Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Long-term Purchase Commitment

The table below presents our estimated minimum fuel, purchased power, and other commitments at September 30, 2020. 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 September 30, 2020.

	Coal		Natural Gas(a)		Nuclear Fuel		Purchased Power(b)(c)			Methane Gas		Other		Total
Ameren:
2020	$	94	$	52	$	3	$	57	(d)	$	—	$	39	$	245
2021	242		161		57		156		(d)	3		53		672
2022	193		108		12		63			3		23		402
2023	113		69		45		21			3		23		274
2024	94		28		20		4			3		20		169
Thereafter	55		73		21		—			21		61		231
Total	$	791	$	491	$	158	$	301		$	33	$	219	$	1,993
Ameren Missouri:
2020	$	94	$	12	$	3	$	—		$	—	$	22	$	131
2021	242		43		57		—			3		46		391
2022	193		38		12		—			3		23		269
2023	113		32		45		—			3		23		216
2024	94		13		20		—			3		20		150
Thereafter	55		22		21		—			21		24		143
Total	$	791	$	160	$	158	$	—		$	33	$	158	$	1,300
Ameren Illinois:
2020	$	—	$	40	$	—	$	57	(d)	$	—	$	14	$	111
2021	—		118		—		156		(d)	—		2		276
2022	—		70		—		63			—		—		133
2023	—		37		—		21			—		—		58
2024	—		15		—		4			—		—		19
Thereafter	—		51		—		—			—		—		51
Total	$	—	$	331	$	—	$	301		$	—	$	16	$	648

(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 $36 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, which begins each June. The amounts above reflect Ameren Illinois’ commitment to acquire $42 million of zero emission credits through May 2021.