Ameren Illinois Operating CompaniesOriginal Sheet No. 1
FERC Electric Tariff
Original Volume No. 1
AMEREN ILLINOIS OPERATING COMPANIES
FERC ELECTRIC TARIFF
ORIGINAL VOLUME NO. 1
ANCILLARY SERVICES TARIFF
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: November 2, 2006
Ameren Illinois Operating CompaniesOriginal Sheet No. 1
FERC Electric Tariff
Original Volume No. 1
1.Definitions
1.1.Ameren Illinois Control Area
1.2.Ameren Illinois Operating Companies
1.3.Ancillary Services
1.4.Control Area
1.5.Control Area Operator
1.6.Commission
1.7.Designated Agent
1.8.Delivery Service Tariff:
1.9.Distribution Facilities
1.10.Eligible Customer
1.11.Good Utility Practice
1.12.Network Integration Transmission Service
1.13.Network Load:
1.14.Point-To-Point Transmission Service
1.15.Service Agreement
1.16.Tariff
1.17.Transmission Customer
1.18.Transmission Owner
1.19.Transmission Provider
1.20.Transmission Service
1.21.Transmission System
1.22.Wholesale Distribution Service
2.Wholesale Distribution Service
3.Ancillary Services
3.1.Regulation and Frequency Response Service
3.2.Operating Reserve - Spinning Reserve Service
3.3.Operating Reserve - Supplemental Reserve Service
4.Regulatory Filings
SCHEDULE 3
SCHEDULE 5
SCHEDULE 6
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: November 2, 2006
Ameren Illinois Operating CompaniesOriginal Sheet No. 1
FERC Electric Tariff
Original Volume No. 1
- Definitions
- Ameren Illinois Control Area: The Control Area represented by the service territories of Central Illinois Light Company, d/b/a AmerenCILCO, Central Illinois Public Service Company d/b/a AmerenCIPS, and Illinois Power Company d/b/a AmerenIP.
- Ameren IllinoisOperating Companies: Central Illinois Light Company, d/b/a AmerenCILCO, Central Illinois Public Service Company d/b/a AmerenCIPS, and Illinois Power Company d/b/a AmerenIP.
- Ancillary Services: Those services that are necessary to support the transmission of capacity and energy from resources to loads while maintaining reliable operation of the Transmission System in accordance with Good Utility Practice.
- Control Area: An electric power system or combination of electric power systems to which a common automatic generation control scheme is applied in order to:
(1)match, at all times, the power output of the generators within the electric power system(s) and capacity and energy purchased from entities outside the electric power system(s), with the load within the electric power system(s);
(2)maintain scheduled interchange with other Control Areas, within the limits of Good Utility Practice;
(3)maintain the frequency of the electric power system(s) within reasonable limits in accordance with Good Utility Practice; and
(4)provide sufficient generating capacity to maintain operating reserves in accordance with Good Utility Practice.
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: November 2, 2006
Ameren Illinois Operating CompaniesOriginal Sheet No. 1
FERC Electric Tariff
Original Volume No. 1
1.5.Control Area Operator: Ameren Services Company on behalf of AmerenCILCO, AmerenCIPS and AmerenIP.
1.6.Commission: The Federal Energy Regulatory Commission, or its successor.
1.7.Designated Agent: Any entity that performs actions or functions required under the Tariff on behalf of the Transmission Provider, an Eligible Customer, theTransmission Customer or the Control Area Operator.
1.8.Delivery Service Tariff: The unbundled retail tariffs of the Transmission Owner(s) as approved by the Illinois Commerce Commission.
1.9.Distribution Facilities: Transmission Owner’s low-voltage transmission facilities used in a sale for resale of, or to transmit, electric energy in interstate commerce on behalf of a wholesale purchaser pursuant to a Commission filed Open Access Transmission Tariff (i.e., to provide Wholesale Distribution Service).
1.10.Eligible Customer: (i) Any electric utility (including the Transmission Owner and any power marketer), Federal power marketing agency, or any person generating electric energy for sale for resale is an Eligible Customer under the Tariff. Electric energy sold or produced by such entity may be electric energy produced in the United States, Canada or Mexico. However, with respect to transmission service that the Commission is prohibited from ordering by Section 212(h) of the Federal Power Act, such entity is eligible only if the service is provided pursuant to a state requirement that the Transmission Owner offer the unbundled transmission service, or pursuant to a voluntary offer of such service by the Transmission Owner. (ii) Any retail customer taking unbundled transmission service pursuant to a state requirement
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: November 2, 2006
Ameren Illinois Operating CompaniesOriginal Sheet No. 1
FERC Electric Tariff
Original Volume No. 1
that the Transmission Owner offer the transmission service, or pursuant to a voluntary offer of such service by the Transmission Owner, is an Eligible Customer under the Tariff.
1.11.Good Utility Practice: Any of the practices, methods and acts engaged in or approved by a significant portion of the electric utility industry during the relevant time period, or any of the practices, methods and acts which, in the exercise of reasonable judgment in light of the facts known at the time the decision was made, could have been expected to accomplish the desired result at a reasonable cost consistent with good business practices, reliability, safety and expedition. Good Utility Practice is not intended to be limited to the optimum practice, method, or act to the exclusion of all others, but rather to be acceptable practices, methods, or acts generally accepted in the region.
1.12.Network Integration Transmission Service: The Transmission Service provided under Module B of the Tariff.
1.13.Network Load: The load that a customer designates for Network Integration Transmission Service under Module B of the Tariff.
1.14.Point-To-Point Transmission Service: The reservation and transmission of capacity and energy on either a firm or non-firm basis from the Point(s) of Receipt to the Point(s) of Delivery under Module B of the Tariff.
1.15.Service Agreement: The initial agreement and any amendments or supplements thereto entered into by the Transmission Customer and the Transmission Provider for service under the Tariff.
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: November 2, 2006
Ameren Illinois Operating CompaniesOriginal Sheet No. 1
FERC Electric Tariff
Original Volume No. 1
1.16.Tariff: The open access transmission tariff of the Transmission Provider.
1.17.Transmission Customer: Any Eligible Customer (or its Designated Agent) that (i) executes a Service Agreement, or (ii) requests in writing that the Transmission Provider file with the Commission, a proposed unexecuted Service Agreement to receive Transmission Service under Module B of the Tariff. This term is used in the Module A Common Tariff Provisions to include customers receiving Transmission Service under Module B of the Tariff.
1.18.Transmission Owner: Central Illinois Light Company, d/b/a AmerenCILCO, Central Illinois Public Service Company d/b/a AmerenCIPS, and Illinois Power Company d/b/a AmerenIP.
1.19.Transmission Provider: The Midwest Independent Transmission System Operator, Inc. (MISO), or its successor organization.
1.20.Transmission Service: Point-To-Point Transmission Service provided under Module B of the Tariff on a firm and non-firm basis and Network Integration Transmission Service under Module B of the Tariff.
1.21.Transmission System: The facilities owned by AmerenCILCO, AmerenCIPS and AmerenIP that are used by the Transmission Provider to provide Transmission Service under Module B of the Tariff in the Ameren Control Area.
1.22.Wholesale Distribution Service: The transmission of electric energy in interstate commerce over Transmission Owner’s Distribution Facilities pursuant to a Commission accepted Open Access Transmission Tariff.
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: November 2, 2006
Ameren Illinois Operating CompaniesSubstitute Original Sheet No. 6
FERC Electric Tariff Superseding Original Sheet No. 6
Original Volume No. 1
- Wholesale Distribution Service
A Transmission Customer currently paying for Wholesale Distribution Service through an existing Service Agreement or Wholesale Distribution Service Agreement will continue paying the existing rate for Wholesale Distribution Service until such time as its Service Agreement and/or Wholesale Distribution Service Agreement either terminates or is amended consistent with its terms.
Until its Service Agreement terminates, a Transmission Customer connected to AmerenIP Distribution Facilities shall continue to reimburse AmerenIP based on either (a) the identified gross plant balance of the facilities to be directly assigned multiplied by an annual gross plant fixed charge rate of 10.82%, or (b) the identified net plant balance of the facilities to be directly assigned multiplied by an annual net plant fixed charge rate of 20.80%. The Transmission Customer will be billed one-twelfth of the annual costs for each month.
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: January 24, 2007
Filed to comply with order of the Federal Energy Regulatory Commission, Docket No. ER07-153, issued December 29, 2006, 117 FERC ¶ 61,358 (2006).
Ameren Illinois Operating CompaniesSecond Substitute Original Sheet No. 7
FERC Electric Tariff Superseding Substitute Original Sheet No. 7
Original Volume No. 1
- Ancillary Services
The Ancillary Services provided by the Control Area Operator pursuant to Section 3 of the Tariff are as follows:
3.1.Regulation and Frequency Response Service: Where applicable, the rates and/or methodology are described in Schedule 3.
3.2.Operating Reserve - Spinning Reserve Service: Where applicable, the rates and/or methodology are described in Schedule 5.
3.3.Operating Reserve - Supplemental Reserve Service: Where applicable, the rates and/or methodology are described in Schedule 6.
- Regulatory Filings
Nothing contained in the Tariff shall be construed as affecting in any way the right of the Control Area Operator or Transmission Owner(s) to unilaterally make application to the Commission for a change in the rates, terms and conditions set forth in this Ancillary Services Tariff under Section 205 of the Federal Power Act and pursuant to the Commission's rules and regulations promulgated thereunder.
Nothing contained in the Tariff or any Service Agreement shall be construed as affecting in any way the ability of any Eligible Customer receiving service under the Tariff to exercise its rights under the Federal Power Act and pursuant to the Commission’s rules and regulations promulgated thereunder.
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: May 30, 2007
Filed to comply with order of the Federal Energy Regulatory Commission, Docket No. ER07-153, issued December 29, 2006, 117 FERC ¶ 61,358 (2006).
Ameren Illinois Operating CompaniesOriginal Sheet No. 1
FERC Electric Tariff
Original Volume No. 1
SCHEDULE 3
Regulation and Frequency Response Service
Regulation and Frequency Response Service is necessary to provide for the continuous balancing of resources (generation and interchange) with load and for maintaining scheduled interconnection frequency at sixty cycles per second (60 Hz). Regulation and Frequency Response Service is accomplished by committing on-line generation whose output is raised or lowered (predominantly through the use of automatic generating control equipment) as necessary to follow the moment-by-moment changes in load. The obligation to maintain this balance between resources and load lies with the Transmission Provider (or the Control Area Operator that performs this function for the Transmission Provider). The Transmission Provider must offer this service when the Transmission Service is used to serve load within the Ameren Illinois Control Area. The Transmission Customer must either purchase this service from the Transmission Provider or make alternative comparable arrangements to satisfy its Regulation and Frequency Response Service obligation. The amount of and charges for Regulation and Frequency Response Service are set forth below. To the extent the Control Area Operator performs this service for the Transmission Provider, charges to the Transmission Customer are to reflect only a pass-through of the costs charged to the Transmission Provider by the Control Area Operator.
Since the Control Area Operator does not own generation facilities to provide this service, the Control Area Operator will obtain this service from generating facilities capable
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: November 2, 2006
Ameren Illinois Operating CompaniesSecond Substitute Original Sheet No. 9
FERC Electric Tariff Superseding Substitute Original Sheet No. 9
Original Volume No. 1
of providing this service. The Control Area Operator will pass-through the actual cost paid for this service to Transmission Customers. The actual costs will be passed-through using a two-part rate design. A fixed monthly rate will be determined based on one-twelfth of the estimated annual cost to be paid to generators providing the service, divided by the divisor used in determining the Transmission Owners’ currently effective transmission rate under MISO’s Attachment O. The fixed monthly rate will be updated on June 1st to incorporate the new Attachment O divisor and, if applicable, on the first day of the month following any changes to the ancillary service suppliers’ rates or changes in the quantity of the service purchased. A variable monthly rate will be determined based on the difference between the actual revenues collected for all prior periods, beginning with the effective date of this Ancillary Services Tariff, compared to the actual costs incurred by the Transmission Owners for the prior periods divided by the same divisor as above. Upon request, a Transmission Customer will be provided calculations supporting the fixed monthly rate and the variable monthly rate.
The fixed and variable rates shall be applied to reserved quantities for Point-to-Point Transmission Service and to the Customer’s Network Load for Network Integration Transmission Service to determine the monthly charges. The fixed monthly rate and the variable monthly rate will be converted to weekly, daily and hourly rates if needed to bill Point-to-Point Transmission Service in accordance with Commission precedent.
This rate design will remain in effect until the Control Area Operator or the Transmission Owner(s) files changes with the Commission or until the MISO establishes a
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: May 30, 2007
Filed to comply with order of the Federal Energy Regulatory Commission, Docket No. ER07-153, issued April 30, 2007, 119 FERC ¶ 61,098 (2007).
Ameren Illinois Operating CompaniesSubstitute Original Sheet No. 9A
FERC Electric Tariff Superseding Original Sheet No. 9A
Original Volume No. 1
competitive ancillary service market for this service. However, any over-recovery by the Transmission Owner will be distributed to Transmission Customers or any under-recovery by the Transmission Owner will be collected from Transmission Customers for the period prior to the termination of this Ancillary Services Tariff as soon as practicable.
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: May 30, 2007
Filed to comply with order of the Federal Energy Regulatory Commission, Docket No. ER07-153, issued April 30, 2007, 119 FERC ¶ 61,098 (2007).
Ameren Illinois Operating CompaniesSubstitute Original Sheet No. 10
FERC Electric Tariff Superseding Original Sheet No. 10
Original Volume No. 1
SCHEDULE 5
Operating Reserve - Spinning Reserve Service
Spinning Reserve Service is needed to serve load immediately in the event of a system contingency. Spinning Reserve Service may be provided by generating units that are on-line and loaded at less than maximum output. The Transmission Provider must offer this service when the Transmission Service is used to serve load within the Ameren Illinois Control Area. The Transmission Customer must either purchase this service from the Transmission Provider or make alternative comparable arrangements to satisfy its Spinning Reserve Service obligation. The amount of and charges for Spinning Reserve Service are set forth below. To the extent the Control Area Operator performs this service for the Transmission Provider, charges to the Transmission Customer are to reflect only a pass-through of the costs charged to the Transmission Provider by the Control Area Operator.
Since the Control Area Operator does not own generation facilities to provide this service, the Control Area Operator will obtain this service from generating facilities capable of providing the service. The Control Area Operator will pass-through the actual cost paid for this service to Transmission Customers. The actual costs will be passed-through using a two-part rate design. A fixed monthly rate will be determined based on one-twelfth of the estimated annual cost to be paid to generators providing the service, divided by the divisor used in determining the Transmission Owners’ currently effective transmission rate under MISO’s Attachment O. The fixed monthly rate will be updated on June 1st to incorporate the new Attachment O divisor and, if applicable, on the first day of the month following any
Issued by:David A. WhiteleyEffective: January 1, 2007
Senior Vice President Energy Delivery Services
Ameren Services Company
Issued on: January 24, 2007
Filed to comply with order of the Federal Energy Regulatory Commission, Docket No. ER07-153, issued December 29, 2006, 117 FERC ¶ 61,358 (2006).
Ameren Illinois Operating CompaniesSecond Substitute Original Sheet No. 11
FERC Electric Tariff Superseding Substitute Original Sheet No. 11
Original Volume No. 1
changes to the ancillary service suppliers’ rates or changes in the quantity of the service purchased. A variable monthly rate will be determined based on the difference between the actual revenues collected for all prior periods, beginning with the effective date of this Ancillary Services Tariff, compared to the actual costs incurred by the Transmission Owners for the prior periods divided by the same divisor as above. Upon request, a Transmission Customer will be provided calculations supporting the fixed monthly rate and the variable monthly rate.
The fixed and variable rates shall be applied to reserved quantities for Point-to-Point Transmission Service and to the Customer’s Network Load for Network Integration Transmission Service to determine the monthly charges. The fixed monthly rate and the variable monthly rate will be converted to weekly, daily and hourly rates if needed to bill Point-to-Point Transmission Service in accordance with Commission precedent.