11/23/2011 03:37 pm ET

The World's Most Efficient Office

Sanyo’s massive manufacturing facility in a rural area just outside of Osaka, Japan serves as a massive testing facility for energy-saving technology that could soon pop up in the U.S. The Kasai Plant’s Green Energy Park houses a 1 MW “Mega Solar System” and a 1.5 MWh lithium-ion mega battery system that holds the world’s largest level of charging capacity. (We were amazed, too.)

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