vWIND is defined as @variable(Dispatch_Model, vWIND[w in WND, T] >=0) but you indexed it as vWIND[t,w].
It should probably be vWIND[w, t]
vWIND is defined as @variable(Dispatch_Model, vWIND[w in WND, T] >=0) but you indexed it as vWIND[t,w].
It should probably be vWIND[w, t]