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Solar Generator Basic: A Full Guide with Advices


Solar generators are steadily gaining popularity as a clean and renewable source of energy, especially in a world increasingly concerned about climate change and sustainability.

While their eco-friendly nature is a big selling point, so too is their utility during power outages and in off-grid locations.

However, it’s important to note that these benefits come with a cost.

The initial investment for a solar generator can vary widely, ranging from a few hundred to several thousand dollars, depending on its capacity and features.

In this article, we’ll explore the mechanics of solar generators, evaluate their advantages and disadvantages, why solar generators are becoming the go-to choice for many, and break down the costs you can expect when investing in one.

Table of Contents

What Is Solar Generator?

A solar generator is a portable, all-in-one system designed to capture, store, and distribute solar energy.

Ideal for camping, RV trips, boating, and emergency backup power, solar generators are distinct from traditional fuel-powered generators as they have no moving parts.

They consist of four main components:

  1. Solar Panels – These capture energy from the sun.
  2. Rechargeable Solar Battery – This stores the captured solar energy.
  3. Solar Charge Controller – This regulates the flow of energy into the battery.
  4. Solar Inverter – This converts stored energy into usable electricity.

Solar generators usually come with a range of outlets, including 12-volt sockets, AC outlets, and USB ports, allowing you to charge or power various devices based on your needs.

For instance, you could charge your smartphone via the USB port while using an AC outlet to power string lights.

You can purchase solar generators as complete kits or buy individual components like the battery and panels separately, depending on your requirements.

This allows you to tailor the system to produce and store sufficient electricity for your specific needs.

Useful Resources:

How Do Solar Generators Work?

Solar generators harness sunlight and convert it into electrical power, offering a portable or stationary solution for obtaining electricity in areas without access to the grid or during power outages.

This system typically includes solar panels, a charge controller, solar batteries, and an inverter.

The solar panels collect sunlight and convert it into direct current (DC) electricity.

The charge controller manages this electricity to safely charge the batteries.

The stored energy in the batteries can then be used as needed, and the inverter converts the DC electricity from the batteries into alternating current (AC) electricity, which is the standard form used by most household appliances and devices.

Unlike traditional generators that run on fuels like gasoline or diesel, solar generators harness the sun’s renewable energy, making them an eco-friendly and sustainable power solution.

Solar generator applications include but are not limited to backup power, outdoor activities, or areas without access to the electrical grid.

Types of Solar Generators

There are three types of solar generators:

Solar Backup Generators: Solar backup generators are permanently set up and connected to your home’s electrical panel.

They activate automatically during power outages, supplying backup electricity as long as there’s sunlight.

Portable Solar Generators: Known as solar portable generators use batteries charged by solar panels, ideal for leisure travels or RV trips.

Hybrid Solar Generator: Combining traditional generators with controllable power sources, this eco-friendly and fuel-efficient generator is favored in areas with limited access to conventional fuels like petrol, LPG, or diesel.

Pros & Cons of Solar Generators


One of the most compelling advantages of solar generators is their environmental friendliness.

Unlike traditional gas generators that burn fossil fuels and emit pollutants, solar generators are powered purely by sunlight, making them a more sustainable choice for electricity generation.

Additionally, they operate quietly and are generally simple to use, offering a user-friendly experience.


While solar generators have many benefits, there are limitations to be mindful of.

Their effectiveness is highly dependent on the availability of sunlight, which means they may not be the most reliable choice in consistently cloudy or rainy locations.

Moreover, using a basic setup with a single 100-watt solar panel can mean lengthy charging times, contrasting with fuel-powered generators that can generate electricity as long as they have fuel.

Why Use Solar Generators and Who Can Benefit From Them?

Eco-Conscious Individuals

If you’re looking to reduce your carbon footprint, solar generators are a green alternative to traditional gas-powered generators.

They run on renewable energy from the sun, thereby eliminating the pollution associated with burning fossil fuels.

Noise and Odor-Sensitive People

Traditional generators can be loud and emit unpleasant smells due to their combustion engines.

In contrast, solar generators operate silently and emit no odors, making them a far less intrusive option.

Outdoor Enthusiasts

Whether you love camping, boating, or simply spending time in nature, a solar generator can enhance your experience.

These generators allow you to enjoy modern conveniences like lighting, charging devices and even running small appliances, all while being off-grid.

Emergency Preparedness

Solar generators can be a lifesaver in emergency situations like power outages, providing a reliable backup source of electricity that’s easy to use and maintain.

How Much Do Solar Generators Cost?

The cost of solar generators varies widely, ranging from $200 for basic models to over $10,000 for advanced, commercial-grade options.

How to Charge Solar Generators?

Solar generators are versatile devices that offer multiple charging options to suit different needs and scenarios.

Here are some of the popular ways to charge a solar generator:

1. Charging with Solar Panels

The most common way to charge a solar generator is by using solar panels.

These panels capture sunlight and convert it into electricity that charges the generator’s battery.

It’s essential to match the solar panel’s power rating with the generator’s input rating to avoid damaging the battery.

2. Charging with an AC Outlet

Wall outlets offer another convenient method for charging your solar generator, particularly when you are uncertain about the availability of sunlight.

Some modern models can be fully charged in as little as 2 hours when plugged into an AC outlet.

3. Charging with Your Vehicle

For those who spend a lot of time on the road, car chargers can be a practical option.

Many solar generators come with 12V car chargers that allow you to charge them using your vehicle’s 12V outlets.

These multiple charging methods make solar generators a flexible and convenient choice for both stationary and on-the-go power needs.

Apart from these solar generator charging options, you can also explore: Can you charge a solar generator with a gas generator?

Whether you’re at home, on a road trip, or out in nature, these options ensure that you can keep your solar generator charged and ready to provide power when you need it.

What Appliances Can You Run With a Solar Generator?

The versatility of solar generators allows you to power a wide range of appliances and devices, depending on the generator’s capacity.

Here is a breakdown of what you can power with solar generators based on your list:

Power Large Appliances: Solar power systems can be designed to power large energy-consuming appliances like air conditioners, washing machines, and refrigerators.

While the initial investment is substantial, it can eliminate your ongoing electricity bills for these devices.

Power Cooker: From small coffee makers to large ovens, electric cookers can be powered by a moderately sized solar generator.

A 500-watt system should suffice for most standard cooking appliances.

Power Building Tools: Drills, routers, and even more demanding tools like circular saws can be powered by solar generators.

The system’s wattage must match the tools’ energy needs, with a 1500-watt panel covering most drills and routers and a 3000-4000-watt system for larger tools or multiple devices.

Power Electronic Devices: Smartphones, tablets, and other essential electronics can be easily powered by most solar generators, often through AC adapters or 12V DC outlets.

Power Light: Solar generators often include built-in lights or can power external lighting solutions, useful for both home and camping situations.

Power Mini Fan: When the sun is shining, and temperatures rise, a mini fan can provide relief. These fans usually require around 40 watts, easily sourced from most solar generators.

Here are some topics of what different sizes of solar generators might be capable of powering:

How Long Will Solar Generator Power Your Device?

The length of time a solar generator can power your device depends on the capacity of the generator’s battery, and the power consumption of the device.

If a solar generator has a stated capacity of 100 watt-hours and you plug in a lightbulb that draws 20 watts, you can expect it to run for five hours (20 watts times 5 hours equals 100 watt-hours).

To calculate how long a device can be powered by solar generators, you can use the formula:

Run Time (hours) = Generator Capacity (Wh) / Device Consumption (W) 

How Long Do Solar Generators Last?

Generally, a well-built solar generator from a reputable company can last between 10 to 20 years, with some components needing replacement or maintenance sooner than others.

  1. Solar Panels: These usually come with a warranty of 25 to 30 years and can even last longer if well-maintained.
  2. Batteries: The types of solar battery used significantly impacts the generator’s lifespan. Lead-acid batteries may last around 3-5 years, while lithium-ion batteries can last up to 10 years or more.
  3. Inverter and Charge Controller: These components usually last about 10 to 15 years.

Regular maintenance, such as cleaning the solar panels and checking the battery water levels (for lead-acid batteries), can also extend the lifespan of a solar generator.

Remember that while the generator itself can last a long time, its efficiency may decrease over the years.

Solar panels, for example, lose about 0.5% to 1% of their efficiency each year, which means they’ll produce slightly less energy as they age.

So, while solar generators can be a long-lasting investment, it’s crucial to consider the lifespan of each component and the maintenance required to maximize their longevity.

How to Maintain a Solar Generator?

Ensuring the longevity and optimal performance of your portable solar generator requires proactive care and maintenance.

Below are some targeted recommendations for maintaining your generator effectively:

Shield it from Environmental Elements: Although many solar generators come in waterproof cases, it’s wise to keep them away from moisture and harsh weather conditions.

Water and snow exposure over time can compromise even the most robust waterproofing, affecting internal components.

Treat your generator as if it weren’t waterproof to prolong its life.

Handle with Care During Transportation: Portable solar generators are designed for mobility but can be susceptible to damage from falls.

Always secure your generator firmly during transit and place it in a location where it’s not prone to toppling over or colliding with other objects.

Stick to Recommended Power Usage: Your generator has a specified maximum power capacity, and exceeding it can cause premature wear and tear.

Always consult the manufacturer’s guidelines for this limit, and if you’re unsure about the power needs for specific tasks, opt for a generator with a higher capacity than you anticipate requiring.

Turn Off When Not in Use: Preserve your generator’s battery life by switching it off when it’s not actively powering devices.

Keeping it turned on unnecessarily will only drain the battery and potentially shorten its lifespan.

Check for Secure Connections: Loose electrical connections can impede the performance of your connected devices and could even cause the generator to malfunction.

Periodically inspect the integrity of the connections, tightening any that appear loose.

High-quality cables and adapters can also make a significant difference in maintaining good connections.

For more topics about solar generator maintenance, you can check the following article:

What Size Solar Generator Do I Need?

When selecting the right solar generator size, figuring out the wattage you’ll require is a key consideration.

To tackle this question, it’s essential to tally up the total wattage for all the devices and appliances you plan to run off the solar generator.

Get total hours for all devices

Start by identifying the total hours each device will need power. Multiply the number of hours by the number of devices.

For example, if you need to run two fans for 4 hours each, the total would be 4 hours x 2 fans, equating to 8 hours.

Get the total wattage of all devices

Every electrical device has a wattage rating, which is often listed in the product specifications.

If this information is not readily available, you can also calculate wattage by multiplying the device’s amperage by its voltage.

Calculate total watt-hours for all devices

To find the total watt-hours (Wh) needed, you can multiply the total hours calculated in the first step by the wattage of the device.

For instance, if you want to run two 50-watt fans for 2 hours each, you’d first multiply the 2 hours by 2 fans to get 4 hours. Then, multiply these 4 hours by the 50-watt rating of the fans, resulting in 200 Wh.

Factor in Efficiency

Electrical devices are not 100% efficient, so it’s good to account for some energy loss.

A common rule of thumb is to divide your calculated total watt-hours by an efficiency factor of 0.85.

For example:

200Wh / 0.85 = 235.29 Wh

This suggests that you’ll need a solar generator capable of delivering at least 235 Wh to power your two 50-watt fans for 2 hours each reliably.

Consider Starting Wattage and Peak Power

Lastly, ensure that the solar generator you choose has adequate starting wattage and peak power to support all the devices you intend to use.

This ensures that you won’t overload the system when multiple devices start up simultaneously.

How to Choose a Solar Generator?

If you’re thinking about getting a portable solar or solar backup generator, there are a few considerations to keep in mind.

First, determine the amount of power you require.

This depends on the number and type of appliances and lights you need to operate, and for how long.

Next, think about where you’ll keep your generator.

It should be a safe, dry spot where it’s protected from the elements.

Lastly, consider how frequently you intend to use the generator.

If it’s for occasional use, a smaller model might suffice.

But if you plan on using it regularly, a larger model providing more power could be a better choice.

Regardless of your need for a portable solar or solar backup generator, there’s a variety of options in the market.

With some research, finding the perfect generator to meet your needs shouldn’t be a challenge.

Key Takeaways

  • Solar generators function as mobile energy hubs, harnessing solar power instead of relying on fossil fuels to generate electricity.
  • Portable solar generators are typically made up of four essential components: solar panels, a solar battery for energy storage, an inverter to convert stored energy, and a charge controller to manage the flow of electricity.
  • Among the notable benefits of solar generators are their fuel-free operation, utilization of clean, renewable energy, and minimal maintenance requirements.
  • However, they come with certain downsides, including a significant initial financial outlay, relatively slow recharging rates, and a limited amount of stored power available for use.