| Production factors | Total assets | Total debts | Operating expenses | Total electricity sold | Total revenue | Total enterprise value | CO2 emissions | Year | Statistics | Million JPY | Million JPY | Million JPY | MWh | Million JPY | Million JPY | CO2-tons |
| 2003 | Avg. | 4,465,605 | 3,561,477 | 1,379,535 | 91,905,433 | 1,593,677 | 3,981,324 | 39,414,444 | Max. | 13,434,326 | 11,264,581 | 4,231,568 | 276,012,209 | 4,760,468 | 11,111,546 | 127,200,000 | Min. | 1,342,188 | 995,523 | 385,961 | 25,624,361 | 441,839 | 1,182,516 | 10,290,000 | SD | 3,635,846 | 3,063,621 | 1,146,055 | 75,710,121 | 1,292,679 | 3,040,231 | 34,141,577 |
| 2004 | Avg. | 4,342,806 | 3,392,945 | 1,392,252 | 95,359,384 | 1,628,767 | 3,845,022 | 39,459,311 | Max. | 13,101,186 | 10,766,422 | 4,231,888 | 286,740,584 | 4,851,769 | 11,602,606 | 109,200,000 | Min. | 1,305,437 | 952,755 | 390,704 | 26,874,339 | 460,958 | 1,162,507 | 9,790,000 | SD | 3,522,907 | 2,909,690 | 1,145,031 | 78,585,385 | 1,318,702 | 3,169,047 | 29,286,607 |
| 2005 | Avg. | 4,357,095 | 3,326,625 | 1,434,394 | 97,245,806 | 1,651,795 | 4,015,784 | 40,798,889 | Max. | 13,031,464 | 10,476,451 | 4,325,016 | 288,654,751 | 4,991,182 | 12,185,730 | 107,300,000 | Min. | 1,404,443 | 1,001,007 | 414,205 | 27,966,251 | 469,966 | 1,240,030 | 10,830,000 | SD | 3,491,916 | 2,810,633 | 1,163,742 | 79,008,615 | 1,351,239 | 3,290,078 | 28,645,106 |
| 2006 | Avg. | 4,296,315 | 3,224,315 | 1,473,627 | 98,005,219 | 1,679,884 | 4,052,379 | 39,927,222 | Max. | 12,924,022 | 10,150,813 | 4,426,286 | 287,621,627 | 5,118,646 | 12,173,136 | 97,600,000 | Min. | 1,380,425 | 995,246 | 422,134 | 28,160,564 | 476,019 | 1,297,458 | 10,360,000 | SD | 3,457,160 | 2,714,267 | 1,194,735 | 78,585,812 | 1,384,016 | 3,280,331 | 26,478,384 |
| 2007 | Avg. | 4,302,088 | 3,291,292 | 1,619,652 | 101,339,239 | 1,739,205 | 3,891,591 | 45,541,887 | Max. | 13,057,731 | 10,675,031 | 5,075,051 | 297,396,731 | 5,284,445 | 10,912,075 | 126,500,000 | Min. | 1,364,394 | 1,023,718 | 440,847 | 29,268,787 | 469,020 | 1,266,823 | 11,460,000 | SD | 3,486,517 | 2,856,396 | 1,375,140 | 81,092,176 | 1,430,928 | 2,903,728 | 33,163,979 |
| 2008 | Avg. | 4,311,563 | 3,378,009 | 1,762,906 | 97,939,836 | 1,838,667 | 3,725,786 | 43,103,333 | Max. | 12,990,060 | 10,858,951 | 5,532,670 | 288,956,373 | 5,683,338 | 10,941,645 | 120,700,000 | Min. | 1,347,486 | 1,001,935 | 489,626 | 28,154,209 | 515,749 | 1,259,239 | 10,850,000 | SD | 3,462,285 | 2,906,011 | 1,495,492 | 78,602,889 | 1,536,831 | 2,887,395 | 31,444,105 |
| 2009 | Avg. | 4,231,181 | 3,291,930 | 1,487,044 | 94,559,728 | 1,630,706 | 3,580,642 | 38,311,111 | Max. | 12,643,034 | 10,482,383 | 4,487,580 | 280,167,440 | 4,852,702 | 10,610,544 | 107,500,000 | Min. | 1,320,236 | 998,380 | 421,412 | 27,175,151 | 463,738 | 1,255,051 | 10,160,000 | SD | 3,377,277 | 2,807,766 | 1,209,665 | 76,153,985 | 1,313,912 | 2,801,966 | 28,721,640 |
| 2010 | Avg. | 4,468,755 | 3,640,106 | 1,553,555 | 99,877,397 | 1,718,837 | 3,409,217 | 40,972,556 | Max. | 14,255,958 | 12,991,136 | 4,710,469 | 293,386,665 | 5,203,534 | 10,176,925 | 109,900,000 | Min. | 1,316,794 | 1,006,916 | 434,950 | 29,100,358 | 486,139 | 1,083,602 | 9,500,000 | SD | 3,835,032 | 3,531,110 | 1,270,858 | 79,865,659 | 1,408,952 | 2,713,838 | 29,854,442 |
| 2011 | Avg. | 4,676,075 | 4,043,128 | 1,796,601 | 94,707,593 | 2,027,739 | 2,912,639 | 47,976,287 | Max. | 15,149,263 | 14,621,783 | 5,319,364 | 268,229,749 | 7,701,813 | 7,488,532 | 124,400,000 | Min. | 1,313,106 | 1,030,068 | 474,225 | 28,444,127 | 492,984 | 1,025,457 | 15,628,000 | SD | 4,097,329 | 4,001,908 | 1,448,806 | 73,139,772 | 2,122,533 | 1,979,356 | 32,595,518 |
| 2012 | Avg. | 4,686,176 | 4,127,626 | 1,927,074 | 93,808,443 | 1,952,830 | 2,873,832 | 53,321,281 | Max. | 14,619,772 | 13,788,023 | 5,929,729 | 269,032,965 | 6,710,884 | 7,538,807 | 141,200,000 | Min. | 1,318,731 | 1,057,315 | 470,347 | 27,410,102 | 482,227 | 900,594 | 18,642,990 | SD | 3,947,264 | 3,745,077 | 1,614,906 | 73,271,192 | 1,839,130 | 2,013,272 | 36,174,926 |
| 2013 | Avg. | 4,680,315 | 4,110,129 | 2,016,494 | 93,442,828 | 2,280,060 | 3,196,480 | 53,299,740 | Max. | 14,369,843 | 13,139,830 | 6,168,860 | 266,692,084 | 8,308,425 | 7,346,758 | 141,400,000 | Min. | 1,334,456 | 1,065,950 | 479,019 | 27,214,049 | 500,791 | 1,027,942 | 17,703,434 | SD | 3,867,108 | 3,553,853 | 1,691,582 | 72,633,115 | 2,294,840 | 1,974,398 | 36,424,436 |
| 2014 | Avg. | 4,594,658 | 3,980,654 | 2,046,801 | 90,607,479 | 2,262,950 | 3,123,444 | 50,483,713 | Max. | 13,727,610 | 12,069,664 | 6,233,725 | 257,045,944 | 7,561,133 | 6,763,694 | 129,800,000 | Min. | 1,338,671 | 1,062,094 | 476,976 | 26,392,144 | 516,067 | 1,043,817 | 17,830,000 | SD | 3,665,241 | 3,253,602 | 1,720,854 | 69,806,163 | 2,078,961 | 1,826,821 | 33,317,439 |
| 2015 | Avg. | 4,473,834 | 3,803,205 | 1,828,779 | 87,712,054 | 2,102,094 | 3,223,828 | 47,548,264 | Max. | 13,189,615 | 11,389,110 | 5,469,764 | 247,075,189 | 6,760,009 | 6,863,517 | 123,600,000 | Min. | 1,348,660 | 1,076,308 | 464,658 | 25,754,603 | 496,984 | 1,083,685 | 17,230,000 | SD | 3,487,096 | 3,030,281 | 1,474,398 | 66,920,036 | 1,842,257 | 1,865,051 | 31,440,075 |
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