"Elon Musk Bulks Up Tesla Batteries in Leap Beyond Cars to Grid"

"Billionaire Elon Musk thinks he can pave the way to a better energy future by turning the mattress-shaped batteries in Tesla’s electric car into upright pillars so they can be used to power homes, businesses and even utilities.

Musk will lift the veil Thursday on a new generation of batteries designed to store growing volumes of solar and wind energy. If he gets it right, Tesla Motors Inc. will have spun a significant second business off the technology originally designed for its electric vehicles -- and will gain a toehold in a business projected to generate tens of billions of dollars in a decade.

Nobody in the power industry has yet been able to come up with a cost-effective way to store large volumes of energy for later distribution. Tesla is making a bet that its huge $5 billion “gigafactory” currently under construction near Reno, Nevada, will enable the mass production needed to drive down the cost of batteries and make them competitive for a broad range of customers, including traditional suppliers of electricity."

Mark Chediak and Dana Hull report for Bloomberg April 28, 2015.