Great comment you posted. I'm still getting up to speed on the battery side of solar, as it's not very cost effective here in much of the east coast and the demand isn't there. (until another Superstorm Sandy comes thru). After Sandy companies in NJ / NY were selling a TON of generators. Now that market has gone quiet.
I expect when the next storm hits up here it will push for more battery backups. Hopefully, Tesla, Sonnen and others will make it much more practical and cost-effective enough to go with that.