Portable Generator: What Size Do I Need? How Many Watts?

When the power goes out unexpectedly, a portable generator can be a lifesaver. Whether you’re preparing for emergencies, planning a camping trip, or powering tools on a remote job site, choosing the right size generator is critical. But with so many options available, how do you determine the best fit for your needs? Selecting the wrong wattage can lead to inefficient performance or even damage to your appliances. This article will guide you through the key considerations for determining the appropriate generator size and wattage requirements, ensuring that you have the power you need when it matters most.

Understanding Portable Generators

To determine the right generator size, calculate the total wattage of the devices you plan to power. Start by listing all the appliances and tools you need, then check their wattage requirements. Add up these wattages and include an additional 20-30% for a safety margin to account for power surges or extra demand. Most devices have their wattage or amperage labeled, making it easier to estimate. Choose a generator that meets or slightly exceeds this total wattage to ensure reliable performance.

What is a Portable Generator?

A portable generator is a compact, movable device designed to generate electricity, typically powered by gas, propane, or solar energy. It features an internal combustion engine that drives an alternator to produce electrical power. These generators are commonly used during power outages, outdoor activities, or at worksites to provide a reliable energy source for various devices and tools. Most portable generators range in power capacity from 1,000 watts to over 10,000 watts, making them suitable for powering anything from small appliances like refrigerators and fans to larger systems such as HVAC units.

Modern portable generators often come equipped with multiple outlets, fuel gauges, and safety features such as automatic low-oil shutdown to protect the engine. Additionally, some models now offer inverter technology, which ensures clean and stable electricity for sensitive electronics like laptops and smartphones. Portable generators are valued for their convenience, efficiency, and ability to deliver power during emergencies or when access to a traditional power grid is unavailable.

Types of Portable Generators

Portable generators come in various types, each tailored to specific needs and scenarios. Here are the main types , along with their highlights:

1. Conventional Portable Generators

These are the most common type of portable generators, powered by gasoline or diesel. They provide a steady flow of electricity, making them suitable for tools, home appliances, and essential devices during power outages. Conventional generators typically produce between 500 to 15,000 watts, depending on the model and size.

2. Inverter Generators

Known for their fuel efficiency and quiet operation, inverter generators use advanced electronic circuitry and a microprocessor to produce clean, stable electricity. This makes them ideal for sensitive electronics such as laptops, smartphones, and televisions. They generally range between 1,000 to 5,000 watts and are designed to be lightweight and portable.

3. Dual-Fuel Generators

These versatile machines can run on both gasoline and propane, giving users flexibility depending on fuel availability and convenience. Dual-fuel generators often include a switch to quickly alternate between fuel sources and are especially useful during extended power outages. Wattage typically varies from 3,000 to 12,000 watts.

4. Solar-Powered Generators

Eco-friendly and silent, solar-powered generators harness energy from the sun using solar panels. While their wattage output is generally lower (ranging between 500 to 2,000 watts), they are an excellent choice for camping and small electronic devices. They require sunlight for operation, making them reliant on weather conditions.

5. Standby Generators

While technically less portable, some larger “portable” units serve as mini-standby generators. With outputs exceeding 20,000 watts, these generators can power multiple household appliances and HVAC systems. They are often mounted on wheels but are relatively heavier compared to smaller portable types.

Each type of generator features distinct capabilities, and selecting the right one depends on the intended application, desired wattage output, and available fuel type.

Key Features of Portable Generators

1. Power Output

Portable generators come in a wide range of power outputs, from smaller models providing around 1,000 to 2,000 watts suitable for powering a few small appliances, to larger units delivering 10,000 to 20,000 watts capable of running HVAC systems, refrigerators, and more. Choosing the correct wattage is crucial based on your energy needs, ensuring efficiency and reliability.

2. Fuel Type and Efficiency

These generators typically run on gasoline, propane, or diesel. Gasoline is the most common fuel due to its wide availability, though it has a shorter shelf life. Propane burns cleaner and can be stored longer, while diesel generators offer high efficiency and durability, often used for heavy-duty purposes. New models are also increasingly compatible with dual-fuel or tri-fuel options, allowing flexibility in fuel sources.

3. Portability Features

Most portable generators are equipped with wheels and handles for ease of movement. The weight can range from as low as 25 pounds for ultra-compact models to over 300 pounds for high-capacity units, making portability a factor to consider based on the intended use.

4. Run Time

Depending on the generator’s tank size and fuel efficiency, run times vary significantly. Compact models may run for 6-8 hours on a full tank, while larger units can operate for up to 12-16 hours at 50% load. Some advanced models even feature eco-modes to adjust engine performance and extend run times.

5. Noise Levels

Noise levels for portable generators are typically measured in decibels (dB). Standard models range from 50-80 dB when running, with quieter inverter generators averaging at 50-65 dB—similar to the noise level of a normal conversation. Consider low-noise models for residential or camping use to minimize disturbances.

6. Safety Features

Modern portable generators prioritize user safety with features like automatic low-oil shutoff, overload protection, and Carbon Monoxide (CO) detection systems that can automatically shut down the generator if harmful emissions reach unsafe levels.

7. Control Panels and Connectivity

Many portable generators now come with digital control panels for accurate monitoring of voltage, frequency, and hours of operation. Some also offer wireless capabilities, such as Bluetooth or Wi-Fi, allowing users to remotely monitor and control the generator from a smartphone app.

8. Applications

Portable generators are highly versatile and can be used across various scenarios, including home backup power, camping, job sites, and recreational activities. Their adaptability makes them an indispensable tool in ensuring uninterrupted power when needed most.

Calculating the Right Size Generator

To calculate the right size generator, follow these steps:

1. Determine Your Power Needs

List all the devices and appliances you need to power and note their wattage requirements. Include starting wattage for items with motors, such as refrigerators or air conditioners, as these require more power to start.

2. Add Up the Total Wattage

Add the wattage of all the devices together. Ensure you account for starting wattage where applicable.

3. Choose a Generator with Sufficient Capacity

Select a generator that can handle at least the total wattage you calculated. Ideally, choose one with a slightly higher capacity for added flexibility and to avoid overloading.

By following these steps, you can ensure your generator meets your specific power requirements effectively.

Running Watts vs. Starting Watts

When selecting a generator, understanding the difference between running watts and starting watts is crucial. Running watts, also known as continuous watts, refer to the amount of power needed to keep devices running steadily. On the other hand, starting watts, sometimes called surge watts, are the additional power required to start certain appliances or devices, particularly those with electric motors, such as refrigerators, air conditioners, or power tools.

For example, a refrigerator may only need 200-800 running watts, but it can require 1,200-2,200 watts as starting power. Similarly, an air conditioner with a running wattage of 1,500 watts may need up to 3,000 starting watts. This distinction ensures that you choose a generator capable of delivering adequate power for both startup and regular operation without overloading.

Always check the manufacturer’s specifications on your devices to determine the exact wattage requirements. Combining these figures with your generator’s capacity ensures reliable and safe operation under all circumstances.

How to Calculate the Generator Size You Need

To calculate the generator size I need, I start by listing all the devices I plan to power and noting their wattage requirements, including both running and starting watts. Then, I add up the wattage of all devices while factoring in the highest starting wattage item, as it requires extra power at startup. This total tells me the generator size I need to safely and efficiently power all my devices.

Factors to Consider When Choosing a Generator Size

When selecting the appropriate generator size, several factors come into play to ensure efficiency and reliability. Here are key considerations:

1. Power Requirements for Devices

Identify all devices you intend to power, including their running and starting wattage. For instance, common household appliances like refrigerators may require around 700-1,200 running watts and up to 2,200 starting watts. Heating systems or air conditioners generally demand higher wattages, sometimes exceeding 3,000 watts. Summing these values ensures your generator can handle the total load.

2. Type of Generator

Portable generators typically range between 2,000 and 7,500 watts, suitable for essential devices like lights, refrigerators, and small tools. However, larger home standby generators, often rated between 10,000 and 20,000 watts, are better suited for powering entire homes or businesses seamlessly during extended outages.

3. Fuel Type and Efficiency

Consider whether the generator uses gasoline, diesel, liquid propane, or natural gas because fuel type significantly affects runtime and availability during emergencies. For example, diesel generators tend to offer better efficiency and longevity, making them ideal for heavy-duty applications.

4. Future Expansion Needs

If you anticipate adding more appliances or devices over time, select a generator with at least 20-30% additional capacity to accommodate future needs. This cushion prevents overloading and ensures flexibility for unexpected requirements.

5. Local Weather Conditions

Those living in areas with frequent storms or power outages must consider longer runtimes and higher wattage capacities to handle emergencies effectively. Additionally, in cold climates, ensure the generator has features like automatic temperature management systems for optimal performance during freezing conditions.

By evaluating these factors alongside your specific power needs, you can choose the right generator size to maintain safety and convenience in any situation.

Appliances You Can Power with a Portable Generator

A portable generator can power a variety of essential appliances, depending on its capacity. Common appliances include:

• Refrigerators and Freezers – Keep food and beverages cold during outages.
• Lights – Operate indoor and outdoor lighting for safety and visibility.
• Fans or Small Heaters – Provide comfort in extreme temperatures.
• Televisions and Chargers – Stay connected and entertained while powering phones, laptops, or tablets.
• Microwaves or Toasters – Prepare quick meals and snacks.
• Sump Pumps – Prevent flooding during power outages.

Always verify your generator’s wattage to ensure it can handle the total load of the appliances you need to power.

Essential Household Appliances

Below is a detailed list of essential household appliances, their typical wattage requirements, and their primary uses to help you better plan your generator usage:

Appliance	Typical Wattage	Primary Use
Refrigerator	600-800 watts	Keeps food fresh and prevents spoilage.
Freezer	500-700 watts	Ensures frozen food remains preserved.
Washing Machine	800-1200 watts	Cleans clothes efficiently.
Water Heater	3000-4500 watts	Provides warm water for daily needs.
Microwave Oven	800-1200 watts	Heats and prepares meals quickly.
Toaster/Oven	800-1500 watts	Useful for baking and toasting food.
Television	100-400 watts	Entertainment and staying informed on news.
Laptop Charger	50-100 watts	Powers work or study devices during outages.
Lighting (LED)	5-20 watts per bulb	Ensures safety and visibility at home.
Space Heater	1000-1500 watts	Provides warmth in colder climates.
Ceiling or Box Fan	50-100 watts	Helps circulate air for cooling comfort.
Sump Pump	1000-3000 watts	Prevents water damage during flooding.
AC Unit (Window)	500-1500 watts	Cools the house during hot weather.
Electric Kettle	1000-1500 watts	Boils water for hot drinks or food preparation.

By understanding the wattage and use case of each appliance, you can prioritize essential devices during power outages and ensure your generator operates efficiently without overloading. Always refer to the manufacturer’s guidelines for accurate specifications.

Powering Tools for Outdoor Use

When it comes to outdoor projects and activities, having the right tools and understanding their power requirements can make all the difference. Below is a list of common outdoor tools, their typical wattage range, and their primary use cases:

Tool	Typical Wattage	Primary Use
Lawn Mower (Electric)	700-1800 watts	Cutting grass and maintaining a tidy lawn.
Leaf Blower	500-1500 watts	Clearing leaves, debris, or grass clippings from driveways and yards.
Pressure Washer	1200-3000 watts	Cleaning outdoor surfaces such as patios, driveways, and siding.
Chainsaw (Electric)	1000-1800 watts	Cutting through wood for pruning, trimming, or chopping.
Hedge Trimmer	300-900 watts	Maintaining hedges and shrubs by trimming excess growth.
Circular Saw	1200-1800 watts	Cutting wood, metal, or other materials for construction or DIY projects.
Electric Drill	400-900 watts	Drilling holes or driving screws for building and installation tasks.
String Trimmer	400-1000 watts	Trimming edges of lawn areas and cutting overgrown grass or weeds.

Carefully selecting the right tools and ensuring your power supply, such as a generator, can handle their combined wattage, is crucial for smooth outdoor work. Always consult the manufacturer’s specifications to avoid equipment damage or overloading.

Using a Portable Generator for Recreational Activities

Portable generators can significantly enhance recreational activities such as camping, tailgating, or outdoor events by providing reliable power for various devices and appliances. When selecting a generator for recreational use, it’s essential to prioritize quiet operation and portability. For example, inverter generators are often preferred due to their lightweight designs and noise levels as low as 50-60 decibels, making them ideal for noise-sensitive environments.

The power requirements of common recreational devices may vary, so it’s crucial to calculate the total wattage needed. A small camping setup might include an LED light string (50 watts), a mini refrigerator (70-150 watts), and a phone charging station (10-30 watts per device). For more extensive setups, such as outdoor movie nights, additional wattage may be required for equipment like projectors (200-400 watts) and speakers (20-100 watts). Choosing a generator with a wattage output that exceeds your total power needs ensures smooth operation and helps maintain efficiency.

Additionally, many modern portable generators are equipped with features like USB ports, multiple AC outlets, and even Bluetooth connectivity for remote operation or monitoring fuel levels and usage. When operating a generator in recreational settings, always follow safety guidelines, such as maintaining proper ventilation, using a carbon monoxide detector, and keeping the device at a safe distance from living areas. These precautions ensure both enjoyment and safety during your outdoor activities.

Portable Generators for Power Outages

Portable generators are reliable tools for providing electricity during power outages. They can keep essential appliances running, such as refrigerators, heaters, lights, and medical devices. When selecting a generator for outages, ensure its wattage matches your power needs. Always operate it outdoors in a well-ventilated area to prevent carbon monoxide poisoning, and follow safety guidelines provided by the manufacturer. Regular maintenance and proper fuel storage are also key to ensuring the generator operates efficiently when needed.

Preparing for a Power Outage

When preparing for a power outage, I ensure I have a generator that meets my power needs and always operate it safely outdoors. I follow the manufacturer’s safety guidelines, perform regular maintenance, and store fuel properly to make sure it’s ready to use when needed.

Best Practices for Operating a Generator During an Outage

Operating a generator during a power outage requires adherence to safety protocols to protect both individuals and property. Always place the generator outdoors at least 20 feet away from windows, doors, and vents to prevent carbon monoxide poisoning. Use a long, heavy-duty extension cord rated for outdoor use to connect your appliances, ensuring it can handle the generator’s electrical output.

Before starting the generator, confirm it has enough fuel and check the oil level to prevent mechanical issues. According to energy safety data, running a generator for extended periods without proper monitoring or breaks can lead to overheating. To mitigate this, avoid overloading the generator by powering only essential appliances capable of running simultaneously within the unit’s wattage limit. For example, a typical refrigerator requires around 600-800 watts, while a space heater can use as much as 1,500 watts.

Additionally, install a battery-powered carbon monoxide detector inside your home as an extra precaution. When refueling during operation, turn off the generator and allow it to cool for several minutes to avoid fuel ignition. By following these best practices, you can ensure reliability and safety during an outage.

Safety Tips When Using a Portable Generator

1. Place the Generator Outdoors in a Well-Ventilated Area

Generators produce carbon monoxide, a colorless and odorless gas that can be deadly. Ensure the generator is positioned at least 20 feet from your home, with the exhaust directed away from any windows, doors, or ventilation systems to prevent toxic gas from entering your living space.

2. Keep the Generator Dry

To avoid the risk of electrical shock, operate the generator on a dry surface under an open, canopy-like structure. Avoid using it during wet or rainy conditions without adequate protection, as water exposure can damage the generator and create a hazardous environment.

3. Use the Correct Extension Cords

Ensure extension cords are rated for outdoor use and heavy-duty enough to carry the generator’s load without overheating. Look for cords with a wire gauge suitable for the power output to avoid damage or potential fire hazards.

4. Do Not Overload the Generator

Each generator has a maximum wattage rating to safely handle electrical loads. Using devices with a combined wattage exceeding the generator’s capacity can lead to overheating and equipment damage. Be mindful of your appliances’ energy requirements and connect devices one at a time to avoid overloading.

5. Shut Off the Generator Properly

Before refueling, always turn the generator off and allow it to cool for 15-20 minutes to reduce the risk of ignition from spilled fuel. Ensure you store gasoline in approved, sealed fuel containers in an area away from any living spaces to minimize fire hazards.

6. Regular Maintenance and Inspection

For reliable operation, follow the manufacturer’s maintenance schedule, which often includes oil changes, spark plug checks, and air filter cleaning. Inspect the generator for frayed cords, loose connections, or damage before each use.

7. Invest in a Transfer Switch

A professionally installed transfer switch can safely connect the generator to your home’s electrical system, preventing backfeeding, which can endanger utility workers and damage appliances. Transfer switches are especially important when powering essential systems such as HVAC units.

Employing these safety protocols will not only extend the lifespan of your generator but also ensure your household remains safe during unexpected outages.

Maximizing the Efficiency of Your Portable Generator

To maximize the efficiency of your portable generator, follow these key steps:

1. Perform Regular Maintenance – Keep the generator clean, change the oil as recommended, and replace air filters when needed. Proper maintenance ensures optimal performance.
2. Use the Correct Fuel – Always use the fuel type specified by the manufacturer and store it properly to prevent degradation. Fresh fuel enhances efficiency and prevents engine issues.
3. Avoid Overloading – Match the generator’s capacity with your power needs. Running too many appliances can strain the generator and reduce its lifespan.
4. Operate in Recommended Conditions – Place the generator on a level surface in a well-ventilated area, avoiding exposure to extreme weather. Proper operation improves fuel efficiency and safety.
5. Turn Off Unused Appliances – Disconnect devices you are not using to conserve fuel and reduce overall load on the generator.

These simple practices will help you get the most out of your portable generator while ensuring safety and reliability.

Maintaining Your Generator

Proper maintenance of your generator is essential for ensuring long-term functionality and efficiency. Here are some detailed steps and data to help maintain your generator effectively:

1. Regular Filter Checks and Replacement

Air filters play a critical role in preventing dirt and debris from entering the engine. It is recommended to inspect the air filter every 50 hours of operation or more frequently in dusty environments. A clogged air filter can reduce performance and increase fuel consumption by up to 15%.

2. Oil Changes

Changing the generator’s oil regularly is essential for smooth engine performance. Most generator manufacturers recommend changing the oil after 20-30 hours of initial use, then every 100 hours of operation or annually, depending on usage. Using high-quality engine oil, such as SAE 10W-30, can extend the life of the generator.

3. Spark Plug Maintenance

Inspect spark plugs after every 100 hours of use. Worn or dirty spark plugs can cause starting issues and reduce performance. Cleaning or replacing spark plugs ensures smooth ignition and efficient fuel combustion.

4. Fuel Considerations

Use fresh, clean fuel to avoid clogging the generator’s carburetor. Stale fuel can lead to starting problems and damage internal components. Adding a fuel stabilizer can extend the shelf life of gasoline for up to 12 months, ensuring reliable performance.

5. Battery Care

For generators with an electric start, the battery should be inspected and charged regularly. It’s recommended to check the battery voltage and condition every few months, as a weak battery can fail during essential usage.

6. Scheduled Professional Servicing

Even with regular maintenance, scheduling professional servicing once a year or after every 200-300 hours of operation is advisable. Certified technicians can conduct a comprehensive inspection and address any underlying issues to prevent breakdowns.

By adhering to these guidelines, you can maximize the performance, safety, and durability of your generator while maintaining operational reliability during critical times.

Optimizing Fuel Usage

Efficient fuel usage is crucial for prolonging generator life and reducing operating costs. To optimize fuel consumption, several strategies can be implemented:

1. Choose the Right Generator Size

Using a generator that matches your power requirements ensures it operates efficiently. Running an oversized generator at a low load can lead to wasted fuel, while overloading a small generator can strain the system and increase fuel consumption.

2. Monitor and Adjust Load Levels

Generators operate most efficiently at around 50-75% of their maximum load capacity. Consistently overloading or underloading your generator can result in inefficient fuel use and more wear and tear. Using a load management system can help maintain an optimal balance.

3. Use High-Quality Fuel

Opt for clean, high-grade fuel to ensure smoother operation and fewer impurities. Poor-quality fuel can clog components over time, leading to higher fuel demands and increased costs for maintenance.

4. Practice Timely Maintenance

Regularly replacing air filters, spark plugs, and fuel filters is essential for maintaining fuel efficiency. Well-maintained generators run smoother and consume less fuel compared to units with worn-out parts or obstructions.

5. Upgrade to Fuel-Efficient Technology

Modern generators with advanced fuel injection systems or inverter technology consume significantly less fuel compared to older models. For example, inverter generators are up to 20-40% more fuel-efficient than traditional ones, making them an excellent option for long-term savings.

6. Minimize Idle Time

Avoid running the generator when it is not actively powering appliances or equipment. Prolonged idle times waste fuel and add unnecessary operational hours.

By implementing these strategies, you can ensure your generator operates at peak efficiency, saving fuel and minimizing environmental impact while maintaining reliable power when it is needed most.

Understanding Generator Power Ratings

Generator power ratings are crucial for determining the capacity and suitability of a generator for specific applications. These ratings are typically expressed in kilowatts (kW) or kilovolt-amperes (kVA), measuring the generator’s ability to provide power under certain conditions. It’s important to understand the distinction between two key ratings: standby power and continuous power.

1. Standby Power Rating

This indicates the generator’s capacity to provide electricity during an emergency or outage. For example, a residential standby generator might have a rating of 20 kW, which is sufficient to power essential household appliances, HVAC systems, and lighting. However, standby power is not designed for prolonged, uninterrupted use.

2. Continuous Power Rating

Continuous power refers to the generator’s capability to provide consistent power over extended periods, often used for industrial or remote operations. A generator with a 100 kVA rating, for instance, could reliably power heavy equipment at a construction site continuously.

3. Load Calculations

To choose the right generator, understanding the total load requirement is essential. For residential use, an average household may use between 5-20 kW, depending on the number of appliances and their power consumption. For commercial or industrial settings, power demands can range from 50 kW to several megawatts, depending on the size and type of operations. Accurately calculating the load ensures you select a generator that can handle peak demands without overloading or underperforming.

4. Power Factor (PF)

Many generator ratings account for the power factor, often set at 0.8 for industrial machines. This reflects the efficiency of power usage in a system, where a lower power factor can reduce the real power available. For example, a 100 kVA generator with a power factor of 0.8 provides 80 kW of usable output.

By understanding these ratings and the specific requirements of your application, you can ensure optimal generator performance and avoid issues associated with underpowered or overpowered equipment.

Reference Sources

1. Portable Generators are Great Tools, but Use them Safely! – Purdue University
   This resource provides an overview of portable generators, their uses, and safety considerations.

2. 5 Mobile Generator Tips – American Council on Education
   A guide discussing fuel types and operational tips for portable generators.

3. Portable Generator Safety – University of Nebraska Medical Center
   A detailed document on safe usage and fuel management for portable generators.

4. Portable Generators: Know Watt’s Right And Wrong – University of Florida IFAS
   This article explains wattage requirements for running household appliances with portable generators.

Frequently Asked Questions (FAQs)

What appliances can a portable generator power?

A portable generator can power a variety of appliances, including refrigerators, microwaves, and lights. Depending on the wattage, you can also run multiple heavy-duty appliances like air conditioners or power tools. It’s essential to know the total wattage you need to ensure the generator is enough to power these devices.

How do I determine the size generator I need?

To determine the size generator you need, calculate the total wattage of the appliances you want to power. Look for the starting watts and running watts of each device to ensure that the generator you choose can handle the load.

Can a portable generator run my whole house?

A portable generator might not be able to power your entire house, especially if you have high-demand appliances. However, you can connect your generator to power essential circuits or specific appliances during brief power outages. For whole-house power, consider a larger generator or a standby generator system.

What is the difference between starting watts and running watts?

The starting watt is the initial surge of power needed to start an appliance, while the running watt is the power required to keep it running. You’ll need to account for both when calculating the total wattage you need from your generator.

Can I use a solar generator instead of a portable generator?

Yes, a solar generator can be an excellent alternative to a portable generator, especially for eco-conscious users. However, consider the amount of power you need and whether a solar generator can provide enough energy for the devices you want to power, as their output may vary based on sunlight availability.

What do I need to run my AC on a portable generator?

To run your AC on a portable generator, you’ll need to ensure that the generator has enough wattage to handle the starting and running watts of the unit. Additionally, a transfer switch might be necessary to safely connect your generator to your power lines outside your home.

What can’t I run on a portable generator?

While portable generators can handle many appliances, there are limitations. You can’t run items that require a higher surge of power than the generator can provide, such as large electric water heaters or certain industrial machinery. Always check the specifications of your generator and the appliances you want to run.

How do I connect my generator to power my home?

To connect your generator to power your home, you will need a transfer switch to safely switch between utility power and generator power. This ensures that power is not fed back into the grid, which could be dangerous for utility workers. Always follow local regulations and guidelines when setting up a generator system.

What is a portable power station?

A portable power station is a compact device that stores electrical energy for later use. Unlike traditional generators, they often use batteries and can be charged via solar panels or wall outlets. They are useful for powering small devices and appliances, especially in off-grid situations.