Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Schedule Of Estimated Purchased Commitments

The table below presents our estimated minimum fuel, purchased power, and other commitments at December 31, 2019. Ameren’s and Ameren Illinois’ purchased power commitments include the Ameren Illinois agreements entered into as part of the IPA-administered power procurement process. Included in the Other column are minimum purchase commitments under contracts for equipment, design and construction, and meter reading services, among other agreements, at December 31, 2019.

	Coal		Natural Gas(a)		Nuclear Fuel		Purchased Power(b)(c)			Methane Gas		Other		Total
Ameren:
2020	$	325	$	171	$	42	$	147	(d)	$	3	$	75	$	763
2021	197		109		60		51			3		33		453
2022	137		55		13		13			3		22		243
2023	46		35		43		3			3		22		152
2024	53		12		15		—			3		25		108
Thereafter	27		43		15		—			24		58		167
Total	$	785	$	425	$	188	$	214		$	39	$	235	$	1,886
Ameren Missouri:
2020	$	325	$	40	$	42	$	—		$	3	$	61	$	471
2021	197		26		60		—			3		26		312
2022	137		14		13		—			3		22		189
2023	46		13		43		—			3		22		127
2024	53		6		15		—			3		25		102
Thereafter	27		19		15		—			24		24		109
Total	$	785	$	118	$	188	$	—		$	39	$	180	$	1,310
Ameren Illinois:
2020	$	—	$	131	$	—	$	147	(d)	$	—	$	3	$	281
2021	—		83		—		51			—		2		136
2022	—		41		—		13			—		—		54
2023	—		22		—		3			—		—		25
2024	—		6		—		—			—		—		6
Thereafter	—		24		—		—			—		—		24
Total	$	—	$	307	$	—	$	214		$	—	$	5	$	526

(a) Includes amounts for generation and for distribution.

(b) The purchased power amounts for Ameren and Ameren Illinois exclude agreements for renewable energy credits through 2035 with various renewable energy suppliers due to the contingent nature of the payment amounts, with the exception of expected payments of $13 million through 2024.

(c) The purchased power amounts for Ameren and Ameren Missouri exclude a 102-megawatt power purchase agreement with a wind farm operator, which expires in 2024, due to the contingent nature of the payment amounts.

(d)

In January 2018, as required by the FEJA, Ameren Illinois entered into agreements to acquire zero emission credits, through 2026. Annual zero emission credit commitment amounts will be published by the IPA each May prior to the start of the subsequent planning year. The amounts above reflect Ameren Illinois’ commitment to acquire approximately $27 million of zero emission credits through May 2020.