Today, energy storage is a $33 billion global industry that generates nearly 100 gigawatt-hours of electricity per year.

如今，能源储存是价值330亿美元的全球化产业，每年产生近1000亿瓦时的电力。

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In areas where the wind dies down, backup electricity from a utility company or from an energy storage system becomes necessary.

在风能不稳定的一些地区，需要供电事业公司或者能量储存系统来提供备用电能。

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All organisms, therefore, allocate energy to growth, reproduction, maintenance, and storage.

因此，所有的生物体都把能量分配给生长、繁殖、维持和储存。

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In the future, solar and wind developers may be required to pay for storage, either through a rate schedule or by investing in their own storage devices to balance services, said Janice Lin, co-founder and director of California Energy Storage Alliance (CESA), a coalition working to expand the role of energy storage to promote the growth of renewable energy.

FORBES: Energy Storage Critical to Solar Industry

The second-biggest form of bulk-energy storage, though it is dwarfed by PSH, is compressed-air energy storage (CAES).

ECONOMIST: Energy storage

The grid also provides a substitute for energy storage from renewable energy systems.

FORBES: The Good Grid and why bragging about being "off the grid" is silly