Capturing carbon dioxide instead of releasing it into the atmosphere is a way we can use fossil fuels without it having harmful effects on the climate. Energy storage is a way to address the volatility of clean energy sources like wind and solar power. Excess energy stored during peak production can be used when production ceases, such as when the sun is not shining or the wind is not blowing.
Wind power is a growing contributor to the energy grid but it has its limitations. Wind turbines need to be located in windy places and the structures are big, get in the way of things, and are rather costly.