What is a Grid-connected battery storage system?

A grid-connected battery storage system refers to a battery system that is connected to the electrical grid to maintain power supply stability. This type of battery helps balance the supply and demand of electricity and plays a crucial role in providing power during peak demand periods or times of power instability. It can also store surplus electricity generated from renewable energy sources such as solar or wind power, thereby promoting more efficient energy use. The main functions of a grid-connected battery are adjusting the power supply to the grid, shifting peak demand, and providing backup power during shortages. For example, when combined with renewable energy sources, which have variable output, the battery can store excess energy when production is high and supply stored energy during times of low generation.

In addition, grid-connected batteries are used to smooth fluctuations in load demand. For instance, during peak hours when electricity demand is high, the battery can help supply power, and during off-peak hours or at night, it can recharge itself. This creates a cycle that supports a stable and balanced power grid. As a result, grid-connected batteries help improve power stability, promote the integration of renewable energy, and assist in reducing electricity costs. They are expected to become increasingly widespread as an essential part of the modern power infrastructure.

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