Off-grid solar cells are also quiet, but they don’t make much power relative to the mini-turbine.

离网太阳能电池也非常安静，但它们无法产生相对于小型涡轮机那么大的电能。

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To pump energy back into the grid, some of the rotational energy is bled off to power a generator on the main shaft.

把电能又送回电网时，就释放一部分转动的动能，开动位于主轴的发电机。

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The first terrestrial solar cells were used for off-grid applications in remote locations where placing conventional power lines was not possible or economical.

第一批面市的太阳能电池在偏远的“非电网”动力系统中派上了用途。 这些地区因地理或经济原因无法接通常用电力网。

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For some off-griders, it's a matter of having little or no impact on the environment -- literally living off the power grid.

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Chowdhury, who formerly headed up IT for the Grameen Bank, describes what happened in off-the-grid Bangladeshi villages when her team put solar power and mobile technology into the hands of illiterate women.

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