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How Boulder Dam will refinance Colorado River Project : statement to Congressional Colorado River Commission regarding present and probable future power demands, power supply and cost per K.W.H. for Southern California
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http://digital.library.unlv.edu/u?/dig,8
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assumed that Boulder Canyon power would have to be sold at a price equal to the saving in fuel only. However, the measure of this conflict with steam plant output, which may have been provided for regular operation like hydro-electric plants are provided, is the little area, "Replacing Steam," shown on the chart and which may be very materially reduced, if not eliminated, as stated. The chart shows the actual to date, and the estimated for the future, total production in average kilowatt load as compiled in Table 5 of this report, and assumes that from the present time the power demand will be supplied from hydro-electric, shown as indicated. Should a greater amount of this be provided by steam and less by hydro, the problem of the absorption of the Boulder Canyon power would not be altered in any respect. The extent of steam standby capacity heretofore provided and which will be provided in the future, in excess of the amount of steam plant capacity actually used to carry load, is not shown on this chart, but could be plotted on the chart by use of the data on sheets 6-b, 6-c, 6-d and 6-e, entitled "Electric Horsepower Installed in California," if desired, and thus show the amount of standby which has been available from time to time. The chart contemplates that the first of the ten 100,000 horsepower units at Boulder Canyon would be put in operation July 1, 1934, and that the remaining units would follow as indicated. Should the data of availability of the first installment of Boulder Canyon power be later, the problem of its absorption would be less difficult rather than greater. From the tables of installed electric horsepower for Northern and Southern California just referred to, it will be noted that during the past four to six years an average of 175,000 horsepower of installed capacity has been added each year. It is also interesting to note the actual experience of certain large California utilities in comparison with Boulder Canyon. In 1921, the Great Western Power Company of California with an average output of 55,500 kilowatts brought in its Caribou development with potential output of 25,000 kilowatts average, or 44 per cent of the existing load. In 1925, the Pacific Gas and Electric Company with an average load of 223,000 kilowatts completed its Pit No. 1 Plant with an estimated average output of 41,000 kilowatts, commenced the purchasing of power from the City of San Francisco of its Hetch Hetchy Plant output of 53,000 kilowatts and also commenced the purchase under contract from the California-Oregon Power Company of at least 8500 average kilowatts. This in total also represented an added hydro-electric supply of 44 per cent of its then existing load in one year. Compared with these percentages, the total output of Boulder Canyon would be, when fully complete, 43.1 per cent of the total power produced in the tributary California market at the time of bringing in this project, if completed by 1934. This is an approximately equal percentage with that readily absorbed by existing hydro-electric companies in California. It would be natural to assume that the first installment of power will become available somewhat prior to the full completion of the dam, and that the power plant capacity will be constructed in installments so as to become available somewhat as indicated in the Ready-Butler Report, with such modification as experience may dictate. Comparison Between Costs of Boulder Canyon Power With Steam Auxiliary; a Substitute Steam Electric Supply and Other Sources The accompanying tabulation, "Cost of Boulder Canyon Power with Peak Steam Service and Standby," together with the explanatory sheet giving detailed analysis of certain items contained in the tabulation, show the cost of a power supply delivered in Los Angeles for meeting a demand of 664,000 kilowatts, at 55 per cent load factor and a power factor between 75 per cent and 80 per cent from the proposed Boulder Canyon project in conjunction with the necessary steam standby and steam plant capacity for carrying a limited amount of peak, such as to provide through the combination a reliable and the TABLE NO. 4 Estimated Growth in Electric Power Requirements for the City of Los Angeles. October, 1928 _________________________________________________________________________________________________________________________________________ Year- Population | K. W. Hrs. per Yr. | Average Load | Load | Peak Load | K.W. Hrs. per Yr. | K.W. Hrs. per Yr. | K.W. hrs. Per | including |______________| Factor |_____________| Rails | Excluding | Capita per yr. | Rails | K.W. H.P. | Per Cent | K.W. H.P. | Only | Rails | Excluding | | | | | | | Rails __________________________________________________________________________________________________________________________________________ 1914 448,000 253,324,893 28,900 38,800 38.7 74,700 100,300 138,968,100 114,356,793 255 1915 485,000 271,772,817 30,950 41,500 39.0 79,300 106,500 140,161,000 131,611,817 271 1916 528,000 290,213,457 33,100 44,300 40.1 82,600 110,500 144,666,500 145,546,957 276 1917 572,000 318,247,183 36,300 48,700 42.2 86,000 115,500 150,036,100 168,211,083 294 1918 619,000 353,605,385 40,250 53,900 41.8 96,100 129,000 153,321,800 200,283,585 324 3919 678,000 382,945,086 43,700 58,600 44.3 98,500 132,000 143,487,400 239,457,686 353 1920 716,000 462,143,362 52,750 70,800 46.0 114,600 154,000 162,787,860 299,355,502 418 1921 780,000 511,791,921 58,500 79,400 45.2 129,500 175,700 158,765,250 353,026,671 453 1922 840,000 582,211,417 66,500 89,100 42.2 157,500 211,000 168,143,750 414,067,667 493 1923 904,000 713,711,658 81,500 109,300 41.8 195,000 261,000 185,184,015 528,527,643 585 1924 975,000 765,797,804 87,500 117,300 42.1 207,500 278,000 180,251,405 585,546,399 600 1925 1,053,000 846,030,726 96,500 129,500 42.5 227,500 304,000 189,525,135 656,505,591 623 1926 1,133,000 939,564,546 107,000 143,300 41.1 259,000 347,000 205,029,359 734,535,187 647 1927 1,212,000 1,060,640,628 121,000 162,000 42.9 282,000 377,000 213,755,000 846,885,628 698 _________________________________________________________________________________________________________________________________________ 1928 1,296,000 1,170,560,000 133,500 179,000 43.2 309,000 415,000 218,000,000 952,560,000 735 1929 1,378,000 1,290,816,000 147.000 197,000 44.0 334,000 447,000 227,000,000 1,063,816,000 772 1930 1,460,000 1,417,600,000 161,500 216,500 44.3 364,000 487,000 235,000,000 1,182,600,000 810 1931 1,545,000 1,558,250,000 177,500 238,000 44.8 396,000 530,000 243,000,000 1,315,250,000 850 1932 1,633,000 1,701,104,000 194,000 260,000 45.3 428,000 573,000 251,000,000 1,450,104,000 888 1933 1,720,000 1,856,160,000 212,000 284,000 45.9 461,000 618,000 260,000,000 1,596,160,000 928 1934 1,803,000 2,027,728,000 231,000 310,000 46.4 497,000 668,000 268,000,000 1,759,728,000 976 1935 1,895,000 2,180,475,000 248,500 333,000 46.9 530,000 710,000 276,000,000 1,904,475,000 1005 1936 1,983,000 2,352,269,000 268,500 360,000 47.4 566,000 760,000 284,000,000 2,068,269,000 1043 1937 2,075,000 2,533,000,000 289,000 388,000 47.8 603,000 811,000 292,000,000 2,241,000,000 1080 1938 2,172,000 2,732,640,000 312,000 418,000 48.2 647,000 867,000 300,000,000 2,432,640,000 1120 1939 2,267,000 2,937,920,000 335,000 449,000 48.7 688,000 923,000 308,000,000 2,629,920,000 1160 1940 2,363,000 3,151,600,000 360,000 482,000 49.6 725,000 972,000 316,000,000 2,835,600,000 1200 ========================================================================================================================================= TABLE NO. 5 Estimated Growth in Electric Power Requirements for Southern California. October, 1928 _________________________________________________________________________________________________________________________________________ Year- | Population | K. W. Hrs. per Yr. | Average Load | Load | Peak Load | K.W. Hrs. per Yr. | K.W. Hrs. per Yr. | K.W. hrs. Per | including |______________| Factor |_____________| Rails | Excluding | Capita per yr. | Rails | K.W. H.P. | Per Cent | K.W. H.P.| Only | Rails | Excluding | | | | | | | Rails _________________________________________________________________________________________________________________________________________ 1914 1,370,797 929,608,696 106,000 142,000 41.5 256,000 343,000 268,921,700 660,683,996 480 1915 1,412,467 952,366,956 108,000 144,600 42.0 259,000 347,000 270,347,000 682,019,956 482 1916 1,298,760 956,460,635 109,000 146,000 42.5 256,000 343,000 275,060,500 681,400,135 524 1917 1,325,146 1,111,652,639 126,000 168,700 43.0 295,000 396,000 286,535,700 825,116,939 622 1918 1,434,713 1,279,870,197 146,000 195,500 43.5 336,000 450,000 294,476,600 985,393,597 687 1919 1,490,288 1,470,835,118 167,800 224,500 44.0 358,000 480,000 275,258,500 1,195,576,618 802 1920 1,681,175 1,712,976,055 195,300 261,500 44.5 439,000 588,000 302,564,900 1,410,411,155 836 1921 1,895,802 1,990,675,270 227,500 305,000 45.0 506,000 678,000 294,734,842 1,695,940,428 895 1922 2,037,618 2,173,203,669 248,000 332,000 45.5 545,000 731,000 309,446,719 1,863,756,950 915 1923 2,195,444 2,622,442,920 299,500 401,000 46.0 651,000 872,000 347,517,190 2,274,925,730 1036 1924 2,368,800 2,822,618,200 322,100 432,000 46.5 693,000 930,000 333,794,778 2,488,823,422 1050 1925 2,542,191 3,201,182,451 365,500 489,000 47.0 777,000 1,040,000 326,891,166 2,874,291,285 1130 1926 2,603,091 3,542,304,092 404,500 542,000 47.5 852,000 1,142,000 336,100,574 3,206,203,518 1232 1927 2,679,552 3,961,261,394 452,500 606,000 48.0 944,000 1,265,000 340,423,354 3,620,838,040 1350 __________________________________________________________________________________________________________________________________________ 1928 2,720,000 4,103,600,000 468,000 628,000 48.5 968,000 1,297,000 350,000,000 3,753,600,000 1380 1929 2,910,000 4,576,500,000 521,000 698,000 49.0 1,062,000 1,423,000 357,000,000 4,219,500,000 1450 1930 3,100,000 5,089,500,000 581,000 779,000 49.5 1,171,000 1,570,000 362,000,000 4,727,500,000 1525 1931 3,300,000 5,647,000,000 645,000 865,000 50.0 1,290,000 1,730,000 367,000,000 5,280,000,000 1600 1932 3,510,000 6,217,150,000 709,000 950,000 50.5 1,402,000 1,879,000 373,000,000 5,844,150,000 1665 1933 3,710,000 6,815,850,000 778,000 1,043,000 51.0 1,525,000 2,045,000 379,000,000 6,436,850,000 1735 1934 3,910,000 7,423,000,000 848,000 1,137,000 51.5 1,645,000 2,205,000 385,000,000 7,038,000,000 1800 1935 4,120,000 8,095,400,000 924,000 1,240,000 52.0 1,775,000 2,380,000 391,000,000 7,704,400,000 1870 1936 4,340,000 8,816,600,000 1,005,000 1,345,000 52.5 1,910,000 2,560,000 397,000,000 8,419,600,000 1940 1937 4,570,000 9,588,700,000 1,095,000 1,467,000 53.0 2,065,000 2,770,000 403,000,000 9,185,700,000 2010 1938 4,800,000 10,393,000,000 1,185,000 1,585,000 53.5 2,220,000 2,975,000 409,000,000 9,984,000,000 2080 1939 5,020,000 11,207,000,000 1,280,000 1,715,000 54.0 2,370,000 3,175,000 414,000,000 10,793,000,000 2150 1940 5,250,000 12,082,000,000 1,379,000 1,847,000 54.5 2,530,000 3,390,000 427,000,000 11,655,000,000 2220 ========================================================================================================================================= Page 4

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