Commitments and Contingencies (Tables)

6 Months Ended

Jun. 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 June 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 June 30, 2020.

	Coal		Natural Gas(a)		Nuclear Fuel		Purchased Power(b)(c)			Methane Gas		Other		Total
Ameren:
2020	$	172	$	102	$	7	$	115	(d)	$	1	$	59	$	456
2021	235		148		57		113		(d)	3		57		613
2022	193		89		11		37			3		26		359
2023	113		52		45		12			3		24		249
2024	94		21		15		2			3		23		158
Thereafter	55		72		16		—			21		63		227
Total	$	862	$	484	$	151	$	279		$	34	$	252	$	2,062
Ameren Missouri:
2020	$	172	$	22	$	7	$	—		$	1	$	44	$	246
2021	235		33		57		—			3		40		368
2022	193		20		11		—			3		26		253
2023	113		16		45		—			3		24		201
2024	94		6		15		—			3		23		141
Thereafter	55		21		16		—			21		26		139
Total	$	862	$	118	$	151	$	—		$	34	$	183	$	1,348
Ameren Illinois:
2020	$	—	$	80	$	—	$	115	(d)	$	—	$	10	$	205
2021	—		115		—		113		(d)	—		12		240
2022	—		69		—		37			—		—		106
2023	—		36		—		12			—		—		48
2024	—		15		—		2			—		—		17
Thereafter	—		51		—		—			—		—		51
Total	$	—	$	366	$	—	$	279		$	—	$	22	$	667

(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 $33 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 $58 million of zero emission credits through May 2021.