That means electrical storage, typically in an electrochemical battery, but capacitors also store and discharge electricity.

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If the electrical storage of composites could be boosted close to that of existing lithium-ion batteries, then it would take only the roof, the bonnet and the boot lid to power an electric vehicle for 130km, he says.

ECONOMIST: Carbon-composite batteries

Low-frequency electrical stimulation prompts urine storage.

ECONOMIST: We can rebuild him. We have the technology

More exotic solutions include flywheel energy storage (converting mechanical to electrical energy, and vice versa).

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The third technology is the combination of the first two: that is, the rapid storage and rapid transmission of electrical energy.

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The storage rooms near the grain silos have been gutted and left empty, circuit breakers ripped out of electrical boxes, leaving only a few dangling wires.

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