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The Tokyo Electric Power Co. (TEPCO) has selected the Wi-SUN Alliance specification for the wireless protocol between smart meters and home energy management systems (HEMS) for its Wireless B route. TEPCO plans to deploy 27 million smart meters over the next 10 years.

The Wi-SUN Alliance says that its ECHONET-Lite specification version 2 was made available for product development in August. The specification provides for fully interoperable, multiple vendor implementations, helping to simplify technology selection, installation and maintenance for consumers and custom installers alike, according to the association. It includes an authentication and encryption process between smart meters and HEMS and between HEMS and home electrical appliances.

"This marks a major success for Wi-SUN Alliance," says Chairman Phil Beecher. "Our members have developed broad global specifications supported by a robust, open testing and certification process. We have also worked extensively with other stakeholders to map these specifications to regional needs."

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