OPERATING REVENUES (Tables) - Utility segment

3 Months Ended

Mar. 31, 2023

Disaggregation of Operating Revenues

Operating revenues disaggregated by revenue source

The following tables present our operating revenues disaggregated by revenue source for our utility segment. We do not have any revenues associated with our other segment. We disaggregate revenues into categories that depict how the nature, amount, timing, and uncertainty of revenues and cash flows are affected by economic factors. Revenues are further disaggregated by electric and natural gas operations and then by customer class. Each customer class within our electric and natural gas operations has different expectations of service, energy and demand requirements, and can be impacted differently by regulatory activities within their jurisdictions.

	Three Months Ended March 31
(in millions)	2023		2022
Wisconsin Public Service Corporation
Electric utility	$	320.0	$	310.7
Natural gas utility	169.9		166.9
Total revenues from contracts with customers	489.9		477.6
Other operating revenues	1.6		1.3
Total operating revenues	$	491.5	$	478.9

Revenues from contracts with customers | Electric

Disaggregation of Operating Revenues

Operating revenues disaggregated by revenue source

The following table disaggregates electric utility operating revenues by customer class:

	Three Months Ended March 31
(in millions)	2023		2022
Residential	$	120.8	$	117.1
Small commercial and industrial	104.6		97.3
Large commercial and industrial	64.9		63.3
Other	2.2		2.2
Total retail revenues	292.5		279.9
Wholesale	22.5		21.8
Resale	6.0		5.2
Other utility revenues	(1.0)		3.8
Total electric utility operating revenues	$	320.0	$	310.7

Revenues from contracts with customers | Natural gas

Disaggregation of Operating Revenues

Operating revenues disaggregated by revenue source

The following table disaggregates natural gas utility operating revenues by customer class:

	Three Months Ended March 31
(in millions)	2023		2022
Residential	$	117.0	$	102.1
Commercial and industrial	70.8		62.8
Total retail revenues	187.8		164.9
Transportation	6.9		6.2
Other utility revenues (1)	(24.8)		(4.2)
Total natural gas utility operating revenues	$	169.9	$	166.9

(1)Includes the revenues subject to our purchased gas recovery mechanism. During both quarters, we over-collected natural gas costs due to these costs being lower than what was anticipated in rates.

Other operating revenues

Disaggregation of Operating Revenues

Operating revenues disaggregated by revenue source

Other operating revenues consist primarily of the following:

	Three Months Ended March 31
(in millions)	2023		2022
Late payment charges	$	1.2	$	1.1
Alternative revenues (1)	0.3		0.2
Other	0.1		—
Total other operating revenues	$	1.6	$	1.3

(1)See Note 1(d), Operating Revenues, in our 2022 Annual Report on Form 10-K for more information on alternative revenues.