%0 Journal Article %A Andrew D Mills %A Ryan H Wiser %B Wind Energy %D 2013 %N 11 %P 1711 - 1726 %R 10.1002/we.1663 %T Changes in the economic value of wind energy and flexible resources at increasing penetration levels in the Rocky Mountain Power Area %V 17 %8 11/2014 %! Wind Energ.