BESS works as follows:
- Energy storage:
When there is excess energy, such as solar power during the day, the BESS stores it in batteries.
- Energy supply:
When needed, such as at night or when the grid power fails, the BESS discharges the stored energy to supply power to devices.
Main applications of BESS:
- Renewable energy optimization:
BESS helps solve the problem of the intermittency of renewable energy sources such as solar and wind power, by storing excess energy and supplying it when needed.
- Grid balancing:
BESS can help stabilize the grid by adjusting the amount of electricity supplied and consumed, especially in situations where there are sudden changes in electricity demand.
- Backup power supply:
BESS can provide backup power in the event of a power outage, ensuring the continuous operation of important devices.
- Cost savings:
By utilizing low-cost energy sources (e.g. solar power during the day) and storing it for use during peak hours, BESS can help reduce electricity costs.
Types of batteries commonly used in BESS:
- Lithium-ion batteries:
This is the most common type of battery in current BESS systems, featuring high energy density, long life and good performance.
- Vanadium batteries:
This type of battery has the advantage of long life and large energy storage capacity, but is often more expensive than Lithium-ion batteries.
Advantages of BESS systems:
- High reliability:
BESS helps reduce dependence on a single power supply and increase the stability of the power system.
- Flexibility:
BESS can be deployed at various scales, from households to large power plants, and can be easily expanded or changed when needed.
- Sustainability:
BESS helps optimize the use of renewable energy, contributing to reducing greenhouse gas emissions and protecting the environment.