Property, plant, and equipment consisted of the following utility, nonutility, and nonregulated assets at December 31:



(Millions)	2013		2012
Electric utility	$	3,558.9	$	3,095.8
Natural gas utility	5,428.5		5,050.8
Total utility plant	8,987.4		8,146.6
Less: Accumulated depreciation	3,160.9		3,006.1
Net	5,826.5		5,140.5
Construction work in progress	353.3		203.1
Plant to be retired, net *	14.4		—
Net utility plant	6,194.2		5,343.6

Nonutility plant	142.3		120.2
Less: Accumulated depreciation	81.6		72.3
Net	60.7		47.9
Construction work in progress	38.0		19.6
Net nonutility plant	98.7		67.5

Integrys Energy Services energy assets	109.8		92.0
Integrys Energy Services other	19.7		17.9
Other nonregulated	26.2		14.0
Total nonregulated property, plant, and equipment	155.7		123.9
Less: Accumulated depreciation	46.4		36.3
Net	109.3		87.6
Construction work in progress	8.3		3.2
Net nonregulated property, plant, and equipment	117.6		90.8

Total property, plant, and equipment	$	6,410.5	$	5,501.9

In connection with the WPS Consent Decree with the EPA, early retirement of the Weston 1, Pulliam 5, and Pulliam 6 generating units was probable at December 31, 2013. These units are currently included in rate base, and WPS continues to depreciate them on a straight-line basis using the composite depreciation rates approved by the PSCW. The amount presented above is net of accumulated depreciation. See Note 15, Commitments and Contingencies, for more information regarding the Consent Decree.