Generators are essential devices that convert mechanical or chemical energy into electrical power. They serve the critical function of delivering reliable, portable energy when and where it’s needed most. The main components of a typical generator include an engine, alternator, fuel system, voltage regulator, cooling system, exhaust system, and lubrication system. These elements work together to capture the power of motion from an external source and transform it into usable electricity by forcing electrons through an electrical circuit.
Whether used as a backup power supply during outages or to provide electricity in remote locations, generators enable a wide range of applications across industries and settings. In the following sections, we’ll explore how generators operate, the different types available, key features and components, and the many uses of these versatile energy-producing machines. Understanding generator basics helps ensure you select the right model and properly operate it to harness electricity safely and efficiently.
Our Top Picks For 2025
Westinghouse WGen9500DF Portable Generator
The Westinghouse WGen9500DF is a powerful and versatile portable generator that can provide backup power during outages. It is dual fuel, running on either gasoline or propane, and puts out 9500 watts of power.
The Westinghouse WGen9500DF portable generator is an excellent choice for home backup power. This rugged, dependable generator provides 9500 running watts and 12500 starting watts, enough power to keep your essential appliances running during an outage. Key features include:
- Dual Fuel Capability: The WGen9500DF can run on either gasoline or propane, providing flexibility in fuel choice. Switching between fuels is easy with the turn of a dial.
- Electric and Remote Start: Starting the generator is easy with the push button electric start. It also comes with a remote start key fob to start/stop from up to 260 feet away.
- Transfer Switch Ready: The generator has a L14-30R outlet to connect to a transfer switch, allowing you to power essential household circuits.
- Powerful 457cc Westinghouse OHV Engine: The durable, air-cooled engine provides reliable power output and has automatic low oil shutdown.
- Multiple Output Options: Along with the transfer switch outlet, it has 4 120V household outlets, an RV-ready outlet, and digital controls.
With its strong performance, dual fuel capability, and convenient electric/remote start, the Westinghouse WGen9500DF generator is an excellent choice for home backup power during outages.
Westinghouse WGen3600v Portable Generator
The Westinghouse WGen3600v is a 3600 watt portable gas generator that provides reliable power for RVs, emergency home backup, and worksites. With 4650 peak watts, it can handle most RV accessories and home essentials during outages.
The Westinghouse WGen3600v portable generator delivers dependable power for recreational vehicles, home backup, and job sites. This gas-powered generator provides 3600 running watts and 4650 peak watts, enabling it to handle most RV accessories and home essentials during power outages.
Key Features and Benefits:
- RV Ready 30A Outlets: Features one 120V TT-30R 30A outlet and one 120V L5-30R 30A outlet to power RVs, toy haulers, and travel trailers.
- Durable Steel Frame: The sturdy steel frame fully protects the engine, fuel tank, and alternator.
- Automatic Low Oil Shutoff: Shuts down engine automatically when low oil is detected to prevent damage.
- 212cc Westinghouse OHV Engine: The air-cooled, fuel-efficient engine provides reliable power and long service life.
- Rugged Outlet Covers: Rubber covers protect outlets from moisture and debris when not in use.
With its versatile power output, rugged construction, and safety features, the Westinghouse WGen3600v portable generator is ideal for RVs, emergency home backup, worksites, and outdoor activities.
WEN DF475T 4750-Watt Dual Fuel Portable Generator with Electric Start
The WEN DF475T is a robust and versatile 4750-watt dual fuel portable generator that can run on gasoline or propane. Features electric start for easy start-up. Provides 120V and 240V power for home backup, jobsite, RV and outdoor use.
The WEN DF475T 4750-watt dual fuel portable generator is a powerful and reliable generator for emergency home backup power, RV use, jobsite and outdoor applications. This generator features a 4-stroke OHV engine and convenient electric start via battery and key switch. It can run on gasoline for 4750 starting watts and 3800 running watts, or on propane for 4350 starting watts and 3500 running watts.
Key Features:
- Dual Fuel Operation – Runs on gasoline or propane for flexible fueling
- 4750 starting watts and 3800 running watts on gasoline
- 4350 starting watts and 3500 running watts on propane
- 120V and 240V power output
- Electric start via battery and switch for easy start-up
- 4-gallon fuel tank provides up to 11 hours runtime
- Digital display shows voltage, hertz and runtime hours
- CARB compliant for California use
- Includes wheel kit and fold-down handles for portability
The WEN DF475T portable generator provides reliable power for home, RV, jobsite and outdoor use. Its electric start and dual fuel capability make it very convenient to operate. An excellent choice for a mid-sized portable generator.
DuroMax XP12000EH Dual Fuel Portable Generator
The DuroMax XP12000EH is a powerful, dual fuel portable generator that provides 12,000 starting watts and 9,500 running watts. It can run on gasoline or propane, giving you fuel flexibility. The XP12000EH features electric start and is designed for home backup power and RV use.
The DuroMax XP12000EH Dual Fuel Portable Generator packs plenty of power in a portable package. This rugged unit provides 12,000 starting watts and 9,500 running watts, making it capable of handling heavy loads with ease. Key features and benefits of the XP12000EH generator include:
- Dual Fuel Technology: Operates on gasoline or propane, allowing flexibility in fuel choice based on availability and cost. Propane operation provides for cleaner power output as well.
- Powerful 457cc DuroMax Engine: Commercial grade engine provides reliable power even under heavy loads.
- Electric Start: Starts easily with the turn of a key, no pull cords needed. Battery included.
- Full Power Panel: Includes a wide selection of outlets including four 120V household outlets, one 120/240V 30A twist lock outlet, and a heavy-duty 120/240V 50A outlet.
- Portable Design: Weighing in at 224 lbs, the XP12000EH can be moved as needed with its included wheel kit.
- CARB Compliant: Meets emissions regulations in all 50 states.
The DuroMax XP12000EH combines robust power and portability, making it an excellent choice for home backup, RV use, job sites, and outdoor events requiring reliable electricity.
WEN DF1100T 11,000-Watt Dual Fuel Portable Generator
The WEN DF1100T is a powerful, dual fuel portable generator that runs on gasoline or propane. It provides 11,000 surge watts and 8,300 running watts on gasoline and 9,500 surge watts and 7,500 running watts on propane. Features electric start and a 6.6 gallon fuel tank.
The WEN DF1100T 11,000-Watt Dual Fuel Portable Generator is an ideal backup power solution for home, work, or play. This versatile generator can run on either gasoline or propane fuel, providing reliable power whenever and wherever you need it.
Key Features and Benefits:
- Dual Fuel Operation – Runs on gasoline or propane fuel for maximum flexibility. Gasoline provides 11,000 surge watts and 8,300 running watts. Propane provides 9,500 surge watts and 7,500 running watts.
- Powerful 457cc OHV 4-Stroke Engine – Strong, reliable engine delivers excellent performance.
- Electric Start – Starts easily with the turn of a key, no pull cords needed.
- 6.6 Gallon Fuel Tank – Provides up to 8.5 hours of run time at 50% load when running on gasoline.
- Voltage Selector Switch – Easily switch between 120V and 240V power output.
- Digital Hour Meter – Tracks maintenance intervals and total engine run time.
- Portable Design – NeverFlat wheels and folding handle kit allow for convenient transport and storage.
The WEN DF1100T packs professional power into a portable package. With its ample power output, dual fuel capability, and user-friendly design, this generator is ideal for home backup, job sites, camping, and more.
Westinghouse WGen6000 Portable Generator
The Westinghouse WGen6000 is a reliable and powerful 6000 watt portable generator. This gas-powered unit provides 7500 watts of peak power and features electric start capability and a 6.6 gallon fuel tank.
The Westinghouse WGen6000 portable generator delivers dependable power for home backup, jobsite, or recreational use. This generator provides 6000 running watts and 7500 peak watts, making it capable of powering a wide range of appliances, tools, and electronics. Key features of this unit include:
Key Features:
- Powerful 420cc Westinghouse OHV engine provides maximum fuel efficiency and durability
- Electric start with recoil backup for easy and reliable starting
- 6.6 gallon fuel tank provides up to 13 hours of run time at 25% load
- Two 120V household outlets, one 120V/240V outlet, and 12V DC outlet give you power options
- Digital controls with low oil shutdown help prevent engine damage
- Heavy-duty steel frame and never-flat wheels allow for easy transport and setup
- Meets EPA and CARB emission standards for use anywhere in the US
With its strong performance, versatile power options, and durable construction, the Westinghouse WGen6000 generator is an excellent choice for portable power during outages or at worksites and campsites. This generator provides reliable electricity when you need it most.
BILT HARD 2500 Watt Quiet Inverter Generator
The BILT HARD 2500 watt quiet inverter generator is a portable, gasoline-powered generator that provides 2500 starting watts and 2000 running watts of clean, stable power from its 80cc 4-stroke OHV engine. Its inverter technology produces less than 3% THD for safely running sensitive electronics. The BILT HARD generator operates at a quiet 65 dB and has a 1.37 gallon fuel tank for up to 13 hours of runtime.
The BILT HARD 2500 Watt Quiet Inverter Generator is an ideal portable power solution for camping, RVing, home backup, and job sites. This inverter generator produces 2500 starting watts and 2000 running watts, providing plenty of power to run appliances, tools, and electronics. Key features and benefits include:
- Inverter Technology – Generates clean electricity with less than 3% Total Harmonic Distortion (THD), safe for sensitive electronics.
- Quiet Operation – Noise level of just 65 dB for campground-friendly performance.
- Fuel Efficient 80cc Engine – 1.37 gallon fuel tank provides up to 13 hours of run time at 25% load.
- Parallel Capable – Connect two units for double the power.
- Portable and Compact – Weighing just 42.8 lbs with a suitcase-style handle for easy transport and storage.
The BILT HARD 2500 watt inverter generator is perfect for anyone who needs reliable, quiet, and portable AC power. Its advanced inverter technology provides stable, clean electricity for powering a wide range of devices and appliances, making it an excellent choice for RVing, camping, emergency backup power, and jobsites.
DuroStar DS4000S 4000-Watt Gas Powered Portable Generator
The DuroStar DS4000S is a reliable 4000-watt portable gas generator that provides emergency backup power for home, outdoor, and worksite use. With a powerful 208cc engine, it can run lights, appliances, power tools, and more.
The DuroStar DS4000S 4000-Watt Gas Powered Portable Generator is an ideal backup power source for your home or jobsite. This rugged, yellow and black generator delivers 4000 starting watts and 3300 running watts, providing plenty of power to keep your essentials running during an outage. Powered by a durable 208cc DuroStar OHV engine, it can handle heavy loads from lights and a refrigerator to high-amp power tools.
Key Features:
- Powerful 208cc DuroStar OHV engine provides 4000 starting watts and 3300 running watts
- Can power high-draw appliances like refrigerators, freezers, and air conditioners
- 120V household outlets plus a 120V 30A twist lock outlet for versatility
- Low oil shutoff protects the engine from damage
- EPA and CARB compliant for minimal emissions
- Weighs 94 lbs for portability with optional wheel kit available
- Gas powered with 3.96 gallon tank capacity, runs up to 8 hours at 50% load
- Backed by a 3-year manufacturer’s warranty for peace of mind
With its strong power output, versatile connectivity, and reliable performance, the DuroStar DS4000S gas powered portable generator is an excellent source of backup power for homes and worksites. Its rugged design provides emergency power when you need it most.
NEXPOW 2250W Super Quiet Portable Inverter Generator
The NEXPOW 2250W portable inverter generator is an ultra-quiet, lightweight and fuel efficient generator ideal for backup power at home, camping, RV trips and outdoor events.
The NEXPOW 2250W Super Quiet Portable Inverter Generator is perfect for anyone looking for a reliable, versatile and compact generator option. This EPA-certified generator provides 2250 watts of starting power and 1800 watts of rated power, making it suitable for lighting, appliances and electronics. Key features include:
- Ultra-Quiet Operation: Advanced muffler system keeps noise levels at just 58dB, about as loud as a normal conversation. Allows operation without disturbing others.
- Lightweight and Portable: Weighing only 39.7 lbs with a built-in carry handle, this generator is easy to move and transport for use anywhere.
- Fuel Efficient: Eco Mode extends runtime up to 11 hours at 25% load. Great for longer power outages.
- Parallel Capability: Connect two units together to double your power output.
- Additional Features: CO sensor for safety, USB charging port, low oil shutdown to prevent damage.
With its quiet operation, portability and versatility, the NEXPOW 2250W Inverter Generator is a great choice for portable power during outages, outdoor events and recreational activities.
WEN 56235i Portable Inverter Generator
The WEN 56235i is a quiet, lightweight, and fuel-efficient 2350-watt portable inverter generator. It produces clean power safe for sensitive electronics and includes features like fuel shutoff and eco mode.
The WEN 56235i portable inverter generator is a great choice for portable power needs. This ultra-lightweight generator weighs only 39 lbs but packs 2350 starting watts and 1900 running watts of clean, safe power for electronics. Key features include:
- Extremely quiet operation at only 51 dB, comparable to normal conversation
- Produces clean sine wave power with less than 1.2% THD, safe for phones, laptops, TVs, etc.
- Fuel shutoff feature helps prevent carburetor issues and prolong engine life
- Eco mode adjusts fuel consumption to save gas when not operating at full load
- Weighs only 39 lbs for easy portability and storage
- Includes (2) 120V outlets, (1) 12V DC outlet, and (2) 5V USB ports
With its lightweight design, quiet operation, and useful features like fuel shutoff and eco mode, the WEN 56235i portable inverter generator is a great choice for clean, safe power on the go. Its 1900 watts running power can handle essentials like lights, fridge, and fans to keep you powered up in emergencies or off-grid adventures.
