Q&A: Can renewables alone (with storage) power the grid?

Q&A: Can renewables alone (with storage) power the grid?
Midwest Energy News
Conventional wisdom among many utilities and analysts says that renewable energy is expensive and unreliable because the wind doesn't always blow and the sun doesn't always shine when electricity demand is highest, and because grid-scale storage is ...http://www.midwestenergynews.com/2013/01/11/qa-can-renewables-alone-witih-storage-power-the-grid/