Revenue (Tables)

3 Months Ended

Mar. 31, 2024

Disaggregation of Revenue [Table Text Block]

The following table presents our revenue from contracts with customers and other revenue by segment for the three months ended March 31, 2024 and 2023:

$ in millions	Utility		Other		Adjustments and Eliminations		Total
	Three months ended March 31, 2024
Retail revenue
Retail revenue from contracts with customers
Residential revenue	$	124.3	$	—	$	—	$	124.3
Commercial revenue	39.2		—		—		39.2
Industrial revenue	16.7		—		—		16.7
Governmental revenue	5.8		—		—		5.8
Other (a)	3.0		—		—		3.0
Total retail revenue from contracts with customers	189.0		—		—		189.0
Wholesale revenue
Wholesale revenue from contracts with customers	5.0		—		(0.2)		4.8
RTO ancillary revenue	27.8		—		—		27.8
Capacity revenue	0.1		—		—		0.1
Miscellaneous revenue
Miscellaneous revenue from contracts with customers (b)	—		2.3		—		2.3
Other miscellaneous revenue	2.4		1.2		(1.2)		2.4
Total revenue	$	224.3	$	3.5	$	(1.4)	$	226.4
	Three months ended March 31, 2023
Retail revenue
Retail revenue from contracts with customers
Residential revenue	$	143.0	$	—	$	—	$	143.0
Commercial revenue	42.9		—		—		42.9
Industrial revenue	17.7		—		—		17.7
Governmental revenue	6.1		—		—		6.1
Other (a)	3.2		—		—		3.2
Total retail revenue from contracts with customers	212.9		—		—		212.9
Wholesale revenue
Wholesale revenue from contracts with customers	3.8		—		(0.1)		3.7
RTO ancillary revenue	19.7		—		—		19.7
Capacity revenue	0.5		—		—		0.5
Miscellaneous revenue
Miscellaneous revenue from contracts with customers (b)	—		2.4		—		2.4
Other miscellaneous revenue	0.9		0.9		(0.9)		0.9
Total revenue	$	237.8	$	3.3	$	(1.0)	$	240.1

(a)    "Other" primarily includes operation and maintenance service revenue, billing service fees from CRES providers and other miscellaneous retail revenue from contracts with customers.

(b    Miscellaneous revenue from contracts with customers primarily includes revenue for various services provided by Miami Valley Lighting.

Subsidiaries [Member]

Disaggregation of Revenue [Table Text Block]

The following table presents our revenue from contracts with customers and other revenue for the three months ended March 31, 2024 and 2023:

	Three months ended
	March 31,
$ in millions	2024		2023
Retail revenue
Retail revenue from contracts with customers
Residential revenue	$	124.3	$	143.0
Commercial revenue	39.2		42.9
Industrial revenue	16.7		17.7
Governmental revenue	5.8		6.1
Other (a)	3.0		3.2
Total retail revenue from contracts with customers	189.0		212.9
Wholesale revenue
Wholesale revenue from contracts with customers	5.0		3.8
RTO ancillary revenue	27.8		19.7
Capacity revenue	0.1		0.5
Miscellaneous revenue	2.4		0.9
Total revenue	$	224.3	$	237.8

(a)    "Other" primarily includes operation and maintenance service revenue, billing service fees from CRES providers and other miscellaneous retail revenue from contracts with customers.