One solution to optimize energy sources combined with solar or wind power is called battery energy storage system (BESS) . If you are a beginner, this article will help you understand how BESS works, its benefits, limitations, costs, and practical applications in homes, industries, and commercial areas.

What is a battery energy storage system (BESS)?

Battery Energy Storage System (BESS) is a technology that allows the storage of electricity, usually from renewable energy sources such as solar or wind power, for use at another time when needed.

BESS helps ensure a stable power supply, especially in situations where energy supply fluctuates due to weather or grid failures. The system plays an important role in improving the efficiency, reliability and flexibility of modern energy solutions.

Operating principle of Battery Energy Storage System (BESS)

The operating principle of the battery storage system (BESS) is based on intelligent storage and release of electricity, depending on usage needs. Specifically:

–  When there is excess electricity supply (such as during the day when there is a lot of solar power or at off-peak times when electricity prices are cheap), the BESS will store electricity in the battery as direct current (DC).

–  When electricity demand increases (for example at night or when renewable energy sources decrease), the system will discharge electricity from the battery back to the grid, through the inverter to convert electricity from DC to alternating current (AC), suitable for use.

–  The control software will monitor and coordinate this entire process, from storage, conversion to discharge, ensuring optimal performance and safe operation.

It can be said that the battery storage system (BESS) helps to optimize and reduce the load on the grid while developing clean energy.

Advantages of battery electric storage system (BESS)

It is impossible not to mention the 5 outstanding advantages that the battery storage system brings such as: regenerating energy sources, enhancing and stabilizing, reducing emissions, providing backup power and improving energy efficiency.

Optimizing renewable energy sources 

Battery storage systems allow excess electricity from renewable energy sources such as solar and wind power (which are often unstable over time). And thanks to this storage capacity, BESS helps to maximize the amount of electricity produced during sunny or windy times. Then discharge it back to the grid when weather conditions are unfavorable or when demand increases. This helps reduce electricity waste and supports the transition to cleaner energy more effectively.

Strengthen grid stability

One of the outstanding advantages of BESS is its ability to maintain stability for the power system. When the power supply from renewable energy fluctuates abnormally, BESS will act as a “buffer”, helping to balance production and consumption. The system can charge when there is excess electricity and discharge when demand spikes, thereby minimizing the risk of overload, power outage or supply interruption.

Reduce emissions and save electricity during peak hours

BESS helps reduce the pressure on traditional power plants. By storing electricity during low demand and reusing it during peak demand, the system not only saves electricity costs but also reduces the need to operate power plants. As a result, BESS becomes an effective solution to both save money and protect the environment.

Backup power supply

In the event of an unexpected power outage, the BESS can act as a reliable backup power source. This feature is especially useful for households, businesses, or manufacturing facilities that need to maintain continuous operations.

Improve energy efficiency

In addition to saving costs and reducing dependence on grid power, BESS also helps users manage energy more intelligently. The system can optimize storage time and coordinate reasonable discharge. This helps improve electricity efficiency and increase initiative for households or businesses.

The economics of battery energy storage systems (BESS)

The economic problem of battery storage systems is still a concern. The cost of installing an electricity storage battery system can range from 50 million to several hundred million VND for a household scale. For large commercial or industrial scale, it can be up to billions of VND.

However, BESS can help reduce electricity bills by storing electricity during off-peak hours and using it during peak hours. And if users want to “break even”, they need to carefully consider their electricity needs, the level of renewable energy self-consumption and the payback period, which usually takes 5 to 10 years depending on the scale of the system and the electricity price in the area.

Unify Energy – A supplier ofinternational qualitybattery storage systems (BESS)Unify Energywith a dedicated, enthusiastic and professional team.

For more information, please contact Hotline: 0968 987 880 for detailed advice!

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