Property, Plant and Equipment
The Partnership’s property, plant and equipment on the Consolidated and Combined Balance Sheets are classified as follows: | | | | | | | | | At December 31, (in millions) | 2015 | | 2014 | | | | Predecessor | Property, plant and equipment | | | | Pipeline and other transmission assets | $ | 6,120.0 |
| | $ | 5,328.2 |
| Storage facilities | 1,370.1 |
| | 1,326.5 |
| Gas stored base gas | 299.5 |
| | 299.5 |
| Gathering and processing facilities | 370.2 |
| | 263.3 |
| Construction work in process | 463.5 |
| | 454.2 |
| General plant, software, and other assets | 307.6 |
| | 259.9 |
| Property, plant and equipment | 8,930.9 |
| | 7,931.6 |
| Accumulated Depreciation and Amortization | (2,960.1 | ) | | (2,971.4 | ) | Net Property, plant and equipment | $ | 5,970.8 |
| | $ | 4,960.2 |
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The table below lists the Partnership's applicable annual depreciation rates: | | | | | | | | Year Ended December 31, | | 2015 | | 2014 | | 2013 | | | | Predecessor | | Predecessor | Depreciation rates | | | | | | Pipeline and other transmission assets | 1.00% - 1.73% | | 1.00% - 2.55% | | 1.50 % - 2.55% | Storage facilities | 2.19% - 3.00% | | 2.19% - 3.30% | | 2.19% - 3.50% | Gathering and processing facilities | 1.67% - 2.50% | | 1.67% - 2.50% | | 1.67 % - 2.50% | General plant, software, and other assets | 1.00% - 10.00% | | 1.00% - 10.00% | | 1.00% - 10.00% |
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