ABSTRACT
Replacing fossil fuel power capacity with green energy storage is not an easy task and a country cannot make the transition overnight. It needs detailed planning and implementation for ultimately raising the national electricity contribution from renewable sources paired with storage. In the United States, the addition of storage infrastructure in the form of mainly batteries and pumped hydropower opens the door to lowering the curtailment shares, increasing wind integration into the grid, and evidently reduction in CO2 emissions. It has been estimated that by adding energy storage, the transmission system operator will be able to eliminate curtailment, and 12 billion kWh of electricity from wind can be added yearly to the grid, which can be enough to supply 2.5–3 million average US households.
