But for technologies such as wind and solar, the needed massive amounts of storage remain a problem.Cost is no picnic either -- per <a href="http://www.ft.com/intl/cms/s/0/be69a732-ab5a-11e2-8c63-00144...">http://www.ft.com/intl/cms/s/0/be69a732-ab5a-11e2-8c63-00144...</a> , BMW sited a new plant in the US because in Germany it pays 6 times more for electricity (even though I hear industrial users in Germany do not pay anywhere as much as residential users, saddled with rene