One thing they are forgetting about is the Vars.
Reactive power, which is measured in VARs (volt-ampere-reactive),
is the component of electricity that maintains the proper level of
voltage in transmission lines to drive "real power," which is measured
in Watts, through the power lines to customers. 

(The Iberdrola people probably don't even know what Vars are :)

Generators absorb Vars. When Russell and Unit 12 at Bee Bee were all
removed from service the system went berzerk because of the loss of Var absorption. 

The ISO (Independent system operator) - the old state power authority - pays Ginna
for proving it can provide 100 positive vars to the system if needed.