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> For example, a battery that primarily functions in the frequency regulation market (modulation of supply and demand every few seconds) doesn't need a lot of storage capacity, but needs high power output.

For ERCOT this is fixed as a hard requirement so there's no point in specifying the time-- it's all going to be the same. For example:

> Fast Frequency Response (FFR) – subset of RRS

> – Must be capable of sustaining its required response for at least 15 minutes (if necessary)




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