At night, when demand is lower, these power stations can be switched off, which means that each unit of electricity has a lower carbon footprint.

到了晚上，需求降低，这些发电站就会关闭。这意味着产生每单位电能所带来的碳足迹降低了。

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Jug kettles are fast and convenient, but their fuel - electricity from the national grid - produces almost three times more greenhouse gas for each unit of heat than burning gas in the home does.

电热水壶烧水快而且方便，不过它们的燃料——来自全国电网的电——产生每单位热量所排放的温室气体是自己在家烧煤气的3倍。

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Shanghai electricity company, the Chongming electricity company (hereinafter jointly referred to as electricity company) are the marketing unit of green electricity in this Municipality.

上海市电力公司、崇明电力公司(以下统称“电力公司”)是本市绿色电力的营销单位。

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The solar mission in its first phase focused on areas already connected to the grid and had a pricing system that bundled four units of thermal electricity with one unit of solar-based power, which reduced the average per-unit cost of solar electricity.

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The council said the project was only possible due to a government subsidy which made a payment for every unit of electricity generated by solar panels.

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He said well-designed systems can operate effectively in the UK, delivering in excess of three units of heat for every unit of electricity used to pump the heat in and around the property.

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