Seattle City Light 2016 ANNUAL REPORT | Audited Financial Statements 34 THE CITY OF SEATTLE—CITY LIGHT DEPARTMENT NOTES TO FINANCIAL STATEMENTS AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2016 AND 2015 - 34 - Hydroelectric Production Transmission Distribution General Intangible Total 2015 ($ in millions) Utility Plant-in-service - At original cost: Plant-in-service, excluding Land: 1/1/2015 Balance 763.6 $ 207.8 $ 2,194.2 $ 313.9 $ 456.5 $ 3,936.0 $ Acquisitions 59.3 25.7 140.2 29.0 25.6 279.8 Dispositions (1.8) (2.6) (38.8) (4.4) - (47.6) Transfers and adjustments - - - - - - 12/31/2015 Balance 821.1 230.9 2,295.6 338.5 482.1 4,168.2 Accumulated depreciation and amortization: 1/1/2015 Balance 338.9 81.5 813.6 199.4 179.5 1,612.9 Increase in accumulated depreciation and amortization 15.2 4.8 69.0 18.5 12.7 120.2 Retirements (6.4) (3.8) (46.6) (4.7) - (61.5) PY Adjustments - - - 1.1 (0.9) 0.2 12/31/2015 Balance 347.7 82.5 836.0 214.3 191.3 1,671.8 SubTotal Plant-in-service - Net, excluding Land: 473.4 $ 148.4 $ 1,459.6 $ 124.2 $ 290.8 $ 2,496.4 $ Land and land rights: 1/1/2015 Balance 48.5 $ 3.0 $ 13.3 $ 5.7 $ - $ 70.5 $ Acquisitions 0.8 - 0.1 - - 0.9 Dispositions - - - - - - Transfers and adjustments 1.3 - - - - 1.3 12/31/2015 Balance 50.6 3.0 13.4 5.7 - 72.7 Tot Total Plant-in-service - Net, including Land: 524.0 $ 151.4 $ 1,473.0 $ 129.9 $ 290.8 $ 2,569.1 $