The Illinois Commerce Commission (ICC) struck $11.2 million from Ameren Illinois’ $59.6 million multi-year rate reconciliation request. The decision is the first in a new performance-based evaluation process designed to reconcile actual utility spending with the approved investments outlined in the utility’s multi-year grid and rate plans.
ICC Chair Doug Scott says their responsibility is to balance the interests of Illinois’ utilities and their consumers, and the new grid planning process is designed to hold the state’s largest electric utilities accountable for their performance.
“The ICC’s decision reiterates that unsupported departures from Ameren’s approved grid plan are inconsistent with the goals of the grid planning process, and it is the utility’s responsibility to prove that any adjustments made are reasonable and prudent for maintaining our power system.”
The decision requires Ameren to include affordability data updates and cost benefit analyses of related grid plan projects in future rate reconciliation dockets to allow the ICC and relevant stakeholders to evaluate the impact of Ameren’s grid plan in real time.
The impact of the decision on individual customers will vary based on service class and energy usage.
Ameren Illinois serves 1.2 million electric customers in central and southern Illinois. More information regarding Ameren’s annual reconciliation can be found in Docket No. 25-0382.
