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Solar batteries may soon light up US homes

Tesla set to unveil this week a new, noiseless easy-to-install battery

Tesla is building a US$5 billion factory in the Nevada desert that it says will drive the prices of batteries usable in homes and cars down by 30 per cent.

Rockville, United States

THE future of home energy sits in Josh and Susan Fried's basement near shelves of old tools and canned soup, an unadorned box the size of a wine cooler filled with a dozen silent batteries.

Annoyed by blackouts, the retired dentist and his wife paid US$50,