Dispersed power generation systems such as photovoltaic, fuel cell, wind power generation need to be connected to a utility power grid for the systems to work effectively.

光伏、燃料电池、风力等分布式发电系统需要并到电网才能更方便被利用。

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The DC electrical energy generated by photovoltaic systems may also be converted to AC and connected to a utility grid system.

直流光伏系统所产生的电能也可转换为交流电连接到电网系统。

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Customers (in this case the school district) pay no money up-front, paying only for the solar energy they use and typically seeing reductions on their utility bills as soon as the system is connected to the grid.

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