Property, Plant and Equipment

12 Months Ended

Dec. 31, 2014

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	2014		2013
Utility plant in service	$	2,661,097	$	2,585,901
Utility construction work in progress	24,886		28,855
Less: Accumulated depreciation	836,510		827,380
Utility plant, net	1,849,473		1,787,376
Non-utility plant in service	297,295		297,330
Non-utility construction work in progress	9,282		6,653
Less: Accumulated depreciation	34,457		28,485
Non-utility plant, net	272,120		275,498
Total property, plant, and equipment	$	2,121,593	$	2,062,874
Capital expenditures in accrued liabilities	$	8,757	$	10,691

The weighted average depreciation rate was 2.8% for utility assets and 2.2% for non-utility assets in 2014, 2013, and 2012.

Accumulated depreciation does not include the accumulated provision for asset removal costs of $311.2 million and $296.3 million at December 31, 2014 and 2013, respectively. These accrued asset removal costs are reflected on the balance sheets as regulatory liabilities. See Note 2. In addition, we acquired equipment under capital leases of $1.3 million and $0.2 million in 2014 and 2013, respectively.