Property, Plant and Equipment

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Text Block]

10. PROPERTY, PLANT, AND EQUIPMENT

The following table sets forth the major classifications of our property, plant, and equipment and accumulated depreciation at December 31:

In thousands	2013		2012
Utility plant in service	$	2,585,901	$	2,435,886
Utility construction work in progress	28,855		46,831
Less: Accumulated depreciation	827,380		789,201
Utility plant, net	1,787,376		1,693,516
Non-utility plant in service	297,330		296,781
Non-utility construction work in progress	6,653		6,510
Less: Accumulated depreciation	28,485		23,195
Non-utility plant, net	275,498		280,096
Total property, plant, and equipment	$	2,062,874	$	1,973,612

The weighted average depreciation rate was 2.8% for utility assets and 2.2% for non-utility assets in 2013, 2012, and 2011.

Accumulated depreciation does not include the accumulated provision for asset removal costs of $296.3 million and $281.2 million at December 31, 2013 and 2012, respectively. These accrued asset removal costs are

reflected on the balance sheets as regulatory liabilities. See Note 2.