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Item 2. PROPERTIES

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Item 2. PROPERTIES

For information on our principal properties, see the energy center table below. See also Liquidity and Capital Resources and Regulatory Matters in Management’s Discussion and Analysis of Financial Condition and Results of Operations under Part II, Item 7, of this report for a discussion of planned additions, replacements or transfers. See also Note 5 – Long-term Debt and Equity Financings and Note 14 – Commitments and Contingencies under Part II, Item 8, of this report.

The following table shows the anticipated capability of Ameren Missouri’s energy centers at the time of Ameren Missouri’s expected 2018 peak summer electrical demand:

Primary Fuel SourceEnergy CenterLocationNet Kilowatt Capability(a)
CoalLabadieFranklin County, Missouri2,372,000
Rush IslandJefferson County, Missouri1,178,000
SiouxSt. Charles County, Missouri972,000
Meramec(b)St. Louis County, Missouri591,000
Total coal5,113,000
NuclearCallawayCallaway County, Missouri1,194,000
HydroelectricOsageLakeside, Missouri240,000
KeokukKeokuk, Iowa144,000
Total hydroelectric384,000
Pumped-storageTaum SaukReynolds County, Missouri440,000
Oil (CTs)FairgroundsJefferson City, Missouri55,000
MeramecSt. Louis County, Missouri55,000
MexicoMexico, Missouri54,000
MoberlyMoberly, Missouri54,000
MoreauJefferson City, Missouri54,000
Total oil272,000
Natural gas (CTs)Audrain(c)Audrain County, Missouri608,000
Venice(d)Venice, Illinois491,000
Goose CreekPiatt County, Illinois438,000
PinckneyvillePinckneyville, Illinois316,000
Raccoon CreekClay County, Illinois304,000
Meramec(b)(d)(e)St. Louis County, Missouri281,000
Kinmundy(d)Kinmundy, Illinois208,000
Peno Creek(c)(d)Bowling Green, Missouri192,000
Total natural gas2,838,000
Methane gas (CT)Maryland HeightsMaryland Heights, Missouri8,000
SolarO’FallonO’Fallon, Missouri3,000
Total Ameren and Ameren Missouri10,252,000
(a)Net kilowatt capability is the generating capacity available for dispatch from the energy center into the electric transmission grid.
(b)All coal-fueled kilowatts and 236,000 natural-gas-fueled kilowatts at the Meramec energy center are scheduled for retirement in 2022.
(c)There are economic development lease arrangements applicable to these CTs.
(d)These CTs have the capability to operate on either oil or natural gas (dual fuel).
(e)Two of its three units are steam-powered.

The following table presents in-service electric and natural gas utility-related properties for Ameren Missouri and Ameren Illinois as of December 31, 2017:

Ameren MissouriAmeren Illinois
Circuit miles of electric transmission lines(a)2,9704,638
Circuit miles of electric distribution lines33,41445,899
Percentage of circuit miles of electric distribution lines underground23%15%
Miles of natural gas transmission and distribution mains3,37918,393
Underground natural gas storage fields—12
Total working capacity of underground natural gas storage fields in billion cubic feet—24
(a)ATXI owns 303 miles of transmission lines not reflected in this table.

Our other properties include office buildings, warehouses, garages, and repair shops.

With only a few exceptions, we have fee title to all principal energy centers and other units of property material to the operation of our businesses, and to the real property on which such facilities are located (subject to mortgage liens securing our outstanding first mortgage bonds and to certain permitted liens and judgment liens). The exceptions are as follows:

•A portion of Ameren Missouri’s Osage energy center reservoir, certain facilities at Ameren Missouri’s Sioux energy center, most of Ameren Missouri’s Peno Creek and Audrain CT energy centers, Ameren Missouri’s Maryland Heights energy center, certain substations, and most transmission and distribution lines and natural gas mains are situated on lands occupied under leases, easements, franchises, licenses, or permits. The United States or the state of Missouri may own or may have paramount rights with respect to certain lands lying in the bed of the Osage River or located between the inner and outer harbor lines of the Mississippi River on which certain of Ameren Missouri’s energy centers and other properties are located.
•The United States, the state of Illinois, the state of Iowa, or the city of Keokuk, Iowa, may own or may have paramount rights with respect to certain lands lying in the bed of the Mississippi River on which a portion of Ameren Missouri’s Keokuk energy center is located.

Substantially all of the properties and plant of Ameren Missouri and Ameren Illinois are subject to the liens of the indentures securing their mortgage bonds.

Ameren Missouri has conveyed most of its Peno Creek CT energy center to the city of Bowling Green, Missouri, and leased the energy center back from the city through 2022. Under the terms of this capital lease, Ameren Missouri is responsible for all operation and maintenance for the energy center. Ownership of the energy center will transfer to Ameren Missouri at the expiration of the lease, at which time the property, plant, and equipment will become subject to the lien of any Ameren Missouri first mortgage bond indenture then in effect.

Ameren Missouri operates a CT energy center located in Audrain County, Missouri. Ameren Missouri has rights and obligations as lessee of the CT energy center under a long-term lease with Audrain County. The lease will expire in December 2023. Under the terms of this capital lease, Ameren Missouri is responsible for all operation and maintenance for the energy center. Ownership of the energy center will transfer to Ameren Missouri at the expiration of the lease, at which time the property, plant, and equipment will become subject to the lien of any Ameren Missouri first mortgage bond indenture then in effect.

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