Panasonic announces battery that can store enough energy to power a house for a week. This could be interesting.

“We’ll be the first to bring to the market a storage battery for home use, which can store sufficient electricity for about one week of use,” said Fumio Otsubo, president of Panasonic, in a recent interview with The Yomiuri Shimbun.

On Monday, Panasonic announced it has officially acquired a more than 50 percent stake in Sanyo.

It has become Japan’s second-largest electronics giant, next to Hitachi, Ltd., with anticipated combined sales of 8.66 trillion yen for the business year ending in March.