Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2021

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue [Table Text Block]

The following table presents OG&E's revenues from contracts with customers disaggregated by customer classification. OG&E's operating revenues disaggregated by customer classification can be found in "OG&E (Electric Utility) Results of Operations" within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations."

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions)	2021		2020		2021		2020
Residential	$	365.5	$	294.9	$	1,112.2	$	664.6
Commercial	203.4		156.7		619.2		361.0
Industrial	79.9		59.3		264.1		145.5
Oilfield	68.0		50.6		257.5		127.2
Public authorities and street light	75.0		57.8		235.1		133.1
System sales revenues	791.8		619.3		2,488.1		1,431.4
Provision for rate refund	—		4.8		—		3.2
Integrated market	17.2		18.0		447.6		33.7
Transmission	30.8		35.0		103.8		109.0
Other	8.4		10.7		(5.8)		22.9
Revenues from contracts with customers (A)	$	848.2	$	687.8	$	3,033.7	$	1,600.2

(A) In February 2021, Winter Storm Uri resulted in record winter peak demand for electricity and extremely high natural gas and purchased power prices in OG&E's service territory. Operating revenues for the nine months ended September 30, 2021 significantly increased due to increased fuel, purchased power and direct transmission expenses, which are generally recoverable from customers, as a result of Winter Storm Uri. For further discussion, see Note 15 and "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operation."