The capacity of peak load unit directly affects peak electricity price level and reliability of power supply during peak load period.

峰荷机组装机容量的确定直接影响到峰荷时段的电价尖峰水平和供电可靠性等问题。

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Because of the price difference of peak and valley electricity, maximizing electricity is not equal to maximize benefits.

由于存在着峰谷电价差，发电量最大并不意味着效益最大。

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Research on the project using peak-valley electricity price to reduce the operation power charge has active significance.

南水北调东线一期工程抽水用电量大，研究东线工程利用峰谷电价减少工程运行电费具有积极意义。

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In many sunny places, including several American states and southern European countries, it is cheaper than the peak-time retail price of electricity.

ECONOMIST: Solar power