January 21, 2012

PAYING FOR THEMSELVES:

Car Batteries Are Not Just For the Car (MATTHEW L. WALD, 1/20/12, NY Times)

Coda Holdings will make minor modifications to battery packs for its cars, which use Chinese-manufactured lithium iron phosphate cells, and sell them individually or grouped together -- both for storing solar power when homeowners' rooftop panels generate more than they use, and to help businesses reduce their peak loads. Business customers usually pay for electricity on the basis of their highest level of use.

Because the packs are designed for cars, they are already modular and thus easy to scale up or scale down. Coda plans to sell its sedan with a battery pack of 31 kilowatt-hours or 36 kilowatt-hours; both numbers are roughly what a suburban house uses per day. The stationary module will be 40 kilowatt-hours.

The batteries could also pay for themselves in places where peak-hour power costs more than off-peak power, the company says, although very few places have such "time of use" rates today.

Posted by at January 21, 2012 12:23 PM
  

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