PUBLIC NOTICE Notice of Proposed Tariff Changes Gas Service Schedule llI. C. C. No. 2 To the Gas Patrons of Ameren Illinois Company d/b/a Ameren Illinois: Ameren Illinois (or "Company") hereby gives notice to the public that on January 23, 2015, it has filed with the Illinois Commerce Commission ("lCC" or "Commission") proposed changes in its rates and charges, terms and conditions of service for natural gas delivery services throughout its territory in the State of Illinois. The proposed changes are applicable to Rate Zones I, ll and Ill. The changes in rate schedules are proposed to take effect on or about January 1, 2016, after hearings and afte the Commission issues its final Order. This filing is designed to increase Ameren Illinois' gas delivery service base rate revenues by 14.8 percent based upon a 2016 future test year and includes various rate design proposals, and proposals for new or modified services. The rates for delivery service constitute only a portion of the total bill of a customer taking bundled natural gas service from Ameren Illinois, or taking supply (transportation) service from a third-party supplier. For the GDS-1 Residential Delivery Service classification, the proposed changes result in 10.7, 25.4 and 10.7 percent increases in the gas delivery service revenue for Rate Zones I, ll and Ill, respectively. Under the Company’s proposal, for a residential customer using 530 therms annually (or approximately 44 therms monthly), the effect of the delivery service increase and otherchanges being proposed by Company produce 5.7, 12.5 and 5.7 percent average monthly bill increases (or $2.90, $5.96 and $2.90 monthly) for bundled service in Rate Zones I, ll and Ill, respectively. For a residential customer using 745 therms annually (or approximately 62 therms monthly), the effect of the delivery service increase and other changes being proposed by Company produce 4.9, 10.9 and 4.9 percent average monthly bill increases (or $3.06, $6.41 and $3.06 monthly) for bundled service. For a residential customer using 934 therms annually (or approximately 78 therms monthly), the effect of the delivery service increase and other changes being proposed by Company produce 4.4, 9.9 and 4.4 percent average monthly bill increases (or $3.20, $6.81 and $3.20) for For non-residential customers, the proposed changes in gas delivery service revenue for each of the three rate zones are: For GDS-2 Small General Delivery Service classification, 19.0%, 18.8% and 12.5% percent increases for Rate Zones I, ll and Ill, respectively; For GDS-3 Intermediate General Delivery Service classification, 17.5%, 29.2%, and 11.5% percent increases for Rate Zones I, ll and Ill, respectively; For GDS-4 Large General Delivery Service classification, 24.6%, 11.8% and 20.5% percent increases for Rate Zones I, ll and Ill, respectively; For GDS-5 Seasonal Delivery Service classification, 20.9%, 18.3% and 18.6% percent increases for Rate Zones I, ll and lIl, respectively; and For GDS-7 Special Contract Service classification, there are no proposed changes to delivery service rates. A copy of the proposed change in schedule may be inspected at the Ameren Illinois offices at 300 Liberty Street, Peoria, Illinois or online at www.icc.illinois.gov/edocket/. Customers should be advised that the Commission may alter or otherwise amend the rates or conditions of service after hearings are held pursuant to 83 Ill. Adm. Code. 200, and may increase or decrease individual rates in amounts other than those requested by Ameren Illinois. All parties interested in this matter may obtain information with respect thereto either directly from Amere Illinois or by addressing the Chief Clerk of the Illinois Commerce Commission, 527 East Capitol Avenue Springfield Illinois 62706. AMEREN ILLINOIS COMPANY d/b/a Ameren Illinois By: Richard J. Mark, President & CE