In general, solar and wind parks are incredibly efficient at producing energy—to the point where they cannot direct all their produced energy into the grid when there is a bottleneck. This grid limitation then forces energy parks to stop producing energy, hindering their efficiency. However, with a battery storage system in place, solar and wind parks can continue to produce energy uninterrupted by directing surplus energy to the battery storage. This stored surplus energy can then be used at times when the energy park is not producing energy, for example at night, or when there are peaks in energy consumption.  

Another benefit is that if a park ends up with a lot of unneeded stored energy, this energy can then be sold on the controlled energy market, making the energy park profitable. This will help especially in paying off initial investments, and eventually even become a source of profit.