当2011年晚些时候系统二期投入运行时，它将提供至多20兆瓦的预留容量。
When phase 2 of the system becomes operational later in 2011, it will provide a total of up to 20 megawatts of reserve capacity.
同样这些站点需要为故障或峰值事件预留一些备用组件，在站点需要附加容量时使用。
Likewise, the site may want to keep components in reserve for failover or peak events when the site might need additional capacity.
合理的AGC容量预留与良好的AGC调节策略可大幅较低agc调节成本，加强调节效果。
Reasonable AGC capacity reserve and effective AGC control strategy would significantly reduce adjustment costs and strengthen the AGC regulating effect.
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