Journal of Power Sources has a paper "Cost-minimized combinations of wind power, solar power and electrochemical storage, powering the grid up to 99.9% of the time".

The lowest cost combinationof wind, solar and storage for the northeast United States for all renewable option for 2030

by noreply@blogger.com (brian wang)

Journal of Power Sources has a paper "Cost-minimized combinations of wind power, solar power and electrochemical storage, powering the grid up to 99.9% of the time".http://nextbigfuture.com/2012/12/the-lowest-cost-combinationof-wind.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+blogspot%2Fadvancednano+%28nextbigfuture%29