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Model # 5734
MSRP: $2,872.00
Every Day Price: $2,399.00
Every Day Price: $2,399.00
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Avg. Product Review Rating: 4.7/5 (based on 7 reviews - read reviews) Write a Review - $10 Store Credit

Generac Portable GP Series GP15000E Electric Start

  • The Generac OHVI engine incorporates full pressure lubrication with automotive style spin on oil filter for longer life engine
  • Idle control reduces noise and conserves fuel for extended run-times
  • Hour meter tracks maintenance intervals
  • Large-capacity fuel tank with incorporated fuel gauge provides durability and extended run times
  • Low-oil pressure shutdown automatically safeguards engine from damage
  • Hardened 1 1/4" steel tube cradle for added durability and strength
  • Integrated lifting eye for easy transport and security on the job site

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Generac Power Systems 5734 Details and Specifications

Generac Portable GP Series GP15000E With Electric Start

One of the Most Powerful Portable Generators Available
Power outages usually occur without warning. Ideally, a homeowner is prepared with an automatic home standby generator installed and always ready to go. However, if a portable generator is the only option for backup power during an emergency, Generac's GP Series 15000 Watt unit is an excellent option, with enough power to run up to a 5-ton air conditioner and more. Also an ideal choice for job sites with high power requirements.

Reliability From the Start
It’s in the engine. Because of Generac’s focus on power generation, we know how to design an engine that can stand up to the long hours of continuous use generators can be required to run. Includes low oil shutdown and cast iron cylinders for added longevity, features not found on every portable generator engine.

Easily Accessible Controls
A portable generator needs to be ready for use at all times. Generac added maintenance reminders right on the hour meter, and the convenient fuel gauge provides at-a-glance fuel monitoring. Many portable models have controls located in inconvenient locations, making it difficult to access them quickly, especially in the dark. We gave control placement careful consideration, with comprehensive control sets conveniently located for easy access.

Output Control Panel
Receptacles are protected by circuit breakers to protect cords and prevent overloading. The 50-amp, 120/240 volt receptacle is protected by a toggle-type circuit breaker. All other AC receptacles have push-button type breakers. The 12-Volt DC charging outlet is current limited to 10 amperes. 30-Amp and 50-Amp receptacles require the correct generator cables for use (sold separately).

    •  (2) 120V 20-Amp 5-20R Duplex receptacles (one GFCI) provide up to 2400 watts of power each.
    •  (2) 120V 30-Amp L5-30R Twist Lock receptacles provide up 3600 watts of power each.
    •  (1) 125/250V 30-Amp L14-30R Twist Lock  receptacle for up to 7200 watts of power.
    •  (1) 125/250V 50-Amp 14-50R supplies 12,000 watts of power
    •  (1) 12-Volt, 10-Amp outlet allows battery charging using the included clip on battery cord.

This generator has ground bonded to neutral and tied to the generator frame. Additional grounding lugs bonded to the frame allow connection to suitable earth grounds rods.

Framed for Durability
The hardened steel frame gives our portable generator cradles added strength and are a premium 1¼” thick, a full ¼” thicker in diameter than competitors' models. The addition of integrated brackets and impact resistant corners on most models gives contractors rugged options ideal for job site use.

Idle Control
Reduces noise and conserves fuel for extended run-times.

Integrated Lifting Eye
For easy transport and security on the job site.

Electric Start
Battery included, provides hassle-free start-up.

Emissions: EPA/49 State, not for sale to California

Includes: Wheel Kit, Battery, Battery Charge Cable, Preventative Maintenance Kit, Product Literature.

Product Specifications

Model Number 5734
Manufacturer Generac Power Systems
Made In USA Yes
Rated Watts 15kW
Surge Watts 22.5kW
Rated Amps 62.5
Surge Amps 93.8
Voltage 120/240V Single Phase
A/C Ton Rating 2 - 4 Ton
Enclosure None
UL Listed Yes
Starting System Electric
Low Oil Alert Low Oil Pressure Shutdown
Idle Control Yes
Receptacles 12V DC 1 – 10 Amp Battery Charger Input
1 – 20 Amp 5-20R GFCI Duplex
1 – 20 Amp 5-20 Duplex
2 – 30 Amp Amp L5-30 Twistlock
1 – 30 Amp L14-30R Twistlock
1 – 50 Amp 14-50R
Fuel Gauge Yes
Portability Kit Included
Hour Meter Yes
Product Weight 363 lbs
Dimensions (Inches) 48.5L x 30.75W x 39.5H
Engine Brand Generac OHVI
Engine Size 992 cc
Engine RPM 3600 RPM
Frequency 60 Hz
Auto Voltage Regulation Yes
Fuel Type Gasoline
Fuel Tank Material Resin
Fuel Tank Size 16 Gallons
Run Time (50% Load) 10 Hours
Warranty Information
Consumer Warranty 2 Years Limited
Commercial Warranty 1 Year Limited
Shipping Weight 430 lbs
Shipping Dimensions 36H x 50W x 25D
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Product Reviews

  1. Nice generator and fast service

    Posted by Alan L on 28th Oct 2014

    The generator was shipped promptly and received as described in the information. Set it up and runs smoothly. This generator is just the thing for temporary power when the power goes out. Cooking, lights, AC, water heater, etc. work fine.

  2. looks awesome and ready to work!

    Posted by Bill V on 7th Jan 2013

    Waited a while but finally got it! looks awesome and huge! can't wait to use it. 2 times the size i had. shipping was good and packaging was good! unpackaged it fueled and oiled it and presto started right up. again can't wait to use it. like a kid in a candy store! thanks!!

  3. Perfect generator

    Posted by Unknown on 26th Nov 2012

    this generator is amazing i used it during power outages and its so quiet and is so helpful

  4. huge generator but quite

    Posted by andrew m on 21st Jul 2012

    purchased generator 7\7\12 received 7\16\12 didnt get a chance to put together till 7\21 just got done putting tires and oil in. manual says oil level is full when oil is to threads on oil fill hole but i put 1qt in and checked still low added more checked still low sow put 2 qts in was still not up to threads but was over full had to drain some out. finally got everything kosher oil and gas in opened fuel shut off valve turned on idle controll pushed start button fired right up, let idle for a few minutes then turned idle controll off waiting to hear this loud engine but supprisingly is very quite. have not got to try it yet have to find electrician to hook up to house, reason for 4 stars is because of the oil ordeal overall great generator will post another rating when get to use.

  5. Power Outages - Not a worry anymore!

    Posted by Unknown on 1st Nov 2011

    Bought this generator after Hurricane Irene. Runs the entire house - well pump, furnace, 2 refrigerators, TV's, Dishwasher, Washer, Dryer, electric stove ... no problems. I am now the envy of my neighbors. I would recommend this to anyone who wants a quick and efficient reliable power source to get through their next power outage.

  6. No more powerfailures!

    Posted by Eric on 31st Oct 2011

    After Hurricane Irene, I was finally able to convince my wife we needed one of these- only issue- electric hot water heater, well pump, electric heat (but a woodstove takes care of that). We needed a generator that had a 50amp outlet. This was the "smaller" one.

    We just had our october snow storm w/ leaves still on the trees. It works! We had the majority of our house powered for almost 48 hrs. I thought it was going to be two more days, but this thing was awesome. Starts right up, even my wife thought it was easy.
    The extra oil filter, oil, air filter are a nice touch. UPS freight was a pleasure to work with and I was able to get the wheels on working by myself (with the help of some wooden blocks). It's big, really big, but it works.

  7. Great Generator!

    Posted by Shawn S on 18th May 2011

    I purchased this after going thru Hurricane Andrew. Never again- will we go without power! I have used this as my backup & have been thru three other hurricanes- this generator came thru with flying colors!
    Without a question- I recommend this generator!

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Shipping Terms

All generators include 24 hour delivery notification and residential delivery. Liftgate service is available on all air-cooled generators and some liquid cooled units – Please call for verification. Free Shipping is curbside service only. Curbside service means the freight company will deliver to your address and lower your generator to the ground. The freight company will not back down driveways, place a generator in a building or where it is being installed. You are responsible for arranging the movement and setting of the generator.

Some restrictions apply to "Free Shipping" you may either view our
Shipping Information page or contact us for details.