The CHAdeMO fast charging protocol was developed by the Tokyo Electric Power Company (TEPCO) along with Toyota, Nissan, Mitsubishi and Fuji Heavy Industries (Subaru), CHAdeMO, a DC fast-charging protocol for electric vehicles, is used for all Level 3 chargers in Japan, but the U.S. has been reluctant to apply this single open standard to govern the quick-charge stations that either already are, or will soon be, installed here. However, according to the Japanese news outlet the Yomiuri Shimbun, the U.S. will take a stab at trying out the CHAdeMO system by installing 310 quick-charge stations throughout Arizona, California, Texas, Tennessee, Oregon and Washington State.
The Yomiuri Shimbun claims that the installation of the CHAdeMO chargers in the U.S. is:
The first time a large number of quick chargers using the CHAdeMO method will be used overseas and is seen as an initial step toward the Japan system becoming the world standard.
Industry observers agree, pointing out that successful testing of the quick-charge systems in the U.S. could lead to global adoption of the CHAdeMO protocol.

[Source: Green Car Congress]

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