7Baggers
Quarterly
Annual
    Unit: USD2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 
      
    		                                                                            
      assets
    		                                                                            
      property, plant and equipment
    		15,044,963,000 14,834,817,000 14,675,281,000 14,524,798,000 14,245,690,000 14,056,169,000 13,857,060,000 13,635,303,000 13,326,563,000 12,978,137,000 12,773,470,000 12,551,909,000 12,299,545,000 13,457,342,000 13,293,191,000 13,103,639,000 12,834,695,000 12,648,604,000 12,495,227,000 12,351,852,000 11,710,155,000 11,559,528,000 11,402,308,000 11,204,838,000 10,988,435,000 10,788,894,000 10,604,089,000 10,439,839,000 10,254,976,000 10,126,931,000 10,023,252,000 9,945,560,000 9,816,295,000 9,704,134,000 9,620,006,000 9,539,581,000 9,460,444,000 9,451,538,000 9,311,376,000 9,261,323,000 8,937,174,000 8,691,487,000 8,452,022,000 8,245,791,000 7,951,544,000 7,689,518,000 7,468,200,000 7,313,203,000 7,102,369,000 6,954,180,000 6,791,637,000 6,615,813,000 6,438,525,000 6,180,827,000 5,922,308,000 5,646,918,000 5,392,065,000 6,019,453,000 5,837,365,000 5,637,498,000 5,518,060,000 5,413,119,000 5,245,050,000 5,183,527,000 5,078,088,000 5,032,215,000 4,982,596,000 4,873,969,000 4,730,708,000 4,593,980,000 4,525,608,000 4,461,586,000 4,928,627,000 4,820,700,000 4,742,029,000 4,703,040,000 
      less - accumulated depreciation, depletion and amortization
    		7,588,956,000 7,487,618,000 7,393,477,000  6,834,824,000 6,548,662,000 6,435,129,000  6,245,650,000 6,162,406,000 6,074,626,000  5,914,097,000 6,882,961,000 6,802,436,000  6,649,038,000 6,572,534,000 6,503,561,000  6,088,803,000 6,003,658,000 5,756,084,000  5,636,065,000 5,573,020,000 5,520,472,000  5,411,746,000 5,344,134,000 5,294,211,000  5,232,771,000 5,185,077,000 5,133,877,000  5,012,690,000 4,879,363,000 4,428,593,000  3,455,446,000 2,794,981,000 2,598,291,000  2,413,958,000 2,325,636,000        1,750,636,000            1,973,743,000           
      current assets
    		                                                                            
      cash and temporary cash investments
    		39,317,000 39,954,000 48,694,000 38,222,000 81,414,000 50,769,000 41,685,000 55,447,000 53,415,000 71,533,000 244,475,000 46,048,000 432,576,000 52,569,000 79,065,000 31,528,000 118,012,000 80,467,000 109,413,000 20,541,000 556,264,000 111,655,000 34,966,000 20,428,000 87,515,000 100,643,000 109,754,000 229,606,000 313,307,000 227,994,000 166,289,000 555,530,000 285,325,000 231,173,000 136,493,000 129,972,000 105,567,000 93,700,000 36,329,000 113,596,000 310,031,000 69,441,000 43,924,000 36,886,000 102,653,000 150,864,000 23,880,000 64,858,000 134,582,000 112,413,000 61,017,000 74,494,000 140,815,000 192,243,000 224,262,000 80,428,000 184,710,000 144,767,000 79,622,000 395,171,000 458,847,000 426,804,000 404,401,000 408,053,000 433,230,000 86,048,000 136,685,000 68,239,000 259,198,000 216,412,000 189,767,000 124,806,000 62,530,000 121,809,000 47,598,000 69,611,000 
      receivables – net of allowance for uncollectible accounts of 23,732 and 26,194, respectively
    		222,515,000                                                                            
      unbilled revenue
    		15,347,000 49,077,000 57,117,000 15,521,000 15,032,000 46,571,000 48,265,000 16,622,000 13,476,000 60,018,000 87,110,000 30,075,000 18,525,000 49,551,000 56,836,000 17,000,000 12,812,000 32,685,000 45,829,000 17,302,000 17,903,000 44,715,000 58,306,000 18,758,000 18,047,000 60,196,000 74,497,000 24,182,000 18,930,000 60,059,000 74,790,000 22,883,000 19,729,000 52,852,000 59,121,000 18,382,000 14,604,000 35,140,000 40,178,000 20,746,000 18,234,000 56,148,000 69,429,000 25,663,000 22,225,000 83,378,000 80,828,000                              
      gas stored underground
    		12,810,000 6,413,000 24,725,000 35,055,000 14,186,000 8,565,000 26,891,000 32,509,000 13,047,000 6,554,000 23,780,000 32,364,000 12,336,000 6,302,000 22,767,000 33,669,000 12,451,000 5,745,000 19,648,000 33,338,000 14,356,000 8,860,000 29,991,000 36,632,000 17,075,000 6,848,000 30,336,000 37,813,000 16,090,000 6,842,000 24,139,000 35,689,000 17,793,000 9,027,000 23,431,000 34,332,000 15,944,000 8,599,000 28,811,000 34,252,000 16,506,000 7,361,000 25,555,000 39,422,000 20,183,000 3,176,000 36,047,000 51,484,000 22,180,000 14,443,000 44,485,000 49,795,000 24,787,000 16,195,000 50,808,000 54,325,000 22,525,000 11,927,000 47,839,000 48,584,000 27,245,000 14,696,000 49,042,000 55,862,000 27,721,000 15,950,000 64,279,000 87,294,000 53,735,000 19,512,000 60,481,000 66,195,000 30,829,000 17,021,000 57,865,000 59,461,000 
      materials and supplies - at average cost
    		51,022,000 48,451,000 47,820,000 47,670,000 48,331,000 47,258,000 47,692,000 48,989,000 48,288,000 45,204,000 43,599,000          51,396,000 48,113,000 40,373,000  39,010,000 37,695,000 34,947,000  34,693,000 34,769,000 35,139,000  34,706,000 34,695,000 34,170,000  33,039,000 33,430,000 32,389,000  31,339,000 31,658,000 28,425,000  25,620,000 25,551,000 27,364,000  31,641,000 31,538,000 29,946,000   28,395,000                       
      unrecovered purchased gas costs
    		2,903,000 3,562,000       24,098,000 26,851,000 78,739,000 99,342,000 32,412,000 3,751,000 32,602,000 33,128,000  479,000 367,000    1,619,000 2,246,000  5,760,000 8,700,000 4,204,000  426,000 7,787,000 4,623,000 3,757,000 4,681,000 3,697,000 2,440,000 933,000 1,245,000        1,825,000 9,001,000 12,408,000     2,100,000  3,002,000          1,900,000 2,926,000 26,716,000 37,708,000 5,680,000 1,421,000 12,186,000 14,769,000  13,962,000 23,991,000 12,970,000 
      other current assets
    		64,241,000 78,532,000 83,435,000 92,229,000 82,923,000 85,123,000 99,400,000 100,260,000 71,586,000 75,233,000 61,117,000 59,369,000 61,359,000 68,265,000 64,314,000 59,660,000 51,969,000 56,117,000 47,904,000 47,557,000 47,652,000 100,188,000 96,831,000 97,054,000 56,052,000 57,586,000 69,219,000 68,024,000 52,690,000 60,324,000 47,914,000 51,505,000 50,852,000 51,585,000 49,778,000 59,354,000 47,118,000 56,714,000 66,145,000 60,665,000 49,449,000 59,592,000 68,053,000 54,752,000 49,412,000 54,903,000 45,197,000 56,905,000 46,205,000 51,731,000 49,108,000 56,121,000 48,246,000 40,354,000 43,516,000 38,334,000 44,786,000 58,522,000 107,201,000 115,969,000 42,639,000 50,593,000 64,052,000 68,474,000 32,477,000 53,718,000 56,385,000 65,158,000 31,767,000 30,854,000 32,453,000 45,057,000 26,324,000 30,700,000 60,205,000 63,723,000 
      other assets
    		                                                                            
      recoverable future taxes
    		90,493,000 88,623,000 83,740,000 80,084,000 80,820,000 77,416,000 73,283,000 69,045,000 104,794,000 104,426,000 107,467,000 106,247,000 125,576,000 123,709,000 124,439,000 121,992,000 118,883,000 117,300,000 117,431,000 118,310,000 116,758,000 115,934,000 116,188,000 115,197,000 113,619,000 113,441,000 114,219,000 115,460,000 115,688,000 115,514,000 116,792,000 181,363,000 182,469,000 179,928,000 179,941,000 177,261,000 172,456,000 172,417,000 172,205,000 168,214,000 168,436,000 163,976,000 164,390,000 163,485,000 162,138,000 161,258,000 162,296,000 163,355,000 152,122,000 150,721,000 152,202,000 150,941,000 147,652,000 146,561,000 145,469,000 144,377,000 151,142,000 152,017,000 150,865,000 149,712,000 138,435,000 138,435,000 138,435,000 138,435,000 83,543,000 83,541,000 83,541,000 82,506,000 83,453,000 83,620,000 83,787,000 83,954,000 79,010,000 79,177,000 79,344,000 79,511,000 
      unamortized debt expense
    		6,701,000 7,166,000 5,206,000 5,604,000 6,007,000 6,418,000 6,829,000 7,240,000 7,651,000 8,062,000 8,473,000 8,884,000 9,308,000 9,735,000 10,162,000 10,589,000 11,016,000 11,443,000 11,870,000 12,297,000 12,724,000 13,151,000 13,578,000 14,005,000 14,432,000 14,922,000 15,412,000 15,975,000 7,587,000 7,861,000 8,148,000 1,159,000 1,292,000 1,424,000 1,556,000 1,688,000 1,821,000 1,953,000 2,085,000 2,218,000 17,000,000 13,129,000 13,716,000 14,304,000 14,891,000 15,478,000 16,065,000 16,645,000 17,227,000 17,698,000 12,860,000 13,409,000 13,991,000 14,552,000 14,579,000 10,571,000 11,058,000 11,547,000 12,036,000 12,550,000 13,116,000 13,683,000 14,249,000 14,815,000 15,345,000 13,029,000 13,531,000 13,978,000 14,501,000 11,101,000 11,586,000 12,070,000 12,555,000 14,482,000 14,985,000 15,492,000 
      other regulatory assets
    		124,300,000 118,800,000 106,386,000 108,022,000 73,934,000 69,609,000 72,088,000 72,138,000 63,398,000 61,497,000 73,321,000 67,101,000 58,075,000 57,693,000 57,178,000 60,145,000 145,632,000 147,099,000 153,172,000 156,106,000 160,294,000 161,800,000 165,409,000 167,320,000 107,206,000 108,193,000 111,611,000 112,918,000 171,792,000 171,902,000 174,577,000 174,433,000 315,126,000 314,903,000 323,448,000 320,750,000 269,343,000 270,941,000 275,721,000 278,227,000 215,630,000 217,369,000 222,609,000 224,436,000 241,640,000 244,486,000 257,697,000 252,568,000 556,449,000 556,310,000 551,707,000 546,851,000 481,900,000 504,399,000 570,927,000 574,644,000 524,355,000 529,420,000 534,146,000 542,801,000 518,225,000 521,917,000 522,669,000 530,913,000 196,278,000 189,394,000 190,890,000 189,587,000 129,640,000 133,881,000 131,154,000 137,577,000 84,325,000 85,427,000 76,890,000 76,917,000 
      deferred charges
    		71,426,000 69,572,000 68,952,000 69,662,000 89,740,000 89,004,000 80,347,000 82,416,000 77,886,000 85,053,000 75,253,000 77,472,000 77,542,000 81,646,000 69,981,000 59,939,000 58,807,000 60,454,000 61,986,000 67,131,000 87,956,000 56,855,000 56,936,000 33,843,000 33,627,000 39,634,000 42,994,000 40,025,000 37,349,000 36,835,000 34,063,000 30,047,000 28,821,000 26,128,000 22,215,000 20,978,000 17,968,000 17,063,000 16,410,000 15,129,000 12,347,000 10,923,000 12,524,000 14,212,000 10,245,000 9,050,000 9,818,000 9,382,000 8,051,000 7,829,000 6,781,000 7,591,000 5,781,000 7,993,000 4,429,000 5,552,000 4,989,000 5,960,000 10,219,000 9,646,000 6,447,000 4,876,000 3,507,000 2,737,000 1,790,000 2,196,000 4,233,000 4,417,000 5,235,000 5,314,000 5,582,000 5,545,000 5,861,000 5,234,000 2,068,000 3,558,000 
      other investments
    		73,764,000 71,958,000 71,493,000 81,705,000 79,547,000 78,744,000 76,633,000 73,976,000 74,777,000 74,618,000 72,870,000 95,025,000 96,566,000 103,164,000 106,483,000 149,632,000 149,250,000 147,421,000 145,921,000 154,502,000 144,584,000 137,044,000 141,229,000 144,917,000 137,847,000 135,022,000 129,715,000 132,545,000 130,744,000 123,039,000 123,368,000 125,265,000 126,485,000 117,284,000 114,721,000 110,664,000 111,385,000 104,273,000 108,209,000 92,990,000 89,027,000 88,246,000 87,468,000 86,788,000 87,855,000 85,825,000 99,433,000 96,308,000 93,749,000 92,746,000 90,513,000 86,774,000 84,495,000 85,555,000 81,055,000 79,365,000 84,118,000 83,744,000 80,701,000 77,839,000 76,354,000 79,219,000 77,692,000 78,503,000 73,174,000 67,335,000 69,801,000 80,640,000 82,474,000 83,754,000 85,325,000 85,902,000 83,444,000 80,866,000 90,282,000 88,414,000 
      goodwill
    		5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 5,476,000 
      prepaid pension and post-retirement benefit costs
    		199,286,000 194,325,000 185,224,000 180,230,000 230,591,000 222,834,000 208,015,000 200,301,000 234,425,000 224,701,000 206,629,000 196,597,000 187,692,000 178,102,000 158,009,000                                                      56,926,000 59,331,000 63,188,000 61,006,000 70,858,000 68,483,000 60,954,000 64,125,000 
      fair value of derivative financial instruments
    		2,394,000 45,000 20,695,000 87,905,000 100,317,000 196,291,000 184,739,000 50,487,000 46,280,000 42,424,000 12,170,000 9,175,000 12,571,000 1,000 290,690,000  770,000 4,104,000 18,094,000 9,308,000 62,817,000 94,797,000 40,569,000 48,669,000 36,803,000 11,130,000 34,244,000 9,518,000 11,760,000 18,144,000 21,107,000 36,111,000 63,036,000 64,729,000 42,065,000 113,804,000 126,596,000 253,716,000 277,409,000 270,363,000 242,320,000 301,884,000 293,314,000 72,606,000 28,779,000 25,777,000 53,678,000 48,989,000 65,170,000 6,471,000 37,135,000 27,616,000 85,905,000 121,760,000 106,115,000 76,085,000 43,347,000 37,708,000 46,152,000 65,184,000 41,897,000 48,850,000 19,791,000 44,817,000 66,193,000 112,723,000 111,303,000 28,786,000   6,026,000 9,188,000 6,170,000 1,866,000 10,295,000 11,305,000 
      other
    		8,158,000 8,326,000 7,860,000 5,958,000 5,007,000 4,723,000 4,549,000 4,891,000 3,745,000 1,896,000 1,581,000 2,677,000 3,487,000   1,169,000   81,000 81,000 81,000 81,000 21,354,000 80,000 42,632,000 42,184,000 42,190,000 102,000 108,000 426,000 754,000 742,000 479,000 485,000 491,000 604,000 116,000 157,000 162,000 167,000 172,000 178,000 184,000 1,355,000 633,000 738,000 459,000 2,447,000 2,524,000 843,000 965,000 1,105,000 2,418,000 2,594,000 2,650,000 1,530,000 1,648,000 1,747,000 1,836,000 306,000 269,000 3,153,000 4,719,000 6,625,000 7,914,000 12,273,000 13,353,000 7,732,000 7,442,000 4,843,000 7,344,000 8,059,000 7,716,000 6,010,000 3,368,000 4,388,000 
      total assets
    		8,446,160,000 8,479,963,000 8,301,448,000 8,319,770,000 8,481,037,000 8,677,025,000 8,587,492,000 8,280,260,000 8,106,632,000 7,967,242,000 8,134,914,000 7,896,262,000 8,112,086,000 7,805,023,000 7,589,673,000 7,464,825,000 7,208,675,000 7,115,652,000 7,039,168,000 6,964,935,000 7,118,985,000 6,708,659,000 6,702,658,000 6,462,157,000 6,336,247,000 6,278,975,000 6,186,928,000 6,036,486,000 5,974,103,000 5,914,573,000 5,791,932,000 6,103,320,000 5,867,507,000 5,804,675,000 5,661,717,000 5,636,387,000 5,541,197,000 5,801,024,000 6,190,332,000 6,702,139,000 6,889,668,000 7,227,946,000 7,145,094,000 6,739,597,000 6,588,458,000 6,567,195,000 6,264,984,000 6,218,347,000 6,343,940,000 6,274,689,000 6,108,197,000 5,935,142,000 5,836,853,000 5,835,496,000 5,747,755,000 5,284,742,000 5,133,265,000 5,183,317,000 4,981,981,000 5,105,625,000 4,949,361,000 4,985,788,000 4,817,701,000 4,769,129,000 4,355,302,000 4,195,537,000 4,224,187,000 4,130,187,000 4,293,861,000 4,163,075,000 4,031,423,000 3,888,412,000 3,793,125,000 3,961,018,000 3,799,353,000 3,734,331,000 
      capitalization and liabilities
    		                                                                            
      capitalization:
    		                                                                            
      comprehensive shareholders’ equity
    		                                                                            
      common stock
    		   91,006,000    91,819,000    91,478,000    91,182,000    90,955,000    86,315,000    85,957,000    85,543,000    85,119,000    84,594,000    84,157,000         83,270,000    82,700,000    81,965,000 81,258,000 80,982,000  79,881,000 79,515,000 79,513,000  81,474,000 81,636,000   83,537,000 83,132,000   
      authorized - 200,000,000 shares; issued and outstanding – 90,355,956 shares and 91,005,993 shares, respectively
    		90,356,000                                                                            
      paid in capital
    		1,047,406,000 1,042,822,000 1,039,705,000 1,045,487,000 1,046,479,000 1,045,929,000 1,041,226,000 1,040,761,000 1,035,852,000 1,031,341,000 1,025,639,000 1,027,066,000 1,022,954,000 1,018,784,000 1,013,821,000 1,017,446,000 1,012,703,000 1,009,075,000 1,004,369,000 1,004,158,000 999,057,000 835,444,000 831,146,000 832,264,000 827,243,000 821,837,000 817,076,000 820,223,000 816,395,000 810,126,000 800,348,000 796,646,000 790,291,000 782,688,000 775,868,000 771,164,000 761,673,000 756,001,000 748,867,000 744,274,000 746,263,000 737,335,000 729,733,000 716,144,000 710,924,000 703,422,000 695,571,000 687,684,000 686,038,000 676,615,000 673,607,000 669,501,000 666,012,000 660,495,000 654,000,000 650,749,000 644,945,000  643,856,000 645,619,000 644,751,000 627,871,000 620,601,000 602,839,000 589,295,000 581,189,000 580,377,000 567,716,000 583,693,000 580,811,000 595,375,000 569,085,000 568,537,000 565,809,000 557,504,000 543,730,000 
      earnings reinvested in the business
    		1,953,533,000 1,855,366,000 1,698,648,000 1,727,326,000 1,970,384,000 2,090,172,000 1,973,279,000 1,885,856,000 1,857,630,000 1,810,454,000 1,713,176,000 1,587,085,000 1,472,395,000 1,407,683,000 1,281,963,000 1,191,175,000 1,145,700,000 1,100,718,000 1,028,844,000 991,630,000 1,177,650,000 1,176,870,000 1,320,592,000 1,272,601,000 1,262,867,000 1,236,657,000 1,172,334,000 1,098,900,000 1,097,438,000 1,070,939,000 1,014,733,000 851,669,000 841,593,000 817,348,000 762,641,000 676,361,000 673,281,000 699,399,000 880,619,000 1,103,200,000 1,324,318,000 1,650,840,000 1,666,659,000 1,614,361,000 1,589,331,000 1,557,184,000 1,493,466,000 1,442,617,000 1,426,148,000 1,398,999,000 1,343,765,000 1,306,284,000 1,287,898,000 1,275,107,000 1,237,242,000 1,206,022,000 1,198,064,000  1,093,398,000 1,063,262,000 1,053,176,000 1,038,869,000 985,663,000 948,293,000 948,262,000 932,119,000 884,476,000 953,799,000 1,024,377,000 1,008,084,000 1,027,951,000 983,776,000 855,803,000 834,902,000 781,728,000 786,013,000 
      accumulated other comprehensive loss
    		-115,807,000 -222,975,000 -76,153,000 -15,476,000    -55,060,000 -49,384,000 -54,864,000 -293,746,000 -625,733,000 -582,868,000 -654,254,000 -277,026,000 -513,597,000 -238,462,000 -101,988,000 -79,741,000 -114,757,000 -41,794,000 -18,917,000 -56,150,000 -52,155,000 -32,666,000 -54,286,000 -28,690,000 -67,750,000 -72,396,000 -47,760,000 -40,919,000 -30,123,000 -33,304,000 -34,091,000 -54,859,000         -3,979,000 -43,638,000 -45,055,000 -22,038,000 -19,234,000 -58,609,000 -117,023,000 -84,644,000 -99,020,000 -47,940,000 -51,889,000 -53,132,000 -47,699,000 -75,098,000  -64,650,000 -44,985,000 -38,153,000 -38,902,000 -52,702,000      -105,872,000 -41,867,000 -16,286,000      
      total comprehensive shareholders’ equity
    		2,975,488,000 2,765,611,000 2,752,813,000 2,848,343,000 3,113,525,000 3,303,473,000 3,174,002,000 2,963,376,000 2,935,902,000 2,878,726,000 2,536,856,000 2,079,896,000 2,003,947,000 1,863,662,000 2,110,195,000 1,786,206,000 2,011,114,000 2,098,969,000 2,044,625,000 1,971,986,000 2,225,857,000 2,079,959,000 2,182,140,000 2,139,025,000 2,143,751,000 2,090,509,000 2,046,991,000 1,937,330,000 1,927,381,000 1,919,187,000 1,859,923,000 1,703,735,000 1,684,048,000 1,651,320,000 1,568,943,000 1,527,004,000 1,527,642,000 1,622,479,000 1,812,681,000 2,025,440,000 2,247,358,000 2,599,249,000 2,603,129,000 2,410,683,000 2,340,703,000 2,299,532,000 2,250,740,000 2,194,729,000 2,137,165,000 2,042,113,000 2,016,210,000 1,960,095,000 1,989,240,000 1,966,887,000 1,921,148,000 1,891,885,000 1,850,611,000  1,754,942,000 1,745,971,000 1,741,739,000 1,709,096,000 1,634,544,000 1,589,236,000 1,634,672,000 1,636,994,000 1,594,467,000 1,603,599,000 1,583,672,000 1,628,664,000 1,690,987,000 1,630,119,000 1,551,861,000 1,505,576,000 1,454,848,000 1,443,562,000 
      long-term debt, net of current portion and unamortized discount and debt issuance costs
    		2,381,852,000 2,381,126,000 2,189,421,000 2,188,243,000 2,637,115,000 2,386,574,000 2,385,523,000 2,384,485,000 2,383,685,000 2,085,235,000 2,084,363,000 2,083,409,000 2,082,463,000 2,081,529,000 2,629,602,000 2,628,687,000 2,627,860,000 2,627,033,000 2,130,473,000 2,629,576,000 2,628,782,000 2,134,964,000 2,134,339,000 2,133,718,000 2,133,101,000 2,132,488,000 2,131,880,000 2,131,365,000 1,835,582,000 2,085,012,000 2,084,465,000 2,083,681,000                                             
      total capitalization
    		5,357,340,000 5,146,737,000 4,942,234,000 5,036,586,000 5,750,640,000 5,690,047,000 5,559,525,000 5,347,861,000 5,319,587,000 4,963,961,000 4,621,219,000 4,163,305,000 4,086,410,000 3,945,191,000 4,739,797,000 4,414,893,000 4,638,974,000 4,726,002,000 4,175,098,000 4,601,562,000 4,854,639,000 4,214,923,000 4,316,479,000 4,272,743,000 4,276,852,000 4,222,997,000 4,178,871,000 4,068,695,000 3,762,963,000 4,004,199,000 3,944,388,000 3,787,416,000 3,472,002,000 3,738,705,000 3,655,760,000 3,613,256,000 3,613,328,000 3,707,602,000 3,897,243,000 4,109,449,000 4,346,358,000 4,248,249,000 4,252,129,000 4,059,683,000 3,989,703,000 3,948,532,000 3,899,740,000 3,843,729,000 3,786,165,000 3,691,113,000 3,165,210,000 3,109,095,000 3,138,240,000 3,115,887,000 3,320,148,000 2,790,885,000 2,749,611,000  2,653,942,000 2,794,971,000 2,790,739,000 2,758,096,000 2,683,544,000 2,838,236,000 2,883,672,000 2,635,994,000 2,593,467,000 2,602,599,000 2,582,672,000 2,527,664,000 2,489,987,000 2,429,119,000 2,350,861,000 2,504,576,000 2,550,314,000 2,539,237,000 
      current and accrued liabilities
    		                                                                            
      notes payable to banks and commercial paper
    		61,500,000 208,400,000 200,000,000 90,700,000  278,900,000 300,000,000 287,500,000 138,500,000 410,000,000 250,000,000 60,000,000 400,000,000 218,000,000 166,000,000 158,500,000   25,000,000 30,000,000  230,000,000 139,800,000 55,200,000               31,400,000   157,500,000 172,900,000 85,600,000       238,000,000 171,000,000 70,200,000 20,000,000 20,000,000 40,000,000   20,500,000        66,000,000        71,600,000  
      current portion of long-term debt
    		300,000,000 350,000,000 500,000,000 500,000,000 50,000,000      399,000,000 549,000,000 549,000,000 549,000,000     500,000,000          250,000,000   300,000,000 300,000,000                  250,000,000 250,000,000 250,000,000 250,000,000  150,000,000 150,000,000  150,000,000 200,000,000 200,000,000 200,000,000 200,000,000    100,000,000 100,000,000 100,000,000 100,000,000 200,000,000 200,024,000 200,050,000 96,393,000 129,000 22,925,000 
      accounts payable
    		123,131,000 127,611,000 120,991,000 165,068,000 101,200,000 93,996,000 105,390,000 152,193,000 91,808,000 119,497,000 168,387,000 178,945,000 145,320,000 135,775,000 129,934,000 171,655,000 113,470,000 107,305,000 96,905,000 134,126,000 94,123,000 106,938,000 126,985,000 132,208,000 112,782,000 141,851,000 127,926,000 160,031,000 111,812,000 127,585,000 132,409,000 126,443,000 98,842,000 111,382,000 113,136,000 108,056,000 86,487,000 111,054,000 126,917,000 180,388,000 137,892,000 168,290,000 125,822,000 136,674,000 145,357,000 153,147,000 121,615,000 105,283,000 77,466,000 95,095,000 94,909,000 87,985,000 88,119,000 98,053,000 105,209,000 126,709,000 95,182,000  181,564,000 145,223,000 106,087,000 109,145,000 108,404,000 90,723,000 69,762,000 105,048,000 197,968,000 142,520,000 162,838,000 149,595,000 152,155,000 109,757,000 120,978,000 166,990,000 144,164,000 133,034,000 
      amounts payable to customers
    		24,275,000 34,393,000 42,587,000 42,720,000 62,569,000 72,346,000 60,032,000 59,019,000 22,391,000 2,830,000 154,000 419,000 292,000 3,422,000 36,000 21,000 7,193,000 19,768,000 5,823,000 10,788,000 18,772,000 17,213,000 3,444,000 4,017,000 14,546,000 15,463,000  3,394,000 16,833,000 12,083,000 251,000  13,070,000 19,466,000 3,231,000 19,537,000 35,441,000 42,217,000 45,076,000 56,778,000 44,842,000 44,796,000 35,994,000 33,745,000 32,805,000 24,665,000 8,884,000 12,828,000 12,386,000 18,239,000 15,278,000 19,964,000 17,761,000 17,327,000 11,997,000 15,519,000 25,661,000  23,914,000 38,109,000 51,014,000 64,336,000 94,468,000 105,778,000 45,772,000 21,650,000 4,715,000 2,753,000 12,864,000 4,985,000 9,181,000 10,409,000 19,197,000 10,596,000 27,101,000 23,935,000 
      dividends payable
    		48,340,000 46,555,000 46,671,000 46,872,000 47,195,000 45,563,000 45,597,000 45,451,000 45,444,000 43,602,000 43,598,000 43,452,000 43,446,000 41,608,000 41,604,000 41,487,000 41,484,000 40,562,000 40,560,000 40,475,000 40,470,000 37,654,000 37,650,000 37,547,000 37,543,000 36,678,000 36,663,000 36,532,000 36,526,000 35,641,000 35,590,000 35,500,000 35,469,000 34,577,000 34,544,000 34,473,000 34,404,000 33,533,000 33,472,000 33,415,000 33,388,000 32,488,000 32,442,000 32,400,000 32,373,000 31,493,000 31,403,000 31,373,000 31,346,000 30,486,000  30,416,000 30,393,000 29,527,000 29,479,000 29,399,000 29,358,000  28,407,000 28,316,000 28,278,000 27,222,000 27,129,000 26,967,000 26,761,000 25,841,000 25,841,000 25,714,000 26,479,000 25,307,000 26,023,000 25,873,000 25,897,000 24,927,000 24,770,000 25,008,000 
      interest payable on long-term debt
    		39,060,000 19,454,000 44,376,000 27,247,000 46,926,000 22,553,000 42,288,000 20,399,000 40,134,000 14,303,000 43,142,000 17,376,000 45,017,000 17,376,000 45,017,000 17,376,000 45,304,000 17,663,000 45,350,000 27,521,000 31,600,000 18,508,000 29,461,000 18,508,000 29,461,000 18,508,000 30,016,000 19,062,000 28,357,000 26,435,000 27,962,000 35,031,000 28,985,000 34,900,000 28,985,000 34,900,000 28,985,000 34,900,000 30,285,000 36,200,000 18,585,000 29,960,000 18,195,000 29,960,000 18,195,000 29,960,000 18,195,000 29,960,000 18,976,000 30,741,000 16,320,000 29,491,000 16,320,000 29,491,000 16,320,000 25,512,000 15,953,000  15,953,000 30,512,000 17,203,000 30,512,000 17,203,000 32,031,000 18,722,000 21,397,000 15,557,000 22,114,000 15,774,000 18,158,000 13,541,000 18,158,000 13,541,000 18,419,000 13,803,000 18,420,000 
      customer advances
    		  15,295,000 19,373,000   23,086,000 21,003,000   31,314,000 26,108,000   14,620,000 17,223,000   16,032,000 15,319,000 561,000 615,000 13,727,000 13,044,000 166,000 433,000 7,351,000 13,609,000 197,000 154,000 18,398,000 15,701,000 224,000 300,000 13,779,000 14,762,000 38,000 33,000 23,425,000 16,236,000 44,000 270,000 20,436,000 19,005,000 81,000 81,000 18,678,000 21,959,000 246,000 145,000 22,068,000 24,055,000 315,000 204,000 25,814,000 19,643,000 1,021,000  27,633,000 27,638,000 1,029,000 2,715,000 30,653,000 24,555,000 3,229,000 1,828,000 30,093,000 33,017,000   23,498,000 22,863,000     
      customer security deposits
    		28,739,000 30,358,000 36,091,000 36,265,000 36,674,000 30,600,000 30,843,000 28,764,000 34,024,000 34,382,000 28,829,000 24,283,000 25,200,000 20,766,000 20,273,000 19,292,000 19,272,000 19,503,000 17,623,000 17,199,000 15,226,000 14,999,000 15,510,000 16,210,000 16,801,000 18,519,000 23,842,000 25,703,000 18,468,000 18,973,000 22,503,000 20,372,000 17,522,000 17,512,000 16,692,000 16,019,000 16,094,000 16,101,000 16,757,000 16,490,000 18,329,000 18,463,000 16,391,000 15,761,000 16,166,000 15,581,000 15,690,000 16,183,000 16,830,000 17,138,000 18,926,000 17,942,000 16,847,000 17,021,000 17,685,000 17,321,000 17,672,000  18,508,000 18,320,000 18,618,000 19,426,000 19,565,000 17,430,000             
      other accruals and current liabilities
    		207,179,000 184,925,000 172,409,000 162,903,000 169,133,000 183,966,000 200,009,000 160,974,000 260,897,000 257,923,000 239,097,000 257,327,000 254,383,000 218,139,000 187,965,000 194,169,000 168,378,000 176,940,000 154,377,000 140,176,000 138,344,000 150,239,000 173,603,000 139,600,000 180,063,000 195,797,000 191,172,000 132,693,000 161,252,000 147,549,000 121,596,000 111,889,000 107,101,000 106,287,000 88,519,000 74,430,000 72,759,000 104,925,000 95,830,000 96,557,000 157,729,000 179,233,000 137,285,000 136,672,000 154,145,000 235,900,000 102,709,000 83,946,000 109,933,000 140,056,000 103,582,000 79,099,000 160,899,000 197,952,000 146,251,000 94,787,000 133,856,000  30,838,000 16,046,000 65,244,000 110,174,000 19,451,000 18,875,000 198,057,000 246,291,000 65,415,000 45,220,000 136,458,000 213,087,000 50,207,000 36,062,000 96,587,000 176,307,000 31,071,000 27,040,000 
      other liabilities
    		116,239,000 117,047,000 120,156,000 120,036,000 124,818,000 125,018,000 120,061,000 121,813,000 116,770,000 112,290,000 119,276,000 116,701,000 133,428,000 134,729,000 136,923,000 135,846,000                                                             
      deferred income taxes
    		1,153,427,000 1,072,436,000 1,089,394,000 1,111,165,000 1,172,068,000 1,199,909,000 1,164,512,000 1,124,170,000 1,030,526,000 1,000,526,000 879,676,000 698,229,000 767,207,000 709,598,000 799,599,000 660,420,000 742,638,000 763,441,000 735,236,000 696,054,000 783,377,000 777,299,000 708,774,000 653,382,000 647,602,000 618,850,000 598,285,000 512,686,000 491,520,000 482,682,000 453,285,000 891,287,000 881,547,000 837,098,000 803,166,000 823,795,000 807,955,000 844,916,000 999,399,000 137,200,000 39,383,000 39,260,000 36,421,000 40,323,000 47,153,000 39,650,000 23,127,000 79,359,000 15,148,000 34,241,000 19,112,000 10,755,000 14,727,000 20,281,000 14,921,000 15,423,000 22,885,000 34,917,000 20,901,000 24,476,000 32,893,000 40,600,000 48,621,000 53,863,000 33,009,000 26,197,000 6,340,000  84,297,000 41,253,000 17,468,000 8,550,000 21,271,000 23,951,000 16,533,000 23,402,000 
      taxes refundable to customers
    		297,602,000 302,293,000 303,344,000 305,645,000 302,733,000 316,455,000 317,838,000 268,562,000 347,066,000 354,274,000 360,276,000 362,098,000 346,577,000 348,480,000 350,628,000 354,089,000 353,736,000 355,375,000 357,354,000 357,508,000 357,945,000 360,331,000 361,556,000 366,503,000 366,184,000 365,380,000 366,448,000 370,628,000 366,183,000 365,091,000 366,768,000 95,739,000 93,321,000 93,506,000 93,940,000 93,318,000 91,452,000 93,674,000 94,468,000 89,448,000 95,157,000 90,214,000 90,303,000 91,736,000 90,463,000 90,779,000 84,781,000 85,655,000 65,069,000 65,066,000 66,396,000 66,392,000 65,554,000 65,550,000 65,547,000 65,543,000 70,343,000  69,589,000 69,585,000 67,057,000 67,053,000 67,050,000 67,046,000 18,459,000 18,456,000 18,452,000 18,449,000 14,037,000 14,033,000 14,031,000 14,026,000 10,437,000 10,433,000 10,430,000 10,426,000 
      cost of removal regulatory liability
    		302,932,000 300,256,000 296,660,000 292,477,000 289,356,000 288,819,000 284,687,000 277,694,000 272,740,000 265,626,000 263,707,000 259,947,000 256,092,000 252,471,000 249,208,000 245,636,000 241,377,000 237,867,000 234,641,000 230,079,000 227,043,000 224,546,000 222,172,000 221,699,000 218,340,000 215,864,000 214,842,000 212,311,000 213,560,000 207,711,000 205,554,000 204,630,000 199,739,000 196,901,000 195,544,000 193,424,000 191,217,000 189,421,000 184,784,000 184,907,000 180,106,000 178,096,000 175,941,000 173,199,000 166,996,000 165,138,000 163,238,000 157,622,000 151,846,000 149,651,000 147,267,000 139,611,000 148,668,000 146,771,000 144,770,000 135,940,000 133,759,000  125,862,000 124,032,000 123,357,000 121,954,000 120,797,000 105,546,000 107,245,000 105,855,000 103,877,000 103,100,000 101,251,000 99,924,000 98,613,000 91,226,000 88,949,000 87,986,000 86,907,000 85,076,000 
      other regulatory liabilities
    		137,025,000 140,828,000 147,561,000 151,452,000 164,390,000 165,023,000 165,988,000 165,441,000 190,907,000 189,378,000 191,499,000 188,803,000 199,094,000 196,589,000 204,476,000 200,643,000 182,430,000 177,685,000 168,188,000 161,573,000 160,501,000 157,371,000 148,350,000 142,367,000 159,259,000 156,722,000 150,337,000 146,743,000 128,184,000 124,868,000 118,551,000 113,716,000 88,647,000 91,661,000 104,054,000 99,789,000 102,018,000 101,104,000 113,187,000 108,617,000 126,371,000 119,631,000 96,959,000 81,152,000 90,643,000 94,000,000 69,897,000 61,549,000 33,247,000 31,904,000 22,911,000 21,014,000 39,657,000 37,327,000 100,832,000 94,684,000 92,811,000  88,263,000 89,334,000 86,106,000 87,215,000 116,035,000 120,229,000 115,617,000 105,874,000 96,378,000 91,933,000 95,846,000 92,343,000 78,374,000 76,659,000 73,212,000 70,842,000 70,995,000 75,456,000 
      other post-retirement liabilities
    		3,393,000 3,404,000 3,476,000 3,511,000 2,741,000 2,803,000 2,859,000 2,915,000 2,921,000 2,977,000 2,998,000                                                                  
      asset retirement obligations
    		188,305,000 193,802,000 199,310,000 203,006,000 157,653,000 161,027,000 164,777,000 165,492,000 160,415,000 160,910,000 161,221,000 161,545,000 152,100,000 207,047,000 208,128,000 209,639,000 191,853,000 192,127,000 192,682,000 192,228,000 128,666,000 128,779,000 128,382,000 127,458,000 104,732,000 104,138,000 104,343,000 108,235,000 101,833,000 106,481,000 106,516,000 106,395,000 115,354,000 114,014,000 113,194,000 112,330,000 114,804,000 171,991,000 158,108,000 156,805,000 119,644,000 119,164,000 118,035,000 117,713,000 121,760,000 120,884,000 120,122,000 119,511,000 126,879,000 125,328,000 123,984,000 119,246,000 78,232,000 77,230,000 76,930,000 75,731,000 65,583,000  100,580,000 101,618,000 92,601,000 92,461,000 91,538,000 91,373,000 86,559,000 90,954,000 92,597,000 93,247,000 74,653,000 76,357,000 77,253,000 75,939,000 80,739,000 79,609,000 78,464,000  
      commitments and contingencies
    		                                                                            
      total capitalization and liabilities
    		8,446,160,000 8,479,963,000 8,301,448,000 8,319,770,000 8,481,037,000 8,677,025,000 8,587,492,000 8,280,260,000 8,106,632,000 7,967,242,000 8,134,914,000 7,896,262,000 8,112,086,000 7,805,023,000 7,589,673,000 7,464,825,000 7,208,675,000 7,115,652,000 7,039,168,000 6,964,935,000 7,118,985,000 6,708,659,000 6,702,658,000 6,462,157,000 6,336,247,000 6,278,975,000 6,186,928,000 6,036,486,000 5,974,103,000 5,914,573,000 5,791,932,000 6,103,320,000 5,867,507,000 5,804,675,000 5,661,717,000 5,636,387,000 5,541,197,000 5,801,024,000 6,190,332,000 6,702,139,000 6,889,668,000 7,227,946,000 7,145,094,000 6,739,597,000 6,588,458,000 6,567,195,000 6,264,984,000 6,218,347,000 6,343,940,000 6,274,689,000 6,108,197,000 5,935,142,000 5,836,853,000 5,835,496,000 5,747,755,000 5,284,742,000 5,133,265,000  4,981,981,000 5,105,625,000 4,949,361,000 4,985,788,000 4,817,701,000 4,769,129,000 4,355,302,000 4,195,537,000 4,224,187,000 4,130,187,000 4,293,861,000 4,163,075,000 4,031,423,000 3,888,412,000 3,793,125,000 3,961,018,000 3,799,353,000 3,734,331,000 
      cash held in trust for bondholders
    		 51,352,000                                                                           
      receivables – net of allowance for uncollectible accounts of 23,451 and 26,194, respectively
    		 291,132,000                                                                           
      authorized - 200,000,000 shares; issued and outstanding – 90,397,698 shares and 91,005,993 shares, respectively
    		 90,398,000                                                                           
      receivables – net of allowance for uncollectible accounts of 28,384 and 26,194, respectively
    		  202,821,000                                                                          
      authorized - 200,000,000 shares; issued and outstanding – 90,612,955 shares and 91,005,993 shares, respectively
    		  90,613,000                                                                          
      less — accumulated depreciation, depletion and amortization
    		   7,185,593,000    6,335,441,000    5,985,432,000    6,719,356,000    6,353,785,000    5,695,328,000    5,462,696,000    5,271,486,000    5,085,099,000    3,929,428,000    2,502,700,000    2,161,477,000    1,876,010,000    1,646,394,000  2,285,313,000 2,236,152,000 2,187,269,000 2,164,383,000 2,118,594,000 2,078,625,000 2,051,482,000 2,010,584,000  1,938,841,000 1,719,869,000 1,686,616,000 1,650,715,000 1,616,488,000 1,583,181,000 1,960,265,000 1,893,449,000 1,846,665,000 1,825,314,000 
      receivables — net of allowance for uncollectible accounts of 26,194 and 36,295, respectively
    		   127,222,000                                                                         
      receivables – net of allowance for uncollectible accounts of 32,622 and 36,295, respectively
    		    156,846,000                                                                        
      authorized - 200,000,000 shares; issued and outstanding – 91,612,488 shares and 91,819,405 shares, respectively
    		    91,612,000                                                                        
      accumulated other comprehensive income
    		    5,050,000 75,340,000 67,381,000                             -5,640,000 7,739,000 82,186,000 98,456,000 93,372,000 92,248,000 126,689,000 122,473,000                     -42,396,000 17,234,000 44,171,000 50,101,000 2,963,000    -6,203,000 43,984,000 21,733,000 32,991,000 30,416,000 
      receivables – net of allowance for uncollectible accounts of 39,695 and 36,295, respectively
    		     180,717,000                                                                       
      authorized - 200,000,000 shares; issued and outstanding – 92,031,724 shares and 91,819,405 shares, respectively
    		     92,032,000                                                                       
      receivables – net of allowance for uncollectible accounts of 37,116 and 36,295, respectively
    		      189,669,000                                                                      
      authorized - 200,000,000 shares; issued and outstanding – 92,115,581 shares and 91,819,405 shares, respectively
    		      92,116,000                                                                      
      hedging collateral deposits
    		          1,600,000 91,670,000 154,470,000 102,370,000  88,610,000 1,710,000    7,699,000 10,728,000 9,666,000 6,832,000 6,835,000 1,983,000 2,784,000 3,441,000 2,283,000 3,657,000 4,465,000 1,741,000 2,142,000 1,771,000  1,484,000 3,008,000 9,963,000 9,551,000 11,124,000 11,101,000 15,726,000 13,468,000 2,734,000    1,094,000 694,000 750,000  364,000 3,392,000 18,872,000 25,118,000 19,701,000 37,984,000 61,826,000 31,446,000 11,134,000 8,222,000 13,657,000 1,092,000 848,000 6,359,000 22,195,000 3,743,000 1,000 30,778,000 2,354,000 1,996,000 4,066,000 3,400,000 2,034,000 9,760,000 19,676,000 
      receivables — net of allowance for uncollectible accounts of 36,295 and 40,228, respectively
    		       160,601,000                                                                     
      receivables – net of allowance for uncollectible accounts of 43,108 and 40,228, respectively
    		        183,377,000                                                                    
      authorized - 200,000,000 shares; issued and outstanding – 91,803,996 shares and 91,478,064 shares, respectively
    		        91,804,000                                                                    
      receivables – net of allowance for uncollectible accounts of 48,146 and 40,228, respectively
    		         257,965,000                                                                   
      authorized - 200,000,000 shares; issued and outstanding – 91,795,080 shares and 91,478,064 shares, respectively
    		         91,795,000                                                                   
      receivables – net of allowance for uncollectible accounts of 43,925 and 40,228, respectively
    		          332,410,000                                                                  
      authorized - 200,000,000 shares; issued and outstanding – 91,786,806 shares and 91,478,064 shares, respectively
    		          91,787,000                                                                  
      receivables — net of allowance for uncollectible accounts of 40,228 and 31,639, respectively
    		           361,626,000                                                                 
      materials, supplies and emission allowances
    		           40,637,000 39,634,000 48,887,000 47,351,000 53,560,000 53,740,000 52,212,000 51,694,000 51,877,000                                                         
      pension and other post-retirement liabilities
    		           3,065,000 4,732,000 4,756,000 4,775,000 7,526,000 117,291,000 118,804,000 124,097,000 127,181,000 127,237,000 126,959,000 129,616,000 133,729,000 53,142,000 49,213,000 40,842,000 66,103,000 138,275,000 133,852,000 125,055,000 149,079,000 299,326,000 291,259,000 272,672,000 277,113,000 222,756,000 216,852,000 205,431,000 202,807,000 144,136,000 137,204,000 126,108,000 134,202,000 152,174,000 145,085,000 139,664,000 158,014,000 511,516,000 500,946,000 514,116,000 516,197,000 481,331,000 472,717,000 467,396,000 481,520,000 435,517,000  433,010,000 446,082,000 420,361,000 414,479,000 401,737,000 415,888,000 61,404,000 67,203,000 73,076,000 78,909,000        32,918,000 
      receivables – net of allowance for uncollectible accounts of 41,983 and 31,639, respectively
    		            399,033,000                                                                
      authorized - 200,000,000 shares; issued and outstanding – 91,465,569 shares and 91,181,549 shares, respectively
    		            91,466,000                                                                
      receivables – net of allowance for uncollectible accounts of 41,483 and 31,639, respectively
    		             339,421,000                                                               
      authorized - 200,000,000 shares; issued and outstanding – 91,449,226 shares and 91,181,549 shares, respectively
    		             91,449,000                                                               
      receivables – net of allowance for uncollectible accounts of 35,599 and 31,639, respectively
    		              264,255,000                                                              
      authorized - 200,000,000 shares; issued and outstanding – 91,436,837 shares and 91,181,549 shares, respectively
    		              91,437,000                                                              
      assets held for sale
    		                   53,424,000                                                         
      receivables — net of allowance for uncollectible accounts of 31,639 and 22,810, respectively
    		               205,294,000                                                             
      prepaid post-retirement benefit costs
    		               149,151,000 93,627,000 89,101,000 80,032,000 76,035,000 75,235,000 71,381,000 64,999,000 60,517,000 88,939,000 86,802,000 84,609,000 82,733,000 61,371,000 59,586,000 57,054,000 56,370,000 18,619,000 18,315,000 17,960,000 17,649,000 27,158,000 26,344,000 25,357,000 24,459,000 46,062,000 43,400,000 39,520,000 36,512,000 29,532,000 28,366,000 24,865,000 22,774,000                 21,738,000 21,447,000 20,775,000          
      receivables – net of allowance for uncollectible accounts of 32,322 and 22,810, respectively
    		                188,863,000                                                            
      authorized - 200,000,000 shares; issued and outstanding – 91,172,701 shares and 90,954,696 shares, respectively
    		                91,173,000                                                            
      deferred credits
    		                                                                            
      other deferred credits
    		                139,774,000 141,379,000 145,689,000 139,177,000 137,217,000 134,633,000 140,867,000 122,368,000 114,211,000 112,813,000 113,878,000 111,025,000 110,128,000 109,794,000 106,527,000 109,019,000 115,436,000 115,636,000 116,849,000 119,242,000 120,856,000 122,280,000 125,937,000 128,073,000 128,406,000 126,908,000 133,426,000 133,908,000 137,664,000 135,622,000 143,160,000 141,510,000 160,406,000 155,897,000 166,965,000 161,346,000 153,150,000 150,467,000 156,921,000 153,851,000 150,425,000  154,805,000 151,633,000 139,870,000 140,146,000 145,324,000 144,439,000 124,683,000 126,829,000 129,250,000 128,316,000 119,898,000 116,238,000 115,856,000 110,794,000 99,533,000 93,007,000 73,646,000 72,885,000 
      receivables – net of allowance for uncollectible accounts of 30,128 and 22,810, respectively
    		                 229,479,000                                                           
      authorized - 200,000,000 shares; issued and outstanding – 91,163,797 shares and 90,954,696 shares, respectively
    		                 91,164,000                                                           
      receivables – net of allowance for uncollectible accounts of 26,221 and 22,810, respectively
    		                  178,584,000                                                          
      authorized - 200,000,000 shares; issued and outstanding – 91,152,710 shares and 90,954,696 shares, respectively
    		                  91,153,000                                                          
      receivables — net of allowance for uncollectible accounts of 22,810 and 25,788, respectively
    		                   143,583,000                                                         
      receivables – net of allowance for uncollectible accounts of 26,462 and 25,778, respectively
    		                    136,438,000                                                        
      authorized - 200,000,000 shares; issued and outstanding – 90,943,652 shares and 86,315,287 shares, respectively
    		                    90,944,000                                                        
      receivables – net of allowance for uncollectible accounts of 29,627 and 25,788, respectively
    		                     172,011,000                                                       
      authorized - 200,000,000 shares; issued and outstanding – 86,561,532 shares and 86,315,287 shares, respectively
    		                     86,562,000                                                       
      receivables – net of allowance for uncollectible accounts of 26,717and 25,788, respectively
    		                      158,944,000                                                      
      authorized - 200,000,000 shares; issued and outstanding – 86,551,528 shares and 86,315,287 shares, respectively
    		                      86,552,000                                                      
      receivables — net of allowance for uncollectible accounts of 25,788 and 24,537, respectively
    		                       139,956,000                                                     
      materials and supplies — at average cost
    		                       40,717,000    35,823,000    33,926,000    33,866,000    30,414,000    27,817,000    29,904,000    28,577,000    27,932,000  31,707,000 31,560,000 24,987,000 32,753,000 27,754,000 28,501,000 24,520,000 24,768,000 24,257,000 25,694,000 31,317,000 33,310,000 37,618,000 41,569,000 35,669,000 30,621,000 31,853,000 32,925,000 36,693,000 
      receivables – net of allowance for uncollectible accounts of 29,137 and 24,537, respectively
    		                        178,762,000                                                    
      authorized - 200,000,000 shares; issued and outstanding – 86,306,593 shares and 85,956,814 shares, respectively
    		                        86,307,000                                                    
      receivables – net of allowance for uncollectible accounts of 30,234 and 24,537, respectively
    		                         235,586,000                                                   
      authorized - 200,000,000 shares; issued and outstanding – 86,300,675 shares and 85,956,814 shares, respectively
    		                         86,301,000                                                   
      receivables – net of allowance for uncollectible accounts of 26,318 and 24,537, respectively
    		                          192,604,000                                                  
      authorized - 200,000,000 shares; issued and outstanding – 86,270,957 shares and 85,956,814 shares, respectively
    		                          86,271,000                                                  
      receivables — net of allowance for uncollectible accounts of 24,537 and 22,526, respectively
    		                           141,498,000                                                 
      receivables – net of allowance for uncollectible accounts of 26,711 and 22,526, respectively
    		                            151,005,000                                                
      authorized - 200,000,000 shares; issued and outstanding – 85,943,875 shares and 85,543,125 shares, respectively
    		                            85,944,000                                                
      receivables – net of allowance for uncollectible accounts of 28,592 and 22,526, respectively
    		                             198,922,000                                               
      authorized - 200,000,000 shares; issued and outstanding – 85,881,897 shares and 85,543,125 shares, respectively
    		                             85,882,000                                               
      receivables – net of allowance for uncollectible accounts of 24,511 and 22,526, respectively
    		                              161,029,000                                              
      authorized - 200,000,000 shares; issued and outstanding – 85,760,846 shares and 85,543,125 shares, respectively
    		                              85,761,000                                              
      receivables — net of allowance for uncollectible accounts of 22,526 and 21,109, respectively
    		                               112,383,000                                             
      receivables – net of allowance for uncollectible accounts of 27,545 and 21,109, respectively
    		                                127,876,000                                            
      authorized - 200,000,000 shares; issued and outstanding – 85,467,963 shares and 85,118,886 shares, respectively
    		                                85,468,000                                            
      long-term debt, net of unamortized discount and debt issuance costs
    		                                1,787,954,000 2,087,385,000 2,086,817,000 2,086,252,000 2,085,686,000 2,085,123,000 2,084,562,000 2,084,009,000                                     
      receivables – net of allowance for uncollectible accounts of 27,199 and 21,109, respectively
    		                                 171,162,000                                           
      authorized - 200,000,000 shares; issued and outstanding – 85,375,068 shares and 85,118,886 shares, respectively
    		                                 85,375,000                                           
      receivables – net of allowance for uncollectible accounts of 22,701 and 21,109, respectively
    		                                  161,025,000                                          
      authorized - 200,000,000 shares; issued and outstanding – 85,292,570 shares and 85,118,886 shares, respectively
    		                                  85,293,000                                          
      unamortized investment tax credit
    		                                  340,000 383,000 470,000 557,000 644,000 731,000 834,000 937,000 1,041,000 1,145,000 1,253,000 1,361,000 1,470,000 1,579,000 1,685,000 1,792,000 1,898,000 2,005,000 2,150,000 2,296,000 2,441,000 2,586,000 2,761,000  3,112,000 3,288,000 3,463,000 3,638,000 3,814,000 3,989,000 4,165,000 4,340,000 4,516,000 4,691,000 4,866,000 5,042,000 5,217,000 5,392,000 5,568,000 5,743,000 5,919,000 6,094,000 
      receivables — net of allowance for uncollectible accounts of 21,109 and 29,029, respectively
    		                                   133,201,000                                         
      receivables – net of allowance for uncollectible accounts of 27,413 and 29,029, respectively
    		                                    140,911,000                                        
      authorized - 200,000,000 shares; issued and outstanding – 84,948,691 shares and 84,594,383 shares, respectively
    		                                    84,949,000                                        
      receivables – net of allowance for uncollectible accounts of 34,236 and 29,029, respectively
    		                                     137,718,000                                       
      authorized - 200,000,000 shares; issued and outstanding – 84,892,747 shares and 84,594,383 shares, respectively
    		                                     84,893,000                                       
      receivables – net of allowance for uncollectible accounts of 30,946 and 29,029, respectively
    		                                      211,112,000                                      
      authorized - 200,000,000 shares; issued and outstanding – 84,739,068 shares and 84,594,383 shares, respectively
    		                                      84,739,000                                      
      receivables — net of allowance for uncollectible accounts of 29,029 and 31,811, respectively
    		                                       105,004,000                                     
      receivables – net of allowance for uncollectible accounts of 34,226 and 31,811, respectively
    		                                        135,427,000                                    
      authorized - 200,000,000 shares; issued and outstanding – 84,528,930 shares and 84,157,220 shares, respectively
    		                                        84,529,000                                    
      long-term debt, net of current portion
    		                                        2,099,000,000 1,649,000,000 1,649,000,000 1,649,000,000 1,649,000,000 1,649,000,000 1,649,000,000 1,649,000,000 1,649,000,000 1,649,000,000 1,149,000,000 1,149,000,000 1,149,000,000 1,149,000,000 1,399,000,000 899,000,000 899,000,000  899,000,000 1,049,000,000 1,049,000,000 1,049,000,000 1,049,000,000 1,249,000,000 1,249,000,000 999,000,000 999,000,000 999,000,000 999,000,000 899,000,000 799,000,000 799,000,000 799,000,000 999,000,000 1,095,466,000 1,095,675,000 
      receivables – net of allowance for uncollectible accounts of 40,922 and 31,811, respectively
    		                                         207,673,000                                   
      authorized - 200,000,000 shares; issued and outstanding – 84,385,366 shares and 84,157,220 shares, respectively
    		                                         84,385,000                                   
      receivables – net of allowance for uncollectible accounts of 35,443 and 31,811, respectively
    		                                          166,887,000                                  
      authorized - 200,000,000 shares; issued and outstanding – 84,264,485 shares and 84,157,220 shares, respectively
    		                                          84,264,000                                  
      receivables — net of allowance for uncollectible accounts of 31,811 and 27,144, respectively
    		                                           149,735,000                                 
      receivables – net of allowance for uncollectible accounts of 36,197 and 27,144, respectively
    		                                            202,437,000                                
      authorized - 200,000,000 shares; issued and outstanding – 84,086,437 shares and 83,661,969 shares, respectively
    		                                            84,086,000                                
      receivables – net of allowance for uncollectible accounts of 38,935 and 27,144 respectively
    		                                             267,512,000                               
      authorized - 200,000,000 shares; issued and outstanding – 83,980,596 shares and 83,661,969 shares, respectively
    		                                             83,981,000                               
      less - accumulated depreciation, depletion
    		                                                                            
      and amortization
    		                                              2,242,521,000  2,088,337,000 2,007,535,000 1,935,448,000                          
      receivables – net of allowance for uncollectible accounts
    		                                                                            
      of 31,445 and 27,144 respectively
    		                                              164,074,000                              
      authorized - 200,000,000 shares; issued
    		                                                                            
      and outstanding – 83,741,402 shares and
    		                                                                            
      83,661,969 shares, respectively
    		                                              83,741,000                              
      receivables — net of allowance for uncollectible accounts of 27,144 and 30,317, respectively
    		                                               133,182,000                             
      unbilled utility revenue
    		                                               19,483,000 13,643,000 41,735,000 47,134,000 19,652,000 12,212,000 31,318,000 47,335,000 17,284,000 13,399,000 48,551,000 59,211,000 20,920,000 12,957,000 38,634,000 55,012,000 18,884,000 14,568,000 55,070,000 79,404,000 24,364,000 19,580,000 75,084,000 78,480,000 20,682,000 20,569,000 58,850,000 67,866,000 25,538,000 
      authorized — 200,000,000 shares; issued and outstanding — 83,661,969 shares and 83,330,140 shares, respectively
    		                                               83,662,000                             
      of 34,887 and 30,317, respectively
    		                                                165,047,000                            
      and outstanding – 83,587,858 shares and
    		                                                                            
      83,330,140 shares, respectively
    		                                                83,588,000 83,522,000 83,482,000                          
      of 38,996 and 30,317, respectively
    		                                                 203,099,000                           
      and outstanding – 83,521,745 shares and
    		                                                                            
      receivables – net of allowance for uncollectible accounts of 34,030 and 30,317, respectively
    		                                                  143,567,000                          
      and outstanding – 83,482,125 shares and
    		                                                                            
      total common shareholders’ equity before
    		                                                                            
      items of other comprehensive loss
    		                                                  2,100,854,000                          
      receivables — net of allowance for uncollectible accounts of 30,317 and 31,039, respectively
    		                                                   115,818,000                         
      authorized — 200,000,000 shares; issued and outstanding — 83,330,140 shares and 82,812,677 shares, respectively
    		                                                   83,330,000                         
      total common shareholders’ equity before items of other comprehensive loss
    		                                                   2,059,115,000 2,037,180,000 2,018,776,000 1,974,280,000 1,939,584,000    1,790,956,000                 
      less—accumulated depreciation, depletion and amortization
    		                                                    1,817,655,000  1,694,366,000                      
      receivables—net of allowance for uncollectible accounts of 38,538 and 31,039, respectively
    		                                                    113,949,000                        
      materials and supplies—at average cost
    		                                                    28,137,000  27,263,000                      
      receivables – net of allowance for uncollectible accounts of 43,124 and 31,039, respectively
    		                                                     168,757,000                       
      authorized - 200,000,000 shares; issued and outstanding – 83,173,850 shares and 82,812,677 shares, respectively
    		                                                     83,174,000                       
      receivables—net of allowance for uncollectible accounts of 35,849 and 31,039, respectively
    		                                                      152,888,000                      
      authorized —200,000,000 shares;
    		                                                                            
      issued and outstanding – 83,038,485 shares and 82,812,677 shares, respectively
    		                                                      83,038,000                      
      receivables — net of allowance for uncollectible accounts of 31,039 and 30,961, respectively
    		                                                       131,885,000                     
      investments in unconsolidated subsidiaries
    		                                                       1,306,000 1,367,000 1,443,000 13,728,000 14,828,000 14,037,000 13,713,000 14,728,000 16,257,000 15,094,000 13,667,000 13,443,000 16,279,000 16,916,000 16,605,000 17,825,000 18,256,000 16,377,000 15,850,000 13,258,000 11,590,000 
      authorized — 200,000,000 shares; issued and outstanding — 82,812,677 shares and 82,075,470 shares, respectively
    		                                                       82,813,000                     
      less – accumulated depreciation, depletion and amortization
    		                                                        1,607,088,000                    
      receivables – net of allowance for uncollectible accounts of 39,221 and 30,961, respectively
    		                                                        165,576,000                    
      materials and supplies – at average cost
    		                                                        28,923,000                    
      total common shareholder equity before items of other comprehensive loss
    		                                                        1,925,709,000  1,819,592,000  1,779,892,000 1,747,998,000 1,687,246,000      1,689,544,000 1,670,531,000 1,707,273,000      
      receivables — net of allowance for uncollectible accounts of 44,132 and 30,961, respectively
    		                                                         227,898,000                   
      item 1.
    		                                                                            
      cash held in escrow
    		                                                           2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000       61,964,000     
      receivables — net of allowance for uncollectible accounts of 35,870 and 30,961, respectively
    		                                                          147,829,000                  
      authorized - 200,000,000 shares;
    		                                                                            
      issued and outstanding - 82,338,454 shares and 82,075,470 shares, respectively
    		                                                          82,338,000                  
      receivables — net of allowance for uncollectible accounts of 30,961 and 38,334, respectively
    		                                                           132,136,000                 
      intangible assets
    		                                                           1,677,000 20,188,000 20,637,000 21,087,000 21,536,000 24,627,000 25,123,000 25,620,000 26,174,000 26,839,000 27,505,000 28,170,000 28,836,000 29,757,000 30,423,000 30,833,000 31,498,000 
      authorized — 200,000,000 shares; issued and outstanding — 82,075,470 shares and 80,499,915 shares, respectively
    		                                                           82,075,000                 
      receivables — net of allowance for uncollectible accounts of 40,786 and 38,334, respectively
    		                                                            143,684,000                
      receivables — net of allowance for uncollectible accounts of 50,993 and 38,334, respectively
    		                                                             226,566,000               
      receivables — net of allowance for uncollectible accounts of 42,955 and 38,334, respectively
    		                                                              176,202,000              
      receivables — net of allowance for uncollectible accounts of 38,334 and 33,117, respectively
    		                                                               144,466,000             
      authorized — 200,000,000 shares; issued and outstanding — 80,499,915 shares and 79,120,544 shares, respectively
    		                                                               80,500,000             
      total common shareholders’ equity before items of other comprehensive income
    		                                                               1,631,632,000    1,600,636,000    1,636,322,000    1,413,146,000 
      receivables — net of allowance for uncollectible accounts of 45,209 and 33,117, respectively
    		                                                                200,594,000            
      total common shareholder equity before items of other comprehensive income
    		                                                                1,617,438,000 1,592,823,000 1,544,366,000      1,507,877,000 1,483,843,000 1,421,857,000  
      receivables — net of allowance for uncollectible accounts of 54,299 and 33,117, respectively
    		                                                                 304,500,000           
      receivables — net of allowance for uncollectible accounts of 41,369 and 33,117, respectively
    		                                                                  229,220,000          
      receivables — net of allowance for uncollectible accounts of 33,117 and 28,654, respectively
    		                                                                   185,397,000         
      prepaid pension and other post-retirement benefit costs
    		                                                                   21,034,000         
      authorized — 200,000,000 shares; issued and outstanding — 79,120,544 shares and 83,461,308 shares, respectively
    		                                                                   79,121,000         
      receivables — net of allowance for uncollectible accounts of 35,588 and 28,654, respectively
    		                                                                    302,522,000        
      post-retirement liabilities
    		                                                                    60,152,000 62,372,000 66,706,000 70,555,000 24,310,000 26,953,000 31,512,000  
      receivables – net of allowance for uncollectible accounts of 42,687 and 28,654, respectively
    		                                                                     363,872,000       
      receivables — net of allowance for uncollectible accounts of 34,106 and 28,654, respectively
    		                                                                      242,440,000      
      authorized - 200,000,000 shares; issued and outstanding — 83,946,575 shares and 83,461,308 shares, respectively
    		                                                                      83,947,000      
      receivables — net of allowance for uncollectible accounts of 28,654 and 31,427, respectively
    		                                                                       172,380,000     
      authorized — 200,000,000 shares; issued and outstanding — 83,461,308 shares and 83,402,670 shares, respectively
    		                                                                       83,461,000     
      receivables — net of allowance for uncollectible accounts of 34,107 and 31,427, respectively
    		                                                                        222,249,000    
      receivables — net of allowance for uncollectible accounts of 44,471 and 31,427, respectively
    		                                                                         335,666,000   
      receivables — net of allowance for uncollectible accounts of 35,677 and 31,427, respectively
    		                                                                          192,608,000  
      authorized - 200,000,000 shares; issued and outstanding – 82,624,576 shares and 83,402,670 shares, respectively
    		                                                                          82,625,000  
      receivables — net of allowance for uncollectible accounts of 31,427 and 26,940, respectively
    		                                                                           144,254,000 
      authorized — 200,000,000 shares; issued and outstanding — 83,402,670 shares and 84,356,748 shares, respectively
    		                                                                           83,403,000 
      asset retirement obligation
    		                                                                           77,392,000 
    The information provided in this report is taken from www.sec.gov and many other data providers. While we have conducted our best efforts to ensure that the parsed data is accurate, we cannot guarantee its accuracy. Please use caution and understand that any consequences of its use are your own responsibility.