Segment Information (Tables)

3 Months Ended

Mar. 31, 2023

Schedule Of Segment Reporting Information By Segment

The following tables present revenues, net income attributable to common shareholders, and capital expenditures by segment at Ameren and Ameren Illinois for the three months ended March 31, 2023 and 2022. Ameren, Ameren Missouri, and Ameren Illinois management review segment capital expenditure information rather than any individual or total asset amount. For additional information about our segments, see Note 16 – Segment Information under Part II, Item 8, of the Form 10-K.

Ameren


	Ameren Missouri		Ameren Illinois Electric Distribution		Ameren Illinois Natural Gas		Ameren Transmission			Other		Intersegment Eliminations		Ameren










Three Months 2023:
External revenues	$	913	$	624	$	391	$	134		$	—	$	—	$	2,062
Intersegment revenues	10		—		—		29			—		(39)		—
Net income attributable to Ameren common shareholders	28		61		87		71		(a)	17		—		264
Capital expenditures	481		170		51		213			3		13		931
Three Months 2022:
External revenues	$	808	$	464	$	481	$	126		$	—	$	—	$	1,879
Intersegment revenues	10		1		—		20			—		(31)		—
Net income attributable to Ameren common shareholders	50		49		80		58		(a)	15		—		252
Capital expenditures	414		138		49		172			2		(1)		774

(a)Ameren Transmission earnings reflect an allocation of financing costs from Ameren (parent).

Ameren Illinois


	Ameren Illinois Electric Distribution		Ameren Illinois Natural Gas		Ameren Illinois Transmission		Intersegment Eliminations		Ameren Illinois










Three Months 2023:
External revenues	$	624	$	391	$	86	$	—	$	1,101
Intersegment revenues	—		—		28		(28)		—
Net income available to common shareholder	61		87		50		—		198
Capital expenditures	170		51		186		—		407
Three Months 2022:
External revenues	$	465	$	481	$	78	$	—	$	1,024
Intersegment revenues	—		—		20		(20)		—
Net income available to common shareholder	49		80		40		—		169
Capital expenditures	138		49		155		—		342

Disaggregation of Revenue

The following tables present disaggregated revenues by segment at Ameren and Ameren Illinois for the three months ended March 31, 2023 and 2022. Economic factors affect the nature, timing, amount, and uncertainty of revenues and cash flows in a similar manner across customer classes. Revenues from alternative revenue programs have a similar distribution among customer classes as revenues from contracts with customers. Other revenues not associated with contracts with customers are presented in the Other customer classification, along with electric transmission, off-system sales, and capacity revenues.

Ameren


	Ameren Missouri		Ameren Illinois Electric Distribution		Ameren Illinois Natural Gas		Ameren Transmission		Intersegment Eliminations		Ameren
























Three Months 2023:
Residential	$	324	$	382	$	—	$	—	$	—	$	706
Commercial	247		200		—		—		—		447
Industrial	61		48		—		—		—		109
Other	209		(6)		—		163		(38)		328
Total electric revenues	$	841	$	624	$	—	$	163	$	(38)	$	1,590
Residential	$	52	$	—	$	296	$	—	$	—	$	348
Commercial	23		—		77		—		—		100
Industrial	2		—		7		—		—		9
Other	5		—		11		—		(1)		15
Total natural gas revenues	$	82	$	—	$	391	$	—	$	(1)	$	472
Total revenues(a)	$	923	$	624	$	391	$	163	$	(39)	$	2,062
Three Months 2022:
Residential	$	332	$	263	$	—	$	—	$	—	$	595
Commercial	240		158		—		—		—		398
Industrial	57		45		—		—		—		102
Other	109		(1)		—		146		(31)		223
Total electric revenues	$	738	$	465	$	—	$	146	$	(31)	$	1,318
Residential	$	51	$	—	$	369	$	—	$	—	$	420
Commercial	22		—		97		—		—		119
Industrial	2		—		17		—		—		19
Other	5		—		(2)		—		—		3
Total natural gas revenues	$	80	$	—	$	481	$	—	$	—	$	561
Total revenues(a)	$	818	$	465	$	481	$	146	$	(31)	$	1,879

(a)The following table presents increases/(decreases) in revenues from alternative revenue programs and other revenues not from contracts with customers for the three months ended March 31, 2023 and 2022:


	Ameren Missouri			Ameren Illinois Electric Distribution		Ameren Illinois Natural Gas		Ameren Transmission		Ameren






Three Months 2023:
Revenues from alternative revenue programs	$	(2)		$	64	$	28	$	8	$	98
Other revenues not from contracts with customers	(6)		(a)	2		1		—		(3)		(a)
Three Months 2022:
Revenues from alternative revenue programs	$	(6)		$	55	$	(5)	$	1	$	45
Other revenues not from contracts with customers	—		(a)	2		1		—		3		(a)

(a)Includes net realized losses on derivative power contracts.

Ameren Illinois


	Ameren Illinois Electric Distribution		Ameren Illinois Natural Gas		Ameren Illinois Transmission		Intersegment Eliminations		Ameren Illinois












Three Months 2023:
Residential	$	382	$	296	$	—	$	—	$	678
Commercial	200		77		—		—		277
Industrial	48		7		—		—		55
Other	(6)		11		114		(28)		91
Total revenues(a)	$	624	$	391	$	114	$	(28)	$	1,101
Three Months 2022:
Residential	$	263	$	369	$	—	$	—	$	632
Commercial	158		97		—		—		255
Industrial	45		17		—		—		62
Other	(1)		(2)		98		(20)		75
Total revenues(a)	$	465	$	481	$	98	$	(20)	$	1,024

(a)The following table presents increases/(decreases) in revenues from alternative revenue programs and other revenues not from contracts with customers for the Ameren Illinois segments for the three months ended March 31, 2023 and 2022:


	Ameren Illinois Electric Distribution		Ameren Illinois Natural Gas		Ameren Illinois Transmission		Ameren Illinois








Three Months 2023:
Revenues from alternative revenue programs	$	64	$	28	$	7	$	99
Other revenues not from contracts with customers	2		1		—		3

Three Months 2022:
Revenues from alternative revenue programs	$	55	$	(5)	$	1	$	51
Other revenues not from contracts with customers	2		1		—		3