Utility Commission Filings
Included below are certain Ameren regulatory filings. These filings were selected based on Ameren's judgment as to their relevance and importance. This list does not include all filings made by all Ameren companies.

Ameren is unable to predict the ultimate outcome of pending regulatory proceedings, the timing of the final decisions of the various agencies, or the impact on our results of operations, financial position or liquidity.
Select Filings with the Illinois Commerce Commission (ICC)
  • Ameren Illinois Electric Delivery Service Rate Case
    Case No. 15-0305
    Description: On April 24, 2015, Ameren Illinois filed a required formula rate update filing with the ICC. As updated, this filing proposes a $109 million net annual rate increase which is comprised of three components. First, it proposes a $66 million annual rate increase reflecting 2014 recoverable costs and expected 2015 net plant additions in accordance with the rate formula. Second, the filing reflects a $112 million surcharge, which includes interest, related to under collection of 2014 costs. Finally, the filing reflects the absence of $69 million related to the under collection of 2013 costs which is being recovered from customers in 2015. The ICC is scheduled to issue a decision in December 2014 and new rates are to be effective in January 2015.

  • Ameren Illinois Natural Gas Delivery Rate Case
  • Case No. 15-0142
    Description: On January 23, 2015, Ameren Illinois filed a request with the ICC seeking approval to increase its annual natural gas delivery service revenues. The updated amount of this request is $45 million and is driven primarily by infrastructure investments and gas storage, transmission and other operating expenses made to better serve customers. We expect an ICC decision in December 2015 with new rates effective January 2016.

Find other filings and information on the Illinois Commerce Commission website.

Select Filings with the Missouri Public Service Commission (MoPSC)

  • Ameren Transmission Company of Illinois Request for Certificate of Public Convenience and Necessity for Mark Twain Transmission Project
    Docket No. EA-2015-0146
    Description: In June 2015, ATXI made a filing with the MoPSC requesting a certificate of convenience and necessity for the Mark Twain project. The Mark Twain project is a MISO-approved 100-mile transmission line located in northeast Missouri. A decision is expected from the MoPSC in 2016.
Find other filings and additional information on the Missouri Public Service Commission website.

Select Filings with the Federal Energy Regulatory Commission

  • Complaints challenging Midcontinent Independent System Operator, Inc. (MISO) base allowed return on equity.
    Docket Nos. EL14-12 and EL15-45 

Find additional information on the Federal Energy Regulatory Commission website.
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