW, which does not cover a 2300 kW load. Kohler certifies the engine to EPA Tier 2 for stationary emergency applications, so a set logging prime hours has to meet the certification your air permit sets instead. Spring isolation under the skid is standard, and IBC seismic certification and California OSHPD pre-approval are listed for the model, which is relevant wherever the set must be anchored for seismic loads or installed at a hospital.

Sizing the KD2500 Sub-Base Tank Against Runtime

Kohler’s sub-base tanks hold 2,266 to 4,328 gallons, which gives about 13 to 25 hours at full standby load and about 22 to 42 hours at half load.

The full-load and half-load columns use Kohler’s own figures and the middle column uses our chart’s 2500 kW row, so treat it as an estimate. Start from the runtime your code, insurer, or continuity plan requires. If it is under a day at realistic load, a sub-base tank can do it alone. If it is longer, the sub-base tank becomes the day tank and bulk storage feeds it. The tank is double-wall, meets UL 142, mounts under the skid, and includes a fuel leak detection switch. Everything in it also adds to the weight on the pad.

Sound Level 1 or Level 2, and What Each Does to Cooling

Level 1 is for weather protection with basic silencing, and Level 2 is for sites where noise limits are tight. Both reduce the ambient temperature the set is rated for.

• Sound Level 1: an aluminum housing with internal silencers, braced for 150 mph winds.
• Sound Level 2: builds on Level 1 with up to 2 in. of insulation, secondary silencers, and an upward air outlet.
• Radiator rating: Kohler offers radiator packages rated for 50 °C (122 °F) or 40 °C (104 °F) ambient.
• Enclosure derate: an enclosed silencer takes 5 °C (9 °F) off that rating, so the 50 °C package becomes 45 °C (113 °F) and the 40 °C package becomes 35 °C (95 °F).

For a hot-climate process plant, an enclosed set on the 40 °C radiator is rated for 35 °C, which a summer afternoon can exceed. If the site sees that kind of heat, specify the 50 °C package and keep clear space around the housing so discharge air is not drawn back into the intake.

How Much Does the Pad Have to Carry?

At least 59,598 lb for the open set, plus the tank, its fuel, and any enclosure.

Kohler gives the open KD2500 a maximum size of 273.9 x 114.8 x 130.0 in. Spread over that footprint, about 218 square feet, the open set alone averages roughly 270 lb per square foot. Adding a sub-base tank, its fuel, and a Level 2 enclosure raises that number, and Kohler marks its dimension drawing as reference material rather than an installation plan. Design the foundation from the certified drawing for the package you actually order, not from brochure figures. Shipping and crane planning follow the same configuration, and our terms are in the shipping and returns policy.

Can Natural Gas Cover 2300 kW to 2599 kW?

Only on a standby rating, and only up to 2500 ekW. Caterpillar publishes the G3520 fast response at no more than 2500 ekW standby at 60 Hz, the highest gas figure in the sheets we work from.

The G3520 can take its full rated load as a single block, and its heat rate at 2000 ekW is 9,116 Btu/ekW-hr. It is designed for a low-pressure supply, but confirm pressure and flow with the data sheet for the exact unit. The Cummins C2000 N6CD, a pipeline gas set rated 2000 kW continuous, needs 2.2 to 6.5 psi at the fuel shutoff valve inlet and 15.71 MMBTU/hr at full load, and measures 22 x 7 x 9 ft. For a plant that wants gas for long hours above 2000 kW continuous, that means two sets in parallel. Gas units are under industrial natural gas generators and diesel units under industrial diesel generators.

Where 2300 kW to 2599 kW Sits Among Its Neighbors

If the load study puts you near either edge of this band, compare these:

One step either side, see our 2000 kW and 3000 kW generator pages, or browse every output on shop by kW. For a turnaround or other short-term need, Stag Power Rentals is our rental side, and our generator financing options can spread the cost of a permanent purchase.

Inspected, Load Tested, and Backed After the Sale

Before shipping, each generator we sell goes through our 22-point inspection and load bank testing. For a set that will be lifted onto a pad and tied into process switchgear, that test is the last convenient chance to find a problem. Turnkey Industries has traded industrial generators for over a decade, and every purchase carries our 30-day IronClad warranty. After commissioning, our service and maintenance team covers emergency service, industrial generator repair, and routine testing.

Ready to Buy a 2300kW – 2599kW Generator?

Send us your motor list, duty, required runtime, and site temperature range, and we’ll tell you which 2500 kW package, tank, and enclosure fit. Browse our new industrial generators and used industrial generators, or contact us and we’ll start the sizing with you.