In general, twenty percent extra power is the standard spinning reserve on the grid.

一般来说，电网的标准热备用是20%。

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Wind can indeed supplement a grid with this needed twenty percent spinning reserve, but it cannot come close to replacing fossil fuel.

风能确实可以弥补电网需要的20%的热储备，但是它绝不可能替代化石燃料。

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California's main power grid manager, the Independent System Operator, reported that turbines spinning within the ISO grid produced a record of 4, 196 megawatts Sunday.

NPR: Windy Spring Storm Sweeps Through Calif., Arizona

If widely adopted, the Controller technology would reduce the spinning reserve capacity needed significantly and allow the grid to operate at a higher capacity.

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