Revenues (Tables)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

SPS’ operating revenues consists of the following:

	Three Months Ended
(Millions of Dollars)	June 30, 2020		June 30, 2019
Major revenue types
Revenue from contracts with customers:
Residential	$	84.8	$	70.4
C&I	163.7		191.4
Other	8.7		9.9
Total retail	257.2		271.7
Wholesale	81.6		72.0
Transmission	76.0		60.0
Other	0.6		0.4
Total revenue from contracts with customers	415.4		404.1
Alternative revenue and other	8.0		6.4
Total revenues	$	423.4	$	410.5
	Six Months Ended
(Millions of Dollars)	June 30, 2020		June 30, 2019
Major revenue types
Revenue from contracts with customers:
Residential	$	157.7	$	158.5
C&I	332.8		397.2
Other	16.6		19.5
Total retail	507.1		575.2
Wholesale	154.8		156.8
Transmission	138.6		117.4
Other	1.2		1.4
Total revenue from contracts with customers	801.7		850.8
Alternative revenue and other	16.7		13.8
Total revenues	$	818.4	$	864.6