Revenues

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Revenue

Revenue is classified by the type of goods/services rendered and market/customer type. SPS’ operating revenues consisted of the following:

	Three Months Ended Sept. 30
(Millions of Dollars)	2020		2019
Major revenue types
Revenue from contracts with customers:
Residential	$	120.6	$	119.3
C&I	219.5		222.4
Other	12.9		12.8
Total retail	353.0		354.5
Wholesale	109.4		106.6
Transmission	73.5		64.4
Other	1.4		0.6
Total revenue from contracts with customers	537.3		526.1
Alternative revenue and other	78.0		7.0
Total revenues	$	615.3	$	533.1
	Nine Months Ended Sept. 30
(Millions of Dollars)	2020		2019
Major revenue types
Revenue from contracts with customers:
Residential	$	278.3	$	277.8
C&I	552.3		619.6
Other	29.5		32.3
Total retail	860.1		929.7
Wholesale	264.2		263.4
Transmission	212.1		181.8
Other	2.6		2.0
Total revenue from contracts with customers	1,339.0		1,376.9
Alternative revenue and other	94.7		20.8
Total revenues	$	1,433.7	$	1,397.7