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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.

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Picture 1 of the Generac GP15000E
Picture 2 of the Generac GP15000E
Picture 3 of the Generac GP15000E
Picture 4 of the Generac GP15000E
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Set an alert for the Generac GP15000E - Current lowest price: $2,839.00
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Price History
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Price history for the Generac GP15000E
Latest updates:
  • $2,839.00 - July 24, 2020
  • $2,787.42 - July 11, 2020
  • $2,839.00 - May 31, 2020
  • $2,555.10 - May 17, 2020
  • $2,839.00 - April 16, 2020
Data source: homedepot.com
Since: April 16, 2020
  • Highest Price: $2,839.00 - April 16, 2020
  • Lowest Price: $2,555.10 - May 17, 2020

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 a nutshell, the Generac GP15000E is a powerful portable generator mostly geared towards professionals who want to ensure that a power failure will not prevent them from working.

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.

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).

The fuel capacity of 16 gallons allows the GP15000E to operate for around 10 hours at 50% load with a full tank (fuel consumption around 1.6 GPH).

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

Furthermore, it has 1 DC outlet: there's a 12V 10A receptacle allowing you to easily charge your batteries.

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, due to the featured twist-lock L14-30R receptacle, the GP15000E is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.

Portability

The design of the Generac GP15000E is a typical, open frame, with the dimensions of L48.5 x W31 x H39.5 in, offering support and stability and enabling the possibility of raising it above ground level. The featured design is ideal for the outdoors and all tough environments.

Although this generator is technically considered 'portable' (in the sense that it can be moved), its 363 lbs make it incredibly difficult to manually lift and transport. Nevertheless, thanks to its wheel kit (⌀12.3") and its handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed 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

Monitoring of the GP15000E's status and activity is made possible by a digital data center, which provides information on the lifetime run hours and is one of the features of its control panel.

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 overload protection (circuit breaker) and an automatic low oil shut-off, 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 thus, may be used in forested areas.

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).

  • As for its weight, the Generac GP15000E weighs only 363 pounds, making it one of the lightest generators in the 14000-18000 rated wattage category.
  • Thanks to an impressive running time of around 10 hours at 50% load, the GP15000E benefits from one of the highest run times among generators of a similar output
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. This generator is one of the most fuel efficient models of the aforementioned output range, as its estimated fuel consumption reaches just 1.6 GPH (gallon per hour) at 50% load.

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% loadN/A
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)N/A
THD< 20%
EmissionsEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedFunnel, tool kit and battery
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.

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 sizer.
ItemRunning WattsStarting Watts
At homeAC (10,000 BTU)15002200
Electric fry pan15001500
Microwave (1000 watts)15001500
Dish washer15003000
Sump pump (1/2 hp)10502150
Refrigerator (energy star)1921192
Electric range21002100
Hair dryer18001900
Freezer8101750
Pair of small speakers4545
Total11997 W13497 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Electric grill16501650
Electric fry pan15001500
Microwave (1000 watts)15001500
Radiant heater13001300
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.

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