One of Illinois’ utility watchdogs is promising to study a new rate hike request by central and southern Illinois’ largest energy provider. 

Ameren Illinois has asked the Illinois Commerce Commission for a $64-million increase in delivery charges, which it says will help pay for improvements like storm-hardening equipment and other updates to the grid-like stronger wires and poles and new substations. That would work out to an additional $2.75 on an average customer's bill, according to the utility. Citizens Utility Board spokesman Jim Chilsen says they will be looking closely at the request.

The Illinois Commerce Commission will hold hearings and take comments over the next eight months or so before rendering a decision. If approved, the new rates would take effect early next year.