Generac GP17500E is a portable generator from Generac, rated 17,500 running watts with 26,250 starting watts on gasoline, with 120/240V output.
General
Type
portable
Fuel
gasoline
Power output
Running watts (gas / LP for standby)
17500 W
Starting watts (gas)
26250 W
Performance
Runtime at 50% load (gas)
10 h
Fuel tank
16 gal
Electrical
Output voltage
120/240V
Transfer-switch-ready outlet
50 A
Features
Start type
electric
Engine
Engine
Generac OHVI
Engine displacement
992 cc
Physical
Weight
390 lb
What the numbers mean
At 17,500 running watts
on its best fuel, this unit is sized for whole-house coverage on a typical 200 A home, subject to a load calculation by a licensed electrician.
Runtime: 10 h at 50% load on the 16-gallon tank
— roughly 16 h at 25% load (estimated)
.
Estimated fuel cost for 24 h at ~50% load: about $123 on gasoline at
national average prices (assumptions).
House hookup: pairs with a 50 A generator inlet (
14-50 / CS6365) and a transfer switch or interlock
installed by an electrician.
What can the Generac GP17500E run during an outage?
With 17,500 running watts on its best fuel, the Generac GP17500E is sized for whole-house coverage on a typical 200 A home, subject to a load calculation by a licensed electrician. Add up your actual loads with a sizing worksheet — the bands here are rough guidance, not a load calculation.
How long does the Generac GP17500E run on a tank of gas?
About 10 hours at 50% load on its 16-gallon tank, per the manufacturer's rating. At a lighter 25% load, figure roughly 16 hours (estimated — fuel burn does not scale linearly with load).
What does the Generac GP17500E cost to run for a day?
Roughly $123 for 24 hours of continuous operation at about 50% load on gasoline, at national average fuel prices. The assumptions behind this estimate are documented on the methodology page; your fuel price and load change the figure.
What inlet does the Generac GP17500E need to power a house?
A 50 A generator inlet (a 14-50 or CS6365 connection) wired to a transfer switch or interlock kit — an electrician's job that normally requires a permit. Never backfeed through a dryer or wall outlet.
