Universal Power: Tech companies aim to untangle power supplies

Elsa Wenzel: "Oh, what a tangled web we weave when plugging in and powering personal electronics whose chargers are so varied that they typically end up balled up in rat's nests beneath our desks.

Help, albeit slow, is on the way, according to members of consumer electronics companies, green-tech start-ups, and venture capital firms at the Alliance for Universal Power Supplies conference Friday.

Attendees charging ahead to create power supplies that cause fewer headaches and wasted energy found hope when Westinghouse announced that it will support standards from start-up Green Plug, whose Greentalk protocol enables devices and power sources to "talk" to each other."

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