Rooftop Solar Batteries, Too Costly

Residential solar systems typically send power to the grid,
. . . not directly to the house, and don’t run the home during a blackout.

Residential solar plus storage isn’t ready yet,
. . . Lithium batteries cost too much to be used for just emergency backup power.

For batteries to save consumers money,
. . . stored energy must be drained daily,
. . . said Jamie Evans, who runs the U.S. Eco Solutions unit for Panasonic Corp.,
. . . which supplies lithium-ion cells for Tesla Motors Inc.

10-24-2014 Source:  Rooftop Solar Batteries, Too Costly