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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
OPERATING REVENUES | $ 692,714 | $ 677,728
OPERATING EXPENSES |  |
Fuel and purchased power | 197,110 | 212,395
Operations and maintenance | 265,682 | 226,071
Depreciation and amortization | 144,825 | 127,627
Taxes other than income taxes | 53,600 | 43,836
Other expenses | 163 | 388
Total | 661,380 | 610,317
OPERATING INCOME | 31,334 | 67,411
OTHER INCOME (DEDUCTIONS) |  |
Allowance for equity funds used during construction | 14,079 | 9,482
Pension and other postretirement non-service credits - net | 12,859 | 6,095
Other income (Note 9) | 3,985 | 480
Other expense (Note 9) | (3,229) | (3,680)
Total | 27,694 | 12,377
INTEREST EXPENSE |  |
Interest charges | 58,954 | 51,864
Allowance for borrowed funds used during construction | (6,755) | (4,472)
Total | 52,199 | 47,392
INCOME BEFORE INCOME TAXES | 6,829 | 32,396
INCOME TAXES | (1,265) | 4,211
NET INCOME | 8,094 | 28,185
Less: Net income attributable to noncontrolling interests (Note 6) | 4,873 | 4,873
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | $ 3,221 | $ 23,312
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING |  |
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING - BASIC (in shares) | 112,017 | 111,728
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING - DILUTED (in shares) | 112,493 | 112,195
EARNINGS PER WEIGHTED-AVERAGE COMMON SHARE OUTSTANDING |  |
Net income attributable to common shareholders - basic (in dollars per share) | $ 0.03 | $ 0.21
Net income attributable to common shareholders - diluted (in dollars per share) | $ 0.03 | $ 0.21
APS |  |
OPERATING REVENUES | $ 692,006 | $ 677,589
OPERATING EXPENSES |  |
Fuel and purchased power | 202,010 | 217,104
Operations and maintenance | 254,601 | 219,008
Depreciation and amortization | 144,112 | 127,208
Taxes other than income taxes | 53,242 | 43,564
Taxes other than income taxes | 163 | 436
Total | 654,128 | 607,320
OPERATING INCOME | 37,878 | 70,269
OTHER INCOME (DEDUCTIONS) |  |
Allowance for equity funds used during construction | 14,079 | 9,482
Pension and other postretirement non-service credits - net | 13,197 | 6,042
Other income (Note 9) | 3,772 | 342
Other expense (Note 9) | (2,945) | (3,128)
Total | 28,103 | 12,738
INTEREST EXPENSE |  |
Interest charges | 56,158 | 50,796
Allowance for borrowed funds used during construction | (6,755) | (4,472)
Total | 49,403 | 46,324
INCOME BEFORE INCOME TAXES | 16,578 | 36,683
INCOME TAXES | 2,106 | 8,648
NET INCOME | 14,472 | 28,035
Less: Net income attributable to noncontrolling interests (Note 6) | 4,873 | 4,873
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | $ 9,599 | $ 23,162

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