The firm said it continuously monitors track, signalling, overhead power supply and other equipment for ageing and degradation.

BBC: England

In electric trains, the braking energy is converted into electricity and fed back into the overhead power supply.

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There is huge supply overhead.

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Eliminating some of the overhead won't reduce the supply or increase the demand for oil, but it will reduce the overall cost of getting it to market.

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Renegotiated supply agreements will radically improve company gross margins and Mr. Pyatt has also made significant overhead reductions.

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Local controllers (X-NET) gather this information and deliver to a web-controller via GPRS. The overhead sensors are line powered, and the X-NET Controller can be powered by a low voltage supply or a solar panel.

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