top of page
SKU: G0089390

Generac GP20000E Portable Generator, 20,000W Running, 120/240V, Electric Start

$2,892.69Price
Quantity

The Generac GP20000E is a commercial-grade portable generator rated at 20,000 running watts and 22,500 starting watts at 120/240V, built for demanding backup duty, big equipment loads, farm and jobsite work, and emergency power for a whole home. Its fuel-efficient OHV engine displaces 817cc and uses electronic fuel injection, and the 14.2-gallon tank gives a runtime of up to 7.75 hours at 50% load.

Advanced electronic controls hold total harmonic distortion under 5%, so the generator can run sensitive electronics and appliances. Electric start uses the included battery, COsense carbon monoxide protection and low-oil pressure shutdown add safety, and an hour meter tracks maintenance. The tank has a built-in fuel gauge, and the unit is HomeLink transfer switch compatible.

Outlets include two 120V 20A GFCI duplex receptacles (5-20R), a 120V 30A twist-lock (L5-30R), a 120/240V 30A twist-lock (L14-30R) and a 120/240V 50A receptacle (14-50R). A hardened steel frame with a 1-1/4 in steel tube cradle, a handle that folds and locks, and never-flat 12-inch wheels make the 444 lb generator easier to move to where power is needed.

Highlights

  • 20,000 running watts and 22,500 starting watts at 120/240 V

  • 817cc OHV engine with electronic fuel injection and electric start

  • 14.2-gallon tank: runs up to 7.75 hours at 50% load

  • Total harmonic distortion under 5% for sensitive electronics

  • Outlets: two 5-20R GFCI duplex, L5-30R, L14-30R and 14-50R

  • 444 lbs; handle folds and locks; 12-inch never-flat wheels

Specifications

Brand

Generac

Manufacturer part number

G0089390

Running watts

20,000 W

Starting watts

22,500 W

Voltage

120/240 V

Frequency

60 Hz

Engine

817cc OHV with EFI

Fuel tank capacity

14.2 gallons

Runtime at 50% load

Up to 7.75 hours

Starting method

Electric start, battery included

Unit weight

444 lbs

Total harmonic distortion

Less than 5%

Outlets

(2) 120 V 20 A GFCI duplex (5-20R); (1) 120 V 30 A twist-lock (L5-30R); (1) 120/240 V 30 A twist-lock (L14-30R); (1) 120/240 V 50 A receptacle (14-50R)

Wheels

12 in never-flat

Protection

COsense carbon monoxide protection; low-oil pressure shutdown

Maintenance

Hour meter

What's in the box

  • Battery for electric start

Good to know

  • Engine-driven equipment gives off carbon monoxide: run it outdoors only, away from doors, windows and vents.

    bottom of page