Generac GP8000E with COsense (model 7715)

Generac presents the GP8000E as “a favorite for emergency power or recreational use”. This card is model 7715 (variant G0077151), the 49-state/CSA configuration with COsense. The same GP8000E name is also used for model 7676 (50 state), a corded version, model 8929 and older units without COsense; recall coverage differs by model number, so read the label on your unit. It runs on gasoline only; the web spec table's “Fuel Type: Gaseous” is an error.

Running vs starting watts

Generac rates it at 8,000 running and 10,000 starting watts. The starting figure lasts only while a motor starts; continuous loads must fit under 8,000 W. Generac's page gives two different percentages for the extra starting capacity of its PowerRush technology; we use the spec table's 10,000 W. On its own it can start a 1/2 HP well pump, a 13,500 BTU RV air conditioner or a 7-1/4 in circular saw.

Run time

The spec table and brochure give 10 hours at 50 % load on the 7.9-gallon tank; the page description says “up to 11 hour run-time at 50% load”. We use the 10-hour figure and do not extrapolate to other loads. It is a conventional generator, not an inverter; Generac gives no harmonic-distortion figure, so check the owner's manual before connecting sensitive electronics.

Safety and recall check

COsense (“Stops. Alerts. Saves.”) reduces the risk but does not make indoor, garage or porch use safe: CPSC's outdoor-only rule applies.

CPSC recall 26-407 (April 16, 2026) covers GP8000E models G0077150, G0076754 and G0081540 in a limited serial range: fuel can leak from the carburetor when the tank is first filled. G0077151, the variant on this card, is not listed. The model and serial number are on a label on the side of the unit; check them on Generac's recall page before use. An earlier handle recall (CPSC 23-040) also names the GP8000E; the model numbers it lists are not 7715.

Add your appliances to the calculator to check your own load against these figures.