TOP 10 THINGS YOU NEED TO KNOW ABOUT SOLAR ENERGY STORAGE SYSTEMS

05.03.2025

Solar energy has long been known as a plentiful, eco-friendly, and sustainable resource for the future. But its biggest downside is that it’s not always steady sunlight only comes during the day and depends on the weather. That’s where solar energy storage systems come in. They store solar power so you can use it anytime, even at night or on rainy days. So, what are these systems? How do they work, and what benefits do they bring? Let’s explore the top 10 key facts about solar energy storage below.

1. What Is a Solar Energy Storage System?

It’s a technology that uses batteries or special devices to save electricity made by solar panels. Instead of using the power right away, you can store it for later—like at night, during bad weather, or when the grid goes down. Think of it as a smart “energy piggy bank” that helps you make the most of solar power without wasting it.

2. The outstanding benefits of solar energy storage systems

Solar storage isn’t just a tech fix—it’s super useful! Here’s why:

Maximize Solar Use: You can use stored energy when the sun’s not out, cutting your electric bill and making you less reliant on the grid.
Reliable Backup: It keeps the lights on during outages, storms, or emergencies.
Good for the Planet: Using solar instead of fossil fuels cuts carbon emissions, helping fight climate change and promoting a green lifestyle.

3. Types of Solar Storage

There isn’t just one kind—here are the three main types:

Thermal Storage: Uses materials like water or molten salt to store heat from the sun, which can later be turned into electricity. Common in big solar plants.
Battery Storage: The most popular for homes and small businesses. Batteries like lithium-ion or lead-acid store electricity from solar panels. Lithium-ion is a favorite because it lasts long and works well.
Mechanical Storage: Saves energy physically—like pumping water uphill to store potential energy or spinning flywheels to hold kinetic energy.

4. How It Works

It’s pretty simple: During the day, solar panels catch sunlight and turn it into electricity. Any extra power you don’t use gets saved in batteries or storage devices. When the sun’s gone, that stored energy powers your home or business.

5. Fits Any Need

You can install these systems anywhere—small homes, medium-sized businesses, or huge power plants. You just pick the battery size and storage type that matches what you need.

6. Saves Money Over Time

Yes, setting it up might cost a lot at first, but in the long run, it saves you money on electricity, especially if you live where power is pricey or unreliable.

7. Boosts Renewable Energy

Using storage systems doesn’t just help you, it helps grow renewable energy worldwide. The more people use it, the better the tech gets, prices drop, and clean energy spreads.

8. Things to Watch Out For

It’s not all perfect. Batteries don’t last forever, replacing them can be expensive, and extreme weather might affect how well they work.

9. The Future Looks Bright

Technology keeps improving, so solar storage will get cheaper, more efficient, and easier to use. Researchers are working on bigger batteries, longer lifespans, and eco-friendly production.

10. ON Energy, A Trusted Provider in Vietnam

In Vietnam, ON Energy Green Energy Joint Stock Company stands out as a top supplier of solar storage systems, offering VinFast-branded products. As a long-term partner of VinFast, ON Energy provides high-quality systems and expert support. Their experienced engineers help with advice, installation, and maintenance to make sure customers are happy.