ESN – Germany will be the first country where PV+storage will become profitable. Startup Sonnenbattery, which sells PV+batteries software, has sold 1300 units.
http://www.greentechmedia.com/articles/read/is-germany-the-hot-spot-for-battery-backed-solar
Arpa-e launched $30m funds for projects studying solutions for a better integration of PV into the US solar mix, including hybrid (i.e. thermal & electrical) storage solution. According to Arpa-e, PV curtailments could begin in California with only 12% of PV in the electricity mix. It also states that :”A recent analysis finds that a new German program offering up to 660 EUR/kW subsidy for storage tied to PV will not lower battery payback periods enough to induce new investment.”
http://www.greencarcongress.com/2013/07/focus-20130717.html
German utilities are currently considering shutting down unprofitable conventional power plants.
http://www.germanenergyblog.de/?p=13691