AES Growing Its Energy Storage Fleet, Project Pipeline in the Americas and EU

AES subsidiary AES Energy Storage manages the largest fleet of grid batteries in commercial service, with 86 megawatts of storage capacity in operation, 50 megawatts in construction, and 210 megawatts in late-stage development.

Looking at the portfolio of the largest utility storage provider reveals the multiple personalities of energy storage.

Solar is simple — it neatly divides into residential, commercial and utility markets, has known performance, and decades of field data. (And still, despite tens of gigawatts deployed, solar’s cost and value remain hotly contested.)

Storage, on the other hand, is complicated. It can perform a variety of different grid services (some with markets, some not) and it addresses geographically specific grid problems. Behind the meter, storage can lower demand charges and mesh with demand response as an aggregated fleet (see Stem’s award from SCE).
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