Comment Re:Boom. (Score 5, Insightful) 325
The idea really isn't to backup your power during an outage. The idea is to store power collected with on-site measures such as solar/wind and use the battery during times when these local power measure's aren't supplying enough. Another point would be to purchase power from the electric company when demand is low, and store for use when demand is high. Power companies could signal that demand is too high and the load is about cause problems, and people could switch to their reserves, in order to prevent damage to the grid. (Such as happens frequently when everybody runs their air coolers in the summer).
I think that this would be a good measure to prevent the problems that cause blackouts, but I don't think it should, in all cases, be the consumer putting forth the effort to fix things. (At least in the US they need fixing). The power companies should put a few of these in the ground, and THEY can activate them when the need is there, rather than asking customers to handle it for them. Else they can damn well charge us a lot less than 60 cents per kilowatt hour. (Newark).