Energy storage is helpful on a grid scale because it can help improve the stability and reliability of the electrical power grid by addressing the challenge of intermittencies inherent in many renewable energy sources, such as wind and solar. Energy storage systems help to address this issue by storing energy when it is abundant and releasing it when it is needed, thus ensuring a more reliable and stable energy supply.
On a grid-scale, energy storage can be used in several ways to improve the stability and reliability of the electrical power grid:
Meeting peak demand: Energy storage systems can store excess energy generated during periods of low demand and release it during peak demand. This helps to reduce the need for fossil fuel-powered plants, which are typically only used to meet peak demand.
Improving grid stability: Energy storage systems can help to improve grid stability by providing frequency regulation and voltage support. When there is excess energy on the grid, the frequency can increase, which can cause instability. Energy storage systems can absorb extra energy, helping to stabilize the frequency. Similarly, energy storage systems can provide voltage support by injecting fuel into the grid when the voltage drops, helping to stabilize the grid.
Deferring the need for grid infrastructure upgrades: Energy storage systems can delay transmission and distribution infrastructure upgrades by reducing peak demand. By reducing peak demand, energy storage systems can help reduce the need for new transmission and distribution infrastructure, which can be expensive and time-consuming.
Providing backup power: Energy storage systems can provide backup power in the event of a power outage or black-out. This can help improve the grid's reliability and reduce the impact of power outages on homes and businesses.
Overall, energy storage is a critical technology for improving the stability and reliability of the electrical power grid, particularly as more and more renewable energy sources are integrated into the grid. By addressing the challenge of intermittency and providing a reliable and stable energy supply, energy storage systems can help to support the transition to a clean energy future.