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UNITED STATES - CIRCA 1911: Inventor and physicist Thomas Alva Edison (1847 - 1931) looking at a lightbulb (Photo by Nathan Lazarnick/George Eastman House/Getty Images)
UNITED STATES - CIRCA 1911: Inventor and physicist Thomas Alva Edison (1847 - 1931) looking at a lightbulb (Photo by Nathan Lazarnick/George Eastman House/Getty Images)

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Updating Edison's power grids

CNN's Richard Quest finds out how an innovative energy development in Mannheim, Germany uses technology to monitor electricity levels.

Updating Edison's power grids

CNN's Richard Quest finds out how an innovative energy development in Mannheim, Germany uses technology to monitor electricity levels.