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CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
OPERATING REVENUES | $ 3,691,247 | $ 3,565,296 | $ 3,498,682
OPERATING EXPENSES |  |  |
Fuel and purchased power | 1,076,116 | 981,301 | 1,075,510
Operations and maintenance | 1,036,744 | 949,107 | 931,692
Depreciation and amortization | 582,354 | 534,118 | 485,829
Taxes other than income taxes | 212,849 | 184,347 | 166,499
Other expenses | 9,497 | 6,660 | 3,541
Total | 2,917,560 | 2,655,533 | 2,663,071
OPERATING INCOME | 773,687 | 909,763 | 835,611
OTHER INCOME (DEDUCTIONS) |  |  |
Allowance for equity funds used during construction (Note 1) | 52,319 | 47,011 | 42,140
Pension and other postretirement non-service credits - net (Note 7) | 49,791 | 24,664 | 20,373
Other income (Note 17) | 24,896 | 4,006 | 901
Other expense (Note 17) | (17,966) | (21,539) | (15,337)
Total | 109,040 | 54,142 | 48,077
INTEREST EXPENSE |  |  |
Interest charges | 243,465 | 219,796 | 205,720
Allowance for borrowed funds used during construction (Note 1) | (25,180) | (22,112) | (19,970)
Total | 218,285 | 197,684 | 185,750
INCOME BEFORE INCOME TAXES | 664,442 | 766,221 | 697,938
INCOME TAXES (Note 4) | 133,902 | 258,272 | 236,411
NET INCOME | 530,540 | 507,949 | 461,527
Less: Net income attributable to noncontrolling interests (Note 18) | 19,493 | 19,493 | 19,493
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | $ 511,047 | $ 488,456 | $ 442,034
Weighted Average common shares outstanding — basic (in shares) | 112,129 | 111,839 | 111,409
Weighted Average common shares outstanding — diluted (in shares) | 112,550 | 112,367 | 112,046
EARNINGS PER WEIGHTED-AVERAGE COMMON SHARE OUTSTANDING |  |  |
Net income attributable to common shareholders - basic (in dollars per share) | $ 4.56 | $ 4.37 | $ 3.97
Net income attributable to common shareholders — diluted (in dollars per share) | $ 4.54 | $ 4.35 | $ 3.95
ARIZONA PUBLIC SERVICE COMPANY |  |  |
OPERATING REVENUES | $ 3,688,342 | $ 3,557,652 | $ 3,498,090
OPERATING EXPENSES |  |  |
Fuel and purchased power | 1,094,020 | 992,744 | 1,082,625
Operations and maintenance | 969,227 | 917,983 | 902,467
Depreciation and amortization | 580,694 | 532,423 | 484,909
Taxes other than income taxes | 212,136 | 183,254 | 166,064
Other expenses | 2,497 | 6,709 | 3,540
Total | 2,858,574 | 2,633,113 | 2,639,605
OPERATING INCOME | 829,768 | 924,539 | 858,485
OTHER INCOME (DEDUCTIONS) |  |  |
Allowance for equity funds used during construction (Note 1) | 52,319 | 47,011 | 42,140
Pension and other postretirement non-service credits - net (Note 7) | 51,242 | 24,371 | 20,224
Other income (Note 17) | 22,746 | 3,013 | 271
Other expense (Note 17) | (15,292) | (13,913) | (10,554)
Total | 111,015 | 60,482 | 52,081
INTEREST EXPENSE |  |  |
Interest charges | 231,391 | 214,163 | 202,571
Allowance for borrowed funds used during construction (Note 1) | (25,180) | (22,112) | (19,481)
Total | 206,211 | 192,051 | 183,090
INCOME BEFORE INCOME TAXES | 734,572 | 792,970 | 727,476
INCOME TAXES (Note 4) | 144,814 | 269,168 | 245,842
NET INCOME | 589,758 | 523,802 | 481,634
Less: Net income attributable to noncontrolling interests (Note 18) | 19,493 | 19,493 | 19,493
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | $ 570,265 | $ 504,309 | $ 462,141

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