Has Elon Musk solved the climate crisis?

I just watched this video of Elon Musk revealing Tesla’s new “Powerwall”, a battery pack for the home. The Powerwall can store energy from solar panels when the sun’s shining and then deliver this stored energy to the home when it’s dark. I have to say it sounds wonderful and Elon Musk had me convinced right from the start. It almost sounds too good to be true. I hope it’s not.

More here: http://www.theverge.com/2015/5/1/8525309/tesla-energy-elon-musk-battery-announcement