WE ARE PROUD TO BE INDEPENDENT AND IN NO WAY ASSOCIATED WITH MANUFACTURERS. TO STAY UNBIASED, WE DO NOT ACCEPT FREE PRODUCTS. WE EARN FROM ADVERTISING FEES PAID BY RETAILERS ON QUALIFYING PURCHASES.

Generac GP15000E Spec Review

The Generac GP15000E (5734) is a powerful open frame portable generator with a rated wattage of 15000 W and a starting wattage of 22500 W.

CompareShortlistShortlistedRemoved from shortlist 7

Picture 1 of the Generac GP15000E
Picture 2 of the Generac GP15000E
Picture 3 of the Generac GP15000E
Picture 4 of the Generac GP15000E
Set Price Alert
×
Notify me when the price drops
Set an alert for the Generac GP15000E - Current lowest price: $2,399.00
Show all +

Description

A portable unit ideal for applications requiring a large amount of power without being permanent. Ideal for job sites and emergency applications. (source: Generac (opens in a new tab))

Zoom on the Generac GP15000E

In summary, the Generac GP15000E is a powerful portable generator especially useful for professionals in need of safely powering high-intensity work or lighting equipment.

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Generac GP15000E in use

The Generac GP15000E

The Generac GP15000E's engine, 992 cc Generac OHVI 4-stroke, fueled by gasoline, can deliver 120/240V. It provides a running wattage of 15000W and reaches a peak wattage of 22500W.

The generator features a simple and elegant electric starter (battery included).

With a full tank, the GP15000E can operate for around 10 hours at 50% load (fuel consumption around 1.6 GPH), thanks to its fuel capacity of 16 gallons.

The powering of sensitive electronic devices with the GP15000E is not recommended due to its relatively high THD (<20%).

Outlets

The control panel includes the following 8 AC outlets:

Duplex 120V 20A (5-20R) GFCI
Duplex 120V 20A (5-20R)
Two 120V 30A (L5-30R) receptacles
120/240V 30A (L14-30R) receptacle
120/240V 50A (14-50R) receptacle

Additionally, it features 1 DC outlet: there's a 12V 10A receptacle with which charging your batteries is made easy.

Even if this Generac generator isn't quite RV Ready, it still allows for an easy RV connection via an L5-30P to TT-30R adaptor, thanks to its L5-30R receptacle. Besides, because the GP15000E is equipped with a twist-lock L14-30R receptacle, it is transfer switch ready: it can power your home during a power outage, as it can be easily connected to your breaker box to power your household.

Portability

The Generac GP15000E has a conventional, open frame design, of the following dimensions: L48.5 x W31 x H39.5 in, which offers support and allows it to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.

As the generator's weight is 363 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). However, this lack of maneuverability is compensated by its wheel kit (⌀12.3") and its handle, with which you can conveniently shift it, once it's on the ground.

A lift hook, which is on the top of the frame, serves as an extra safety feature for the transport, unloading and loading of the device.

Features

Panel of the Generac GP15000E

The GP15000E's control panel

One of the many GP15000E's features is the data center, included in its control panel, which conveniently provides information on the lifetime run hours and thus, helps you monitor its activity and status.

A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the generator.

As for its security measures, the device features an automatic low oil shut-off and an overload protection (circuit breaker), letting you use it with a peace of mind.

With the basic documentation and an owner's manual (opens in a new tab), letting you start the generator quickly, the Generac GP15000E also comes with several accessories, including: tool kit and funnel.

Emissions

The Generac GP15000E is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor and therefore, can be used in forested areas.

Product Video

The Generac GP15000E versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Generac GP15000E compare to generators of similar power (between 14000 and 18000 W).

  • Weight-wise, the Generac GP15000E has only 363 lbs, which renders it one of the lightest generators which produce 14000 to 18000 rated watts.
  • As the GP15000E features an autonomy of around 10 hours at 50% load, it has one of the highest run times in comparison to the other generators of its power range.
  • Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. This generator, with an estimated fuel consumption of just 1.6 GPH (gallon per hour) at 50% load, is one of the most fuel efficient generators, for the previously mentioned wattage range.

Price comparison

As you can see from this interactive chart, when compared to other 14000-18000W generators, the Generac GP15000E is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget generator.

The bottom line

STRENGTHS:
  • Inexpensive
  • Several accessories included
  • GFCI Outlets
  • Electric start
  • Lightweight for its kind (363 lbs)
  • High run time
  • Fuel efficient
WEAKNESSES:
  • No recoil back-up
  • No remote start
  • Not CARB-compliant

Do you own the Generac GP15000E and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine992 cc Generac OHVI 4-stroke
Starting systemElectric
Power
VoltageAC: 120/240V 60 Hz, DC: 12V
Running watts15000 W
Starting watts22500 W
Running amps (@120/240V)125/62.5 amps
Peaks amps (@120/240V)187.5/93.8 amps
Run time @50% load10 h
Run time @25% loadUnknown
Features
GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 1x Duplex 120V 20A (5-20R) GFCI
  • 1x Duplex 120V 20A (5-20R)
  • 2x 120V 30A (L5-30R)
  • 1x 120/240V 30A (L14-30R)
  • 1x 120/240V 50A (14-50R)
DC outlets1x 12V 10A receptacle
Data centerLifetime run hours
IndicatorsNo
Fuel tank16 gal
Fuel gaugeYes
Misc
Weight363 lbs
Approx. dimensions (L x W x H)48.5 x 31 x 39.5 in
Noise (lower limit)Unknown
THD< 20%
EmissionsEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedFunnel, tool kit, battery, and wheel kit
Warranty2 years
Other model numbers5734

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

×

This form does not send us any personal data (not even your IP address)

About Generac

Generac Power Systems is an American based generator and power equipment manufacturer, founded in 1959. As its name suggests, the main focus of Generac are power generators, and other related electric equipment, such as switches, paralleling systems and small engines. The company has several manufacturing facilities based in the US, thus, their products are made in the USA. However, the company provides no information about the origin of their components.

Warranty Information

The Generac GP15000E is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Generac generators, please consult Generac's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-888-GENERAC (888-436-3722).

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator size calculator.
ItemRunning WattsStarting Watts
At homeSump pump (1/2 hp)10502150
Furnace fan (1/2 hp)8752350
Refrigerator (energy star)1921192
Clothes dryer54006750
Electric range21002100
Hair dryer18001900
Blender400850
Security system180180
Total11997 W13472 W
For campingRadiant heater13001300
RV refrigerator180600
Hair dryer18001900
Electric grill16501650
Electric fry pan15001500
Microwave (1000 watts)15001500
RV AC (11,000 BTU)10101600
Toaster oven800800
Rice cooker650650
Coffee maker600600
Blender400850
Slow cooker270270
Satelite receiver250250
Bug zapper8080
Total11990 W12580 W
For workElectric welder90009000
Table saw18004500
Belt sander11502400
Total11950 W14650 W
Oil capacity? (Asked February 15, 2020)

With filter change, 54.4 fl. oz. Without filter change 44.8 fl. oz.

Couldn't find the right answer for you? Ask your own question.

Your name and email address will not be publicly published. We only need them to be able to answer you directly

We would love to know your opinion

Leave a review

Your total score

Generator Bible
Compare items
  • Total (0)
Compare

You can compare as many generators as you wish. However, for the best results, we recommend you to compare only 2 generators at a time.

0