Category Archives: CAES Compressed Air

CAES is one of the 3 kinds of bulk storage that can store hours of excess intermittent power, but there are very few places to put them, they have very low efficiency, and are basically natural gas turbines that use less natural gas. There are just 2 in the world now, 110 MW in Alabama and 330 MW in Germany

Compressed air energy storage (CAES)

Besides pumped hydro, CAES is the only other commercially proven energy storage technology that can provide large-scale (over 100 MW) energy storage. How it works: Using off-peak electricity, compressed air is pumped into very large underground cavities at a depth … Continue reading

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