Illinois’ two largest utilities have filed new plans to upgrade infrastructure statewide, after regulators rejected previous proposals.

Capitol News Illinois reports Ameren Illinois and Commonwealth Edison refiled so-called grid plans which outline more than $9 billion in spending around the state to improve the electric grid. The companies say spending will go toward things like making the grid more resilient, improving electric vehicle infrastructure and lowering the chances of blackouts.

The plans will likely mean increases in electric rates, with the average ComEd customer’s bill going up by almost $100 annually by 2027, according to the company. 

Last December, the Illinois Commerce Commission rejected previous versions of the plans, citing a lack of transparency and unclear benefits to customers. Since then, environmental and consumer advocates have been meeting with the utilities to offer input. The new plans cut proposed spending by about 10 to 15 percent from the previous versions. 

The ICC is expected to rule on the plans in December, with new rates going into effect in January 2025.