In the context of large utility-scale and corporate use, energy storage systems benefit the environment in a number of ways. By providing storage for renewably generated energy including wind and solar, batteries save clean energy and distribute it closer to the source of its use and at off peak times when renewable technology is not generating energy. Thus, the energy storage systems extend the positive environmental benefits of wind and solar. As the amount of renewable energy grows, battery storage is a crucial component to storing and distributing the energy to provide for a reliable grid.
Energy storage systems also offset the need to build more fossil fuel systems like coal-fired power plants, nuclear or natural gas systems. Fossil fuel plants can take many hours to ramp up and deliver electricity to the grid. Energy storage/ battery systems respond quickly and when used to replace fossil fuel power plants, they cut CO2 emissions.
The cost of energy storage systems is falling and represent a much smaller investment than large central generation power plants. They can be constructed much more quickly than traditional systems and reduce transmission costs as the energy is closer to the source of consumption. All of these attributes reduce construction costs, materials and impact on the environment.
For example, a growing number of states see energy storage as a way to reduce carbon emissions and at the same time, electricity costs.