Solar Generator: How it Works and Which One Should You Get

The growing demand for alternative energy sources has encouraged the development of solar generators as portable, solar-powered devices that can provide electricity wherever you need it, without the emission of harmful gases, and at minimal cost.  

Therefore, it is no wonder that in the world of renewable energy sources and sustainable solutions, solar generators are becoming increasingly popular. 

In this article, we’ll explain what a solar generator is, how it works, and what its advantages are, and we'll offer some recommendations on the most popular solar generator models.

What is a Solar Generator? 

A solar generator is a portable energy-storing device that utilizes solar energy to charge batteries and then uses the energy that has been stored to power a variety of devices. 

Its main component is a solar panel that collects solar energy and converts it into electricity, together with a battery that stores the energy for later use.  

It is suitable for use in residential settings, for campers, for use outside, and for use in emergency situations as an emergency power solution, where an independent and reliable supply of electricity is required. 

How Do Solar Generators Work?

The principle of operation of the solar generator is simple. Solar panels capture sunlight and convert it into direct current. That current then passes through a charge controller that regulates the voltage and prevents the batteries from being overcharged. 

After the energy is stored in the batteries, it can be converted into alternating current using an inverter, which enables it to power household appliances and electronics. 

So, the key components of a solar generator include solar panels, batteries, inverters, and charge controllers. 

Let’s explain the mechanism of a solar generator’s operation step by step:

1. Capturing energy. Solar panels absorb sunlight and convert it into direct current (DC).
2. Regulating captured energy. The charge controller regulates the flow of electricity from the solar panels to the solar battery, ensuring secure charging.
3. Storing energy. Captured energy, meaning electricity, is stored in the battery for use when solar energy isn’t directly available, such as in bad weather or during the night.
4. Converting energy. When electricity is needed, the inverter converts the accumulated DC electricity into AC, making it suitable for residential use.

Solar Generator vs. Gas Generator 

Gas generators and solar generators serve the same function: to supply electricity on the go. However, even though both of these options offer portable electricity sources, they are fundamentally distinct from one another in terms of how they function and, in particular, how they impact the environment. 

So, since solar generators produce no emissions as they work on sunlight converted into electricity, they are an eco-friendly, sustainable solution. It doesn’t pollute the air or create noise, which makes it an optimal solution for indoor use and in all those settings when noise and air pollution are an issue. 

Meanwhile, a gas generator, though a powerful source of electrical energy, is not an ecological and environmentally friendly choice as it emits harmful gases. Running on fossil fuels like gasoline and propane, gas generators aren’t only a bad ecological choice but also a costly one, as they require a constant supply of fuel. 

3 Key Features of Solar Generators

Now that we have explained what solar generators are and how they work, let’s analyze their key benefits:

Portability and Ease of Use

Solar generators are light, portable, and easy to set up. They don’t require any special technological knowledge or skill for installation, and, in the vast majority of cases, they are configured through a simple plug-and-play interface.  

This is why they are such a great option for outdoor activities like RVing or camping, though there’s also no reason not to use them for residential purposes as well. 

Since they don’t emit harmful gases, make noise, or require fuel supply, they can be used in both indoor and outdoor settings in equally easy, affordable ways.

Types of Batteries Used

Instead of running on costly commercial fuels, solar generators rely on solar batteries for storing electrical energy, whereas the type of battery used defines the solar generator's power, weight, and durability. 

The most common types of batteries used in solar generators are lithium-ion and lead-acid batteries. Lithium-ion batteries are the most common choice because they recharge fast, have a long life, and provide high energy density. This means they have a high energy output. 

Lead-acid batteries also enjoy a lot of popularity, especially with users who are on a budget and don’t have high energy demands. These batteries aren’t as powerful as the lithium-ion ones, but they are affordable and successfully cater to lower energy demands.

Power Capacity and Wattage Options for Different Needs

Many people who aren’t familiar with solar generators are prone to believing that their usage and power are more limited than they actually are. In fact, solar generators are produced in different sizes and wattage capacities so they can meet both low- and high-demanding energy requests. 

If you mainly plan to power small electronics like mobiles, laptops, tablets, and similar devices, a small generator with lower wattage will perfectly match your needs. However, there’s also a wide selection of larger solar generators with higher wattage that can power medical devices and bigger home appliances like refrigerators and similar household devices.

5 Major Benefits of Solar Generators

There are many benefits of solar generators, but we’ll focus on those that are the most significant, including:

#1. Low Maintenance Cost

Once you invest in a solar generator, long-term operating costs are minimal because there’s no need for fuel. Solar energy is free, and the devices are easy to maintain. 

Solar generators are far easier to maintain than conventional gas generators because they contain fewer moving parts, which means they experience less wear and tear and have lower maintenance costs. The only maintenance they need is routine inspections of the battery life and cleaning of the solar panels.  

#2. Quiet Operation

Due to the fact that they produce almost no noise at all, solar generators aren’t disruptive to the environment and, therefore, are ideal for outdoor use and on all those occasions when noise could be an issue. In outdoor settings where human activity may have an adverse effect on wildlife, this is an especially useful noise-free device for campers.

#3. Environmentally Friendly

Solar generators use renewable energy sources, reduce carbon dioxide emissions, and do not pollute the environment. They are an ecological alternative to traditional aggregates that use fossil fuels. Thus, solar generators contribute to a cleaner environment. 

#4. Versatility

The fact that solar generators are so easy to set up, use, and carry around makes them incredibly versatile devices. From serving as a powerful energy source in emergency situations like urgent medical interventions and during power outages to supporting outdoor activities, solar generators are ideal, sustainable sources of electricity.  

#5. Long-Term Cost-Effectiveness

No matter their upfront cost, investing in a solar generator pays off as it eliminates the need for fuel in the long run, thus reducing maintenance expenses. Due to the fact that solar energy is free and these devices require only routine maintenance, there are no ongoing expenses beyond the initial payment, guaranteeing a return on investment.

How Much Do Solar Generators Cost?

The price of a solar generator depends on its power output, storage capacity, battery type, and other characteristics. Generally, the more powerful and advanced the solar generator, the more expensive it is. 

However, this doesn’t mean that you should always simply opt for the most expensive one. In choosing the right solar generator, you should consider your energy needs and consumption and opt for the one that fits your budget while offering the best value for your money. 

Here’s a table of typical price ranges for different types of solar generators:

3 Best Solar Generators on the Market

If you are considering buying a solar generator, it is important to explore and compare products from different brands. 

Here are a few suggestions that can help you narrow your choices. 

#1. Complete Off-Grid Solar Kit - 3000W 120V Output 

The Complete Off-Grid Solar Kit - 3000W 120V Output is an excellent solar power solution for small spaces such as RVs, cabins, and barns.

Easy to integrate with different off-grid setups, it combines high-capacity storage (15.4 kWh) with 4,740 watts of solar power. Coming with EG4-LifePower4 lithium batteries, this solar kit stands out as a powerful and durable solar generator that can support long-term energy needs. 

Additionally, this solar generator provides improved safety and optimized battery performance because of built-in BMS communication (battery management system), which adds to its dependability and longevity. 

#2. Complete Off-Grid Solar Kit EG4 6000XP

The Complete Off-Grid Solar Kit EG4 6000XP comes with the EG4 6000XP inverter that can manage up to 8kW of photovoltaic (PV) input and deliver 6kW of continuous power output. It is perfect as an off-grid energy solution for applications, as it is a reliable and scalable energy solution. 

It allows for parallel connections of up to 16 units, which makes it highly adaptable to varying energy needs. Providing up to 96 kW of output power, this is an optimal solution for off-grid living, remote cabins, and areas with unreliable grid power. 

#3. EG4 Complete Hybrid Solar Kit

The EG4 Complete Hybrid Solar Kit includes an EG4 6000XP inverter with a 30.72 kWh lithium power wall and over 14.5 kW of solar PV panels. 

The most attractive advantage of this solar kit is that it provides both off-grid and on-grid capabilities, which makes it an ideal choice for residential users who aim to reduce energy costs, achieve energy independence, and have a reliable backup power source. 

Nevertheless, since it provides 12000W of 120/240V output, it is just as suitable for small commercial applications, making it a smart choice for entrepreneurs and small businesses. 

3 Common Uses of Solar Generators

A solar generator can be used for a variety of purposes, so let’s name a few of the most popular ones: 

#1. Backup for Power Outages

A solar generator can help you prepare for unexpected power outages and keep your essential appliances and devices running. You can use it to power lighting, fans, heaters, refrigerators, telephones, laptops, radios, and medical equipment. You can also use it to run your water pump, freezer, and security system.  

#2. RV and Camping

Using solar generators for camping is a very popular and common practice. Solar generators are commonly used as an energy source for RV appliances, as they provide noise-free, clean energy alternatives. 

Because of their small size, ease of use, and ability to improve the outdoor experience without negatively impacting the environment, they are a favorite among RV owners and camping enthusiasts.

#3. Emergency Preparedness Kits

A solar generator should be a component of every emergency preparedness kit because it is so versatile, powerful, and practical for use. Solar generators can significantly relieve the consequences of natural disasters and all kinds of crises in which traditional sources of electricity may be unavailable. 

The fact that they can power medical devices, as well as all kinds of home and commercial appliances, makes them an invaluable tool in all kinds of emergency situations.

What to Look for in a Solar Generator and How to Choose One 

There are many types of solar generators, each with its own features and specifications. Here are some important factors to consider when comparing different solar generators to make the choice easier. 

#1. Power Output

Power output refers to the amount of electricity that a solar generator can provide at a given time. It is measured in watts (W) and kilowatts (KW). The higher the power output, the more appliances and devices you can run with your solar generator. 

However, higher power output also means higher solar generator price and weight. You should choose a solar generator that can meet your peak power demand, which is the sum of the power of all the appliances you want to run at the same time.

#2. Storage Capacity

Storage capacity is the amount of electricity a solar generator can store in its battery for later use. It is measured in watt-hours (Wh) and kilowatt-hours (kWh). The higher the storage capacity, the longer you can use the solar generator without recharging. 

However, more storage capacity means a higher price and weight. You should choose a solar generator that can meet your daily and weekly energy consumption, which is the sum of the watt-hours of all the devices you use in a day or week.

#3. Battery Type

There are two main types of batteries used for solar generators, which include lead-acid and lithium-ion batteries. Lead-acid batteries are the cheapest and most common, but they are also the heaviest, bulkiest, and least efficient. They have a short lifespan and require regular maintenance. 

Lithium-ion batteries are lighter, smaller, and more efficient, but they also cost more and are more prone to overheating. You should choose the type of battery that matches your performance preferences, safety standards, and budget. 

#4. Price

Prioritize the return on investment (ROI) you will get from selecting the best solar generator over up-front cost. Depending on your energy consumption, you can experience a quick or gradual return on investment (ROI) when you select the type of solar generator that matches your needs well. 

Final Thoughts

A solar generator is an excellent solution for anyone looking for a practical, environmentally friendly, and long-lasting electricity supply. 

Regardless of whether you are using a solar generator for home use, are a fan of camping, or simply want extra security in the event of a power outage, eco-friendly generators provide the right solution. 

So, should you have any questions regarding the choice of a solar generator that fits your needs, we can always offer professional advice to help you find the optimal solution. 

Solar Generator FAQ

#1. Can a solar generator power a house?

Yes, a solar generator can power a house. There are solar generators of different capacities, so it is essential to choose the one that matches the energy needs. High-capacity solar generator systems can support entire households with all the appliances.

#2. How long does it take to charge a solar generator?

The charging time for a solar generator depends on many factors. In general, the charging time ranges from 4 to 12 hours, depending on the battery capacity, sunlight availability, and the included solar panel voltage. 

#3. Do solar generators require maintenance?

Yes, they require minimal maintenance. Modern solar generator kits are built to last, and routine checks of solar panels, battery health, and connections for damage are usually all it takes for long-term, uninterrupted performance. 

#4. What is the difference between a solar inverter and a solar generator?

A solar inverter is a component of a solar energy system, and its purpose is to convert direct current from solar panels into alternative current power for household use. Meanwhile, a solar generator refers to a solar setup that includes an inverter, solar panel, and battery storage in one system.

Disclaimer: The content on Portable Sun is for informational purposes only. Electrical work can be dangerous—always consult a qualified professional. We are not liable for any injuries, damages, or losses from installation or use. Always follow local regulations and safety guidelines when handling electrical components.