01/24/2009 05:12 am ET Updated May 25, 2011

On-Demand Street Lights Save Tons Of Energy

One town in northwest Germany is turning off its street lights at 9 pm to save electricity and money. Rather than imposing an unintentional curfew, the move is giving residents on-demand lighting.

The BBC reported this morning that in Doerentrup, a local engineer came up with a system so that anyone wanting see the way registers for free online, dials a central number, punches in a street code, and the lights they need will come on for several minutes. Although residents pay for the calls, the town collectively saves money on electricity.

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