Interesting possibility...
http://marketrealist.com/2016/04/ameren-looking-expand-kansas-buying-westar-energy/ (http://marketrealist.com/2016/04/ameren-looking-expand-kansas-buying-westar-energy/)
Reading some of the other articles, it seems the regulated utilities are so attractive because of their consistent growth and revenue. I'd dare say the smaller the footprint, the better based on the data they're reporting.