[pbowyer]

> One thing I'm fairly confident of is that just having batteries (without solar panels) to do peak-flattening temporal "arbitrage" can't make economic sense. If it did, power companies would do it themselves and keep the profit.

They're trialling that right now in the UK: http://www.itv.com/news/anglia/2014-12-15/power-boost-as-big... http://www.edie.net/news/6/Smarter-Network-Storage-Energy-ba...