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Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • NorthStar c15000s
  • Ryobi RY909500
  • Model c15000s
    Model c15000s

    NorthStar 13,500W Gas Generator

    13500W
    Running
    73 dB
    Noise
    View details
  • Model RY909500
    Model RY909500

    Ryobi 8,000W Gas Generator

    8000W
    Running
    85 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationNorthStar c15000sRyobi RY909500
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 13500 W
8000 W
Starting watts
Winner: Winner: 15000 W
9500 W
Noise (lower limit)
Winner: Winner: 73 dB
85 dB
Weight
390 lbs
Winner: Winner: 198 lbs
Run time @50% load
Winner: Winner: 10.6 h
7.5 h
Run time @25% load
Not available
Not available
Fuel tank
12 gal
6 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
43 x 36 x 35
31 x 29 x 24
Electrical
Voltage (AC)
120/240V 60 Hz
120/240
Voltage (DC)
Not available
Not available
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
<5% %
<20% %
Engine
Engine
688 cc Honda GX690 OHV V-Twin
500 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Electric
Recoil
Warranty
Warranty
4 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
13500 W
8000 W
Starting watts
15000 W
9500 W
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
10.6 h
7.5 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
false
Compliance
CARB, EPA
EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
Bonded to frame
UPC
840321737861
46396058553
Core / High-priority specs
Running Watts (Gasoline)
13500
8000
Starting Watts (Gasoline)
15000
9500
Runtime @ 50% Load (Gasoline)
10.6
7.5
AC Outlet Types
3x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R)1x 120/240V 60A (14-60R)
2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Honda GX690 OHV V-Twin
500 cc OHV 4-stroke
Engine Displacement
688
500
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
10.6
7.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Included Accessories
Funnel, battery, and wheel kit
Oil and wheel kit
Warranty & identification
Commercial Warranty
4
3
Additional specs
Summary
The NorthStar c15000s is a commercial-grade portable generator powered by a Honda GX690 OHV engine, delivering 15,000 surge watts and 13,500 rated watts. It features Quiet Armor Technology for reduced noise, a built-in battery charger/maintainer, and carbon monoxide detection with automatic shutdown for enhanced safety.
The Ryobi RY909500 is a 9500W Portable Gas Generator featuring a 500cc OHV engine, delivering 8000 running watts and 9500 starting watts. It offers a 7.5-hour runtime at 50% load, making it ideal for storm backup and jobsite use.
  • Most Powerful
    NorthStar c15000s
    13500W running
  • Quietest
    NorthStar c15000s
    73 dB
  • Longest Runtime
    NorthStar c15000s
    10.6h at 50% load
Where to buy
Prices can change. We update these automatically.
NorthStar c15000s
Store links
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Ryobi RY909500
Store links
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