Generac GP17500E
Generac GP17500E is a portable generator from Generac, rated 17,500 running watts with 26,250 starting watts on gasoline, with 120/240V output.
| Type | portable |
|---|---|
| Fuel | gasoline |
| Running watts (gas / LP for standby) | 17500 W |
|---|---|
| Starting watts (gas) | 26250 W |
| Runtime at 50% load (gas) | 10 h |
|---|---|
| Fuel tank | 16 gal |
| Output voltage | 120/240V |
|---|---|
| Transfer-switch-ready outlet | 50 A |
| Start type | electric |
|---|
| Engine | Generac OHVI |
|---|---|
| Engine displacement | 992 cc |
| 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.
Compare the Generac GP17500E
Similar generators
- Westinghouse WGen14500DF ( 14,500 W running)
- DuroMax XP15000HX Dual Fuel ( 12,000 W running)
- Westinghouse WGen12000DF ( 12,000 W running)
- Westinghouse WGen11500TFc Tri-Fuel ( 11,500 W running)
- DuroMax XP13000EH Dual Fuel ( 10,500 W running)
- DuroMax XP13000HX Dual Fuel with CO Alert ( 10,500 W running)
Frequently asked questions
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.
Sources
- www.generac.com (retrieved 2026-07-23)