Montana. Dept. of Environmental Quality.
Understanding electricity in Montana : a guide to electricity, natural gas and coal produced and consumed in Montana (Volume 2002) online
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1977
48,181
46,819
0.719
33,663
1978
48,497
46.522
0.847
39,404
1979
56,094
53.888
1.211
65,258
1980
53,802
51.867
1.454
75,415
1981
58,502
56.565
1.909
107,983
1982
58.184
56,517
2.145
121,229
1983
53,516
51,967
2.410
125,240
1984
52,930
51,474
2.460
126,626
1985
54,151
52.494
2.390
125,461
1986
48.246
46.592
2.050
95,514
1987
47.845
46.456
1.800
83,621
1988
53.014
51,654
1.700
87,812
1989
52,583
51,307
1.550
79,526
1990
51,537
50.429
1.790
90,268
1991
53,003
51.999
1.660
86,318
1992
54,810
53.867
1.620
87,265
1993
55.517
54.528
1.550
84,518
1994
51.072
50,416
1.460
73,607
1995
50.763
50,264
1.360
68,359
1996
51.668
50,996
1.410
71,904
1997
53.621
52,437
1.590
83,375
1998
59.506
57,645
1.530
88,197
1999
61.545
61,163
1.680
102,754
Gross Withdrawal includes marketed production, plus quantities used in re-pressuring. plus quantities vented and llared Irom both gas and oil wells.
Marketed Production represents gross withdrawals of natural gas from gas and oil wells minus gas used for repressuring. nonhydrocarbon gases removed,
and quantities vented and flared. For 1979 and prior years, the volumes of nonhydrocarbon gases included in marketed production were not reported. For
1980 and 1981 , the amount of nonhydrocarbon gases removed was not available for the (Montana data, so the Department of Energy used the same figure for
Ivlontana's marketed production including nonhydrocarbon gases as is used for marketed production excluding nonhydrocarbon gases.
Average wellhead price is computed by dividing the gross value of the gas produced by the respective volume produced.
Sources: US. Department of Interior. Bureau of ti/lines. Mineral Industry, Natural Gas Production and Consumption Annual Report. 1950-75. U.S.
Department of Energy. Energy Information Administration. Natural Gas Production and Consumption Annual Report , 1976-79 (EIA-0131). U.S. Department of
Energy. Energy Information Administration. Natural Gas /Innua/, 1980-99 (EIA-0131).
III-15
Table NG2. Natural Gas Consumption by Customer Class, 1950-2000 (million cubic feet)
Year
Residential
Commercial'^
Industrial"
Utilities
Consumption
1950
12,596
7,536
13.979
892
38,333
1951
12,287
7,379
15.047
884
37,276
1952
12,263
7,794
17,422
998
41,545
1953
12.029
7,544
16,559
1,237
40,953
1954
13.314
8,277
14,909
601
41,002
1955
15.335
9,427
18,240
630
47,861
1956
15.235
9,314
18,226
876
48,305
1957
16,725
10,116
18,429
2,954
54,868
1958
14,970
9,546
18,960
3,183
54,725
1959
17,310
11,124
16.438
1,005
51,898
1960
16,825
11,820
19,558
339
54,271
1961
17,086
12,140
21,404
354
57,465
1962
17.078
12,302
21,713
3,692
62,952
1963
17,274
12.569
24.613
3,285
66,969
1964
18,792
13,059
26.419
2,437
67,282
1965
19,908
14,110
28,310
1 ,992
70,895
1966
19,690
14,068
29,571
2,977
73,829
1967
19,756
15,516
22,584
502
65,782
1968
19,711
13,651
23,155
631
63,642
1969
21,463
16,593
31,917
1,520
78,988
1970
24,794
18,564
36,105
2,529
90,823
1971
25,379
18,109
36,800
1,075
89,021
1972
23,787
19,151
33,192
1,218
85.161
1973
24,923
19,143
37,898
2,322
91,148
1974
21,590
16,602
35,202
1,111
80,766
1975
24,097
18,654
31,631
1,059
80,351
1976
23,525
17,831
31,049
709
78,094
1977
21,596
16,706
27,260
953
70,956
1978
22,944
17,766
26,686
909
72,649
1979
22,579
17,396
20,411
2.320
69,805
1980
19,296
14,265
16,717
4,182
60,724
1981
17.245
13,725
15,494
2,069
52,452
1982
19.989
15,987
11,574
337
52,208
1983
16,967
13,534
11,798
335
46,249
1984
18,443
14,256
9.855
360
46,864
1985
19,371
14,820
8,220
468
47,265
1986
16,822
12,536
7,507
407
41,148
1987
15,359
10,989
7,861
478
38,786
1988
16,900
12,041
8,360
286
41,825
1989
18,195
13,141
9,903
336
45,756
1990
16,850
12,164
9,424
418
43,169
1991
18,413
12,848
9,873
268
45,402
1992
16,673
11,559
12.218
220
45,561
1993
20,360
13,884
12,690
270
53,298
1994
18,714
12,987
13,940
632
52,058
1995
19,640
13,497
18,135
388
57,827
1996
22,175
14,836
18,103
470
61,399
1997
21,002
13,927
18,766
420
59,827
1998
19,172
12,961
21,416
522
59,817
1999
19,676
12,095
23,036
289
62,093
2000
19593
13,298
23,195
NA
66,542
NA: Not available due to problems with data reporting under utility deregulation.
Other consumers, including deliveries to municipalities and public authorities for institutional heating, street lighting, etc.. were
included in the industrial category prior to 1967. From 1967 on, other consumers were included in the Commercial category.
' Beginning with 1990 data. Commercial volumes include natural gas delivered for vehicular fuel use.
Industrial use includes refinery use of gas, but excludes pipeline fuel.
' Total Consumption includes total gas delivered to consumers, plus lease and plant fuel, plus pipeline fuel.
Sources: U.S. Depanment of Interior, Bureau of Mines. Mineral Industry Surveys, Natural Gas Production and Consumption , annual reports for
1950-75; U.S. Department of Energy. Energy Information Administration. Natural Gas Production and Consumption . annual reports for 1976-79
(EIA-0131); us. Department of Energy, Energy Information Administration, Natural Gas Annual , annual reports for 1980-99 (EIA-0131); U.S.
Department of Energy. Energy Information Administration, Natural Gas Monthly. Sept. 2001 and Feb. 2002.
III-16
Table NG3. Average Natural Gas Prices by Customer Class, 1950-2000
Price by Customer Class (doll
ars per thousand cubic feet)
Year
Residential
Commercial
Industrial
All Customers^
1950
0.473
0.328
0.142
0.301
1951
0.510
0.351
0.160
0.320
1952
0.507
0.352
0.192
0.324
1953
0.531
0.368
0.194
0.337
1954
0.589
0.415
0.201
0.388
1955
0.583
0.411
0.202
0.380
1956
0.585
0.412
0.206
0.382
1957
0.583
0.413
0.208
0.380
1958
0.647
0.443
0.218
0.401
1959
0.647
0.457
0.267
0.456
1960
0.660
0.464
0.274
0.454
1961
0.655
0.459
0.257
0.438
1962
0.752
0.506
0.251
0.464
1963
0.746
0.507
0.268
0.462
1964
0.763
0.533
0.303
0.495
1965
0.781
0.541
0.311
0.506
1966
0.779
0.543
0.304
0.495
1967
0.796
0.571
0.341
0.546
1968
0.822
0.603
0.326
0.554
1969
0.882
0.643
0.338
0.562
1970
0.907
0.659
0.339
0.572
1971
934
0.685
0.357
0.603
1972
0.965
0.691
0.381
0.630
1973
1.086
0.804
0.425
0.698
1974
1.119
0.926
0.580
0.804
1975
1.296
1.101
0.949
1.089
1976
1.364
1.187
0.930
1.164
1977
1.816
1.584
1.558
1.641
1978
1.894
1.646
1.642
1.720
1979
2.213
2.002
1.749
2.004
1980
3.053
3.117
3.143
3.182
1981
3.754
4.138
4.258
4.057
1982
4.460
4.874
5.488
4.829
1983
4 627
5.065
3.990
4.561
1984
4.861
5.242
5.173
5.025
1985
4.813
5.094
4.706
4.845
1986
4.446
4.476
3.913
4.312
1987
4.410
4.340
3.420
4.160
1988
4.300
4.300
3.080
4.040
1989
4.370
4.360
2 980
4.080
1990
4.590
4.640
3.270
4.260
1991
4.520
4.350
3.220
4.160
1992
4.800
4.460
4.190
4.510
1993
4.920
4.670
2.760
4.250
1994
5.230
4.910
4.910
4.990
1995
5.150
4.920
4.870
4.980
1996
4.860
4.640
4.880
4.790
1997
5.050
4.830
4.790
4.900
1998
5.250
5.130
4.680
4.960
1999
5.160
5.130
3.440
4.420
2000
5.930
5.860
4.290
5.240
1 Average prices were computed by dividing the annual value of natural gas consumed by a customer class by the respective annual
volume of natural gas consumed.
The All Customers category includes all the consumers in Table NG2.
Sources: U.S. Department of the Interior, Bureau of Mines, Mineral Industry Surveys, Natural Gas Production and Consumption . annual
reports for 1 950-75; U.S. Department of Energy, Energy Information Administration, Natural Gas Production and Consumption , annual
reports for 1976-79 (EIA-0131): U.S. Department of Energy, Energy Information Administration, Natural Gas Annual, annual reports for
1980-1999 {EIA-0131); U.S. Department of Energy, Energy Information Administration, Natural Gas Monthly, Sept. 2001 (EIA-0131).
III-17
Table NG4. Average Natural Gas Consumption and Annual Cost per
Consumer. 1980-1999^
Residential
Commercial
Industrial^
Average
Average
Average
Average
Average
Consumption
Annual
Consumption
Annual
Consumption
Annual
Year
(Mcf)
Cost
(dollars)
(Mcf)
Cost
(dollars)
(Mcf)
Cost
(dollars)
1980
117
356
670
2,089
32,841
103218
1981
104
389
610
2,523
31.364
133,551
1982
121
538
780
3,800
24,013
131,770
1983
102
470
651
3,298
25,048
99,956
1984
110
534
679
3,558
21,013
108,703
1985
115
555
706
3,595
17,908
84,267
1986
100
445
597
2,672
16,869
66.006
1987
91
404
514
2,231
18.072
61,806 E
1988
98
423
541
2,329
19.219
59.195 E
1989
106
464
591
2,579
23,138
68,951 E
1990
97
444
521
2,419
20,622
67,434 E
1991
104
468
554
2,411
21,842
70,331 E
1992
91
439
490
2,185
26.620
-
1993
108
-
569
-
27,469
-
1994
96
~
512
-
30,773
-
1995
96
-
512
-
39.168
-
1996
108
~
562
-
38.848
-
1997
100
-
507
-
40,619
—
1998
88
~
462
-
47,172
-
1999
-
-
425
-
58,025
-
Estimate
' Starting in 1993, figures were no longer given for average cost. Starting in 1999, residential average
consumption was no longer given.
^ Beginning in 1987, industrial costs per consumer are estimated by DEQ using Department of Energy
average prices of deliveries to industrial customers times industrial consumption volumes. The
Department of Energy did not calculate these numbers in national statistics because values associated
with gas delivered for the account of others are not always available. However, those values are not
considered to be significant in Montana.
Source: United States Department of Energy, Energy Information Administration, Natural Gas
Annual, annual reports for 1980-99 (ElA-0131).
III-18
Table NG5. Regulated Sales^ of Natural Gas by Gas Utilities,* 1950-2000 (million cubic feet)
Note: The gas sales numbers in this table are significantly lower than the total gas consumption numbers in Table NG2 tor several reasons. First,
these sales data are taken from annual reports filed by utilities to the Montana Public Service Commission The way utilities report gas sales to the
PSC IS drfterent from the way in which Table NG2 total consumption numbers are calculated by the U.S. Energy Information Administration. Also,
much of Industrial consumption since 1991 is not reported in this table due to different reporting requirements and processes used by utilities since
deregulation. These include the practice of not reporting gas used for pipeline transportation. This table does not include gas sales sold to other
utilities for resale in Montana, lease and plant fuel, pipeline fuel, or fuel used by utilities
MONTANA POWER COMPANY'
MONTANA-DAKOTA UTILITIES'
Residential
% of Total
Residential
% of Total
Year
and
Commercia
Industrial
Other
Total
Montana
Sales
and
Commercial
Industrial
Other
Total
Montana
Sales
1950
7,909
8,852
NA
16.761
54 2"i
4,228
240
469
4.937
16.0%
1951
8,076
12,970
NA
21.046
59 3%
5,514
1,180
499
7.193
20.3%
1952
8.435
13.760
NA
22.195
62.0%
7,340
1,845
468
9,653
25 9%
1953
8,229
13.624
NA
21.853
61.9%
7.223
1,863
480
9,566
27.1%
1954
8,737
12,225
NA
20.962
59-3%
7,912
1,649
495
10,056
284%
1955
11,231
15,511
NA
26,742
63 9%
7,594
1,996
533
10,123
24.2%
1956
11,100
15,584
NA
26,684
63 4°1
7,708
2,212
509
10,429
24.8%
1957
12,584
15.527
NA
28,111
64 4';i
7.797
2,056
492
10,345
237%
1958
12,391
15.173
NA
27,564
62 7%
7.429
3,233
551
11,213
25 5%
1959
14.401
12.629
NA
27,030
596%
8.678
2,934
507
12,119
26 7%
1960
14,533
15.462
NA
29,995
62,3%
8.516
3,148
342
12,006
25.0%
1961
14.517
16.654
NA
31,171
62,7%
8,689
3,606
177
12,472
25.1%
1962
15.133
18.080
NA
33.213
64 1%
9,148
3,051
103
12,302
237%
1963
14.893
19.666
NA
34.559
64.6%
8.826
3,862
79
12,767
23,9%
1964
16,853
20,958
NA
37.811
64.1%
9.620
4,587
55
14,362
24 4%
1965
17,977
22,195
NA
40,172
63.9%
10.955
4,430
61
15,446
24 6%
1966
17,731
23.058
NA
40,789
65 2%
10.414
4,256
55
14,725
23.5%
1967
18.027
20.766
NA
38,793
645'^'.
10.584
3,813
67
14,464
24,0%
1968
19,063
21.650
NA
40.713
646%
10.847
4,523
65
15,435
24.5%
1969
19,891
25.536
NA
45.427
64,2%
11.534
6,277
55
17,866
253%
1970
20,398
26,006
NA
46,404
62 9%
11,499
8,582
102
20,183
27 3%
1971
18,956
25.581
1,628
46,165
62.9%
11,612
8,317
139
20,068
27 3%
1972
20.068
26.128
1,491
47.687
62.4%
12,352
8,218
600
21,170
27,7%
1973
19.771
25.915
1,578
47.264
62 3°'o
11.525
8,685
1,415
21,623
28 5%
1974
18.931
26,301
1,408
46.640
63 4%
11.230
6,455
588
20.273
27 6%
1975
20,762
24,130
1.523
46.415
62.5%
12.779
7,774
NA
20.553
27.7%
1976
18,795
20.663
1.405
40.863
61.0%
12,208
7,100
NA
19.307
28 8%
1977
18,413
18.101
1,451
37.965
61 4"^,
11,898
5,923
NA
17.821
28 8%
1978
18,696
17,280
1,498
37.475
60.5%
13.784
3,981
NA
17,765
28.7%
1979
19,142
16,118
2,737
37.997
620%
13.500
3,480
NA
16,981
27 7%
1980
17,091
12,655
4.986
34,733
62.9%
11.332
3,627
NA
14,959
27 1%
1981
15,216
9,758
2.754
27,727
57.8%
10,312
5,307
NA
15,618
32 6%
1982
17,032
7,064
1,317
25.413
54.6%
12,228
4,148
60
16.436
35.3%
1983
14,606
6,829
1.152
22.587
54 8%
10.181
3,774
32
13.987
34 0%
1984
16.075
5 967
1.238
23.280
563%
10.744
2,451
59
13.254
32,1%
1985
16,916
6.043
1.271
24,230
58 3%
11.094
1,336
19
12,449
29.9%
1986
14,461
5,208
1.099
20,768
58 6%
9.191
607
15
9,813
27 7%
1987
14,090
5.358
748
20,196
62.6%
7.712
254
15
7,981
24,7%
1988
15,027
6.652
732
22,410
63 2%
8,285
475
17
8.776
24 8%
1989
16,771
7,050
771
24,592
64.0%
9.069
161
17
9,247
24 1%
1990
15,915
6.057
744
22,715
64.5%
8.192
54
17
8.262
235%
1991
16,522
4.980
683
22,185
62.2%
9.074
12
11
9,096
25 5%
1992
18,541
672
221
19,534
60,4%
8,290
4
13
8,307
25.7%
1993
21,216
756
1481
23.453
60 4%
9.927
12
8
9,947
256%
1994
19,680
603
499
20.782
59 5%
9.258
3
10
9,271
26 5%
1995
20,900
616
517
22,033
60 8%
9.345
NA
NA
9,345
25,8%
1996
23,414
681
599
24.694
61.1%
10,891
NA
NA
10,891
26.9%
1997
22.465
619
488
23,572
60,4%
10,148
NA
NA
10,148
26 0%
1998
19,298
309
294
19.901
58.4%
8.906
NA
NA
8,906
26 1%
1999
18,277
281
244
18.802
57 8%
8.906
NA
NA
8,906
27 4%
2000
18,382
211
282
18.875
58,1%
9,301
NA
NA
9301
28.6%
III-19
Table NG5. (continued)
GREAT FALLS GAS COMPANY/ ENERGY WEST*
OTHER UTILITIES'
TOTAL SALES'
Residential
% o( Total
Total for all
Sectors
% of Total
Residential
Year
and
Industrial
Other
Total
Montana
Montana
and
Industrial
Other
TOTAL
Commercial
Sales
Sales
Commercial
1950
2,509
208
53
2.770
9.0°'o
6.481
20 9<'.4
21,127
9.300
522
30.949
1951
2.697
311
191
3.199
90%
4.055
1 1 .4%
20.342
14.461
690
35,493
1952
2.566
228
333
3.127
87%
852
2.4%
19.193
15.833
801
35,827
1953
2.478
238
350
3.066
8.7%
814
2,3%
18.744
15,725
830
35,299
1954
2.795
255
400
3.450
9.8%
892
2.5%
20.336
14,129
895
35,360
1955
3.284
243
434
3.961
9.5%
1,049
2.5%
23.158
17.750
967
41,875
1956
3.361
204
396
3.961
9.4%
1,019
2.4%
23.188
18,000
905
42,093
1957
3,510
258
451
4.219
9.7%
955
2 2%
24.846
17,841
943
43,630
1958
3.365
268
475
4,108
9.3%
1.067
2.4%
24.252
18,674
1.026
43.952
1959
4.048
388
566
5.002
1 1 0%
1.175
26%
28.302
15,951
1,073
45.326
1960
3.928
512
516
4,956
10.3%
1,152
2.4%
28,129
19.122
858
48.109
1961
4.067
380
606
5,053
10.2%
1,045
2.1%
28,318
20,640
763
49,741
1962
4.092
371
752
5,215
101%
1,078
2.1%
29.451
21,502
855
51.808
1963
4.030
396
793
5.219
9.8%
945
1.8%
28.694
23.924
872
53,490
1964
4.446
480
847
5.773
9.8%
1,018
1.7%
31.937
26.125
902
58,964
1965
4,767
499
868
6.134
9.8%
1,160
laro
34.859
27.124
929
62,912
1966
4.593
490
846
5.929
9.5%
1,125
18%
33.863
27,804
901
62,568
1967
4.505
397
856
5.758
9.6%
1,160
1.9%
34,276
24.976
923
60175
1968
4.504
424
852
5.780
9.2%
1,074
17%
35.488
26.597
917
63.002
1969
5,042
412
891
6,345
9,0%
1,118
16%
37,585
32.225
946
70.756
1970
4,926
378
902
6.206
8.4%
1,010
1 4°.i
37,833
34.966
1,004
73,803
1971
4.901
367
895
6.163
8.4%
1.048
1 4%
36,517
34,265
2,662
73,444
1972
5.185
353
884
6,422
8.4%
1,105
1 4°i
38,710
34,699
2,975
76,384
1973
4.729
414
864
6,007
7.9%
982
1,3%
37,007
35,014
3.857
75.876
1974
4.504
412
807
5,723
7 8%
936
13%
35,601
35,168
2,803
73,572
1975
5.145
354
845
6,344
8.5%
1.000
1.3%
39.686
.1?,?58
2,368
74,312
1976
4.875
237
892
6,004
9.0%
762
1.1%
36.640
28.000
2,297
66,935
1977
4.317
246
734
5.297
8.6%
715
1.2%
35.343
24.270
2,185
61,798
1978
4.818
196
826
5.840
9.4%
824
1 3%
38.122
21.457
2,324
61.904
1979
4.512
249
750
5.512
9.0%
804
1 3%
37.958
19.847
3,487
61.294
1980
3.888
266
689
4.842
8.8%
669
1.2%
32,980
16.548
5,675
55,203
1981
3.257
169
619
4,044
8,4%
573
1.2%
29,358
15.234
3,373
47,962
1982
3.289
188
627
4.104
88%
596
1.3%
33,145
11.460
1,944
46,549
1983
3.320
206
636
4.162
101%
446
1,1%
28.553
10.809
1,820
41.182
1984
3.531
256
530
4.317
10.4%
487
1.2%
30.837
8,674
1,827
41,338
1985
3.719
181
536
4.436
10.7%
474
1.1%
32.203
7,560
1,826
41,589
1986
3,538
285
592
4.415
12:5%
465
1.3%
27.655
6.100
1,706
35,461
1987
3064
193
442
3.699
11.5%
388
12%
25.254
5.805
1,205
32,264
1988
3.189
170
499
3.858
10.9%
386
1,1%
26.887
7.296
1,247
35,431
1989
3.567
160
411
4.138
10 8%
427
1.1%
29.834
7.371
1,199
38,404
1990
3,381
78
401
3.860
11.0%
392
1.1%
27.879
6.169
1,162
35,230
1991
3,435
164
389
3.988
11.2%
400
1.1%
29.430
5.156
1,083
35,669
1992
4.139
NA
4,139
12.8%
373
1.2%
31,443
676
234
32,353
1993
4.478
490
4,968
12.8%
432
1.1%
36.053
768
1.979
38,800
1994
3.971
478
4.449
12.7%
443
13%
33.352
606
987
34,945
1995
3.942
464
4.406
12.2%
447
1.2%
34,634
616
981
36,231
1996
4.362
NA
4.362
108%
498
1.2%
39,165
681
599
40,445
1997
4,496
314
4,810
12.3%
504
1.3%
37,613
619
802
39,034
1998
3.535
1331
4.866
14.3%
418
1.2%
32,157
309
1.625
34,091
1999
3.401
996
4.397
13.5%
427
1,3%
31.011
281
1.240
32,532
2000
3.058
1009
4,067
12.5%
239
0.7%
30.980
211
1,291
32,482
NA
Not Available
See notes on Idlowing page.
III-20
Table NG5. (continued)
' Sales to other utilities for resale and sales of natural gas to Canada are not included.
^ From 1950 to 1970. government and municipal sales were reported in the "Residential and Commercial" sector.
"Other" includes interdepartmental use, sales to government and municipal authorities tor heating, and special off-line sales
to fimis in f^lontana where these figures are reported separately.
The following 3 lines from Fran Balkovetz at MPC:
III iw I 1^ wiieii iviri., s oa:> uiiiiiy bidiieu ueieyuidiiiiy iib t;ubiLnnei>>. hih a lesuit. iiieie iieive ueeri uiiaiiyeb in iimabuieu b(iitf:> nicuiuuuiuyy iiuni
1991 until present. This created differences after 1991 in how MPC's data is reported and is part of the reason why the numbers in the "industnal'
column decrease so sharply in 1992. It is very hard to reconcile these differences and thus the 1990's numbers are given as presented in Schedule
In 1992, some customers in the industnal' category left MPC as a result of deregulation
In 1992 and 1993. Schedule 35 was not reported like m later years. In 1992. figures used are from Actual Billed Volumes supplied by Fran
Balkovetz at MPC
* Prior to 1975 "Other" includes interdepartmental use and natural gas used in MDU's electnc generating plants at Baker.
48,181
46,819
0.719
33,663
1978
48,497
46.522
0.847
39,404
1979
56,094
53.888
1.211
65,258
1980
53,802
51.867
1.454
75,415
1981
58,502
56.565
1.909
107,983
1982
58.184
56,517
2.145
121,229
1983
53,516
51,967
2.410
125,240
1984
52,930
51,474
2.460
126,626
1985
54,151
52.494
2.390
125,461
1986
48.246
46.592
2.050
95,514
1987
47.845
46.456
1.800
83,621
1988
53.014
51,654
1.700
87,812
1989
52,583
51,307
1.550
79,526
1990
51,537
50.429
1.790
90,268
1991
53,003
51.999
1.660
86,318
1992
54,810
53.867
1.620
87,265
1993
55.517
54.528
1.550
84,518
1994
51.072
50,416
1.460
73,607
1995
50.763
50,264
1.360
68,359
1996
51.668
50,996
1.410
71,904
1997
53.621
52,437
1.590
83,375
1998
59.506
57,645
1.530
88,197
1999
61.545
61,163
1.680
102,754
Gross Withdrawal includes marketed production, plus quantities used in re-pressuring. plus quantities vented and llared Irom both gas and oil wells.
Marketed Production represents gross withdrawals of natural gas from gas and oil wells minus gas used for repressuring. nonhydrocarbon gases removed,
and quantities vented and flared. For 1979 and prior years, the volumes of nonhydrocarbon gases included in marketed production were not reported. For
1980 and 1981 , the amount of nonhydrocarbon gases removed was not available for the (Montana data, so the Department of Energy used the same figure for
Ivlontana's marketed production including nonhydrocarbon gases as is used for marketed production excluding nonhydrocarbon gases.
Average wellhead price is computed by dividing the gross value of the gas produced by the respective volume produced.
Sources: US. Department of Interior. Bureau of ti/lines. Mineral Industry, Natural Gas Production and Consumption Annual Report. 1950-75. U.S.
Department of Energy. Energy Information Administration. Natural Gas Production and Consumption Annual Report , 1976-79 (EIA-0131). U.S. Department of
Energy. Energy Information Administration. Natural Gas /Innua/, 1980-99 (EIA-0131).
III-15
Table NG2. Natural Gas Consumption by Customer Class, 1950-2000 (million cubic feet)
Year
Residential
Commercial'^
Industrial"
Utilities
Consumption
1950
12,596
7,536
13.979
892
38,333
1951
12,287
7,379
15.047
884
37,276
1952
12,263
7,794
17,422
998
41,545
1953
12.029
7,544
16,559
1,237
40,953
1954
13.314
8,277
14,909
601
41,002
1955
15.335
9,427
18,240
630
47,861
1956
15.235
9,314
18,226
876
48,305
1957
16,725
10,116
18,429
2,954
54,868
1958
14,970
9,546
18,960
3,183
54,725
1959
17,310
11,124
16.438
1,005
51,898
1960
16,825
11,820
19,558
339
54,271
1961
17,086
12,140
21,404
354
57,465
1962
17.078
12,302
21,713
3,692
62,952
1963
17,274
12.569
24.613
3,285
66,969
1964
18,792
13,059
26.419
2,437
67,282
1965
19,908
14,110
28,310
1 ,992
70,895
1966
19,690
14,068
29,571
2,977
73,829
1967
19,756
15,516
22,584
502
65,782
1968
19,711
13,651
23,155
631
63,642
1969
21,463
16,593
31,917
1,520
78,988
1970
24,794
18,564
36,105
2,529
90,823
1971
25,379
18,109
36,800
1,075
89,021
1972
23,787
19,151
33,192
1,218
85.161
1973
24,923
19,143
37,898
2,322
91,148
1974
21,590
16,602
35,202
1,111
80,766
1975
24,097
18,654
31,631
1,059
80,351
1976
23,525
17,831
31,049
709
78,094
1977
21,596
16,706
27,260
953
70,956
1978
22,944
17,766
26,686
909
72,649
1979
22,579
17,396
20,411
2.320
69,805
1980
19,296
14,265
16,717
4,182
60,724
1981
17.245
13,725
15,494
2,069
52,452
1982
19.989
15,987
11,574
337
52,208
1983
16,967
13,534
11,798
335
46,249
1984
18,443
14,256
9.855
360
46,864
1985
19,371
14,820
8,220
468
47,265
1986
16,822
12,536
7,507
407
41,148
1987
15,359
10,989
7,861
478
38,786
1988
16,900
12,041
8,360
286
41,825
1989
18,195
13,141
9,903
336
45,756
1990
16,850
12,164
9,424
418
43,169
1991
18,413
12,848
9,873
268
45,402
1992
16,673
11,559
12.218
220
45,561
1993
20,360
13,884
12,690
270
53,298
1994
18,714
12,987
13,940
632
52,058
1995
19,640
13,497
18,135
388
57,827
1996
22,175
14,836
18,103
470
61,399
1997
21,002
13,927
18,766
420
59,827
1998
19,172
12,961
21,416
522
59,817
1999
19,676
12,095
23,036
289
62,093
2000
19593
13,298
23,195
NA
66,542
NA: Not available due to problems with data reporting under utility deregulation.
Other consumers, including deliveries to municipalities and public authorities for institutional heating, street lighting, etc.. were
included in the industrial category prior to 1967. From 1967 on, other consumers were included in the Commercial category.
' Beginning with 1990 data. Commercial volumes include natural gas delivered for vehicular fuel use.
Industrial use includes refinery use of gas, but excludes pipeline fuel.
' Total Consumption includes total gas delivered to consumers, plus lease and plant fuel, plus pipeline fuel.
Sources: U.S. Depanment of Interior, Bureau of Mines. Mineral Industry Surveys, Natural Gas Production and Consumption , annual reports for
1950-75; U.S. Department of Energy. Energy Information Administration. Natural Gas Production and Consumption . annual reports for 1976-79
(EIA-0131); us. Department of Energy, Energy Information Administration, Natural Gas Annual , annual reports for 1980-99 (EIA-0131); U.S.
Department of Energy. Energy Information Administration, Natural Gas Monthly. Sept. 2001 and Feb. 2002.
III-16
Table NG3. Average Natural Gas Prices by Customer Class, 1950-2000
Price by Customer Class (doll
ars per thousand cubic feet)
Year
Residential
Commercial
Industrial
All Customers^
1950
0.473
0.328
0.142
0.301
1951
0.510
0.351
0.160
0.320
1952
0.507
0.352
0.192
0.324
1953
0.531
0.368
0.194
0.337
1954
0.589
0.415
0.201
0.388
1955
0.583
0.411
0.202
0.380
1956
0.585
0.412
0.206
0.382
1957
0.583
0.413
0.208
0.380
1958
0.647
0.443
0.218
0.401
1959
0.647
0.457
0.267
0.456
1960
0.660
0.464
0.274
0.454
1961
0.655
0.459
0.257
0.438
1962
0.752
0.506
0.251
0.464
1963
0.746
0.507
0.268
0.462
1964
0.763
0.533
0.303
0.495
1965
0.781
0.541
0.311
0.506
1966
0.779
0.543
0.304
0.495
1967
0.796
0.571
0.341
0.546
1968
0.822
0.603
0.326
0.554
1969
0.882
0.643
0.338
0.562
1970
0.907
0.659
0.339
0.572
1971
934
0.685
0.357
0.603
1972
0.965
0.691
0.381
0.630
1973
1.086
0.804
0.425
0.698
1974
1.119
0.926
0.580
0.804
1975
1.296
1.101
0.949
1.089
1976
1.364
1.187
0.930
1.164
1977
1.816
1.584
1.558
1.641
1978
1.894
1.646
1.642
1.720
1979
2.213
2.002
1.749
2.004
1980
3.053
3.117
3.143
3.182
1981
3.754
4.138
4.258
4.057
1982
4.460
4.874
5.488
4.829
1983
4 627
5.065
3.990
4.561
1984
4.861
5.242
5.173
5.025
1985
4.813
5.094
4.706
4.845
1986
4.446
4.476
3.913
4.312
1987
4.410
4.340
3.420
4.160
1988
4.300
4.300
3.080
4.040
1989
4.370
4.360
2 980
4.080
1990
4.590
4.640
3.270
4.260
1991
4.520
4.350
3.220
4.160
1992
4.800
4.460
4.190
4.510
1993
4.920
4.670
2.760
4.250
1994
5.230
4.910
4.910
4.990
1995
5.150
4.920
4.870
4.980
1996
4.860
4.640
4.880
4.790
1997
5.050
4.830
4.790
4.900
1998
5.250
5.130
4.680
4.960
1999
5.160
5.130
3.440
4.420
2000
5.930
5.860
4.290
5.240
1 Average prices were computed by dividing the annual value of natural gas consumed by a customer class by the respective annual
volume of natural gas consumed.
The All Customers category includes all the consumers in Table NG2.
Sources: U.S. Department of the Interior, Bureau of Mines, Mineral Industry Surveys, Natural Gas Production and Consumption . annual
reports for 1 950-75; U.S. Department of Energy, Energy Information Administration, Natural Gas Production and Consumption , annual
reports for 1976-79 (EIA-0131): U.S. Department of Energy, Energy Information Administration, Natural Gas Annual, annual reports for
1980-1999 {EIA-0131); U.S. Department of Energy, Energy Information Administration, Natural Gas Monthly, Sept. 2001 (EIA-0131).
III-17
Table NG4. Average Natural Gas Consumption and Annual Cost per
Consumer. 1980-1999^
Residential
Commercial
Industrial^
Average
Average
Average
Average
Average
Consumption
Annual
Consumption
Annual
Consumption
Annual
Year
(Mcf)
Cost
(dollars)
(Mcf)
Cost
(dollars)
(Mcf)
Cost
(dollars)
1980
117
356
670
2,089
32,841
103218
1981
104
389
610
2,523
31.364
133,551
1982
121
538
780
3,800
24,013
131,770
1983
102
470
651
3,298
25,048
99,956
1984
110
534
679
3,558
21,013
108,703
1985
115
555
706
3,595
17,908
84,267
1986
100
445
597
2,672
16,869
66.006
1987
91
404
514
2,231
18.072
61,806 E
1988
98
423
541
2,329
19.219
59.195 E
1989
106
464
591
2,579
23,138
68,951 E
1990
97
444
521
2,419
20,622
67,434 E
1991
104
468
554
2,411
21,842
70,331 E
1992
91
439
490
2,185
26.620
-
1993
108
-
569
-
27,469
-
1994
96
~
512
-
30,773
-
1995
96
-
512
-
39.168
-
1996
108
~
562
-
38.848
-
1997
100
-
507
-
40,619
—
1998
88
~
462
-
47,172
-
1999
-
-
425
-
58,025
-
Estimate
' Starting in 1993, figures were no longer given for average cost. Starting in 1999, residential average
consumption was no longer given.
^ Beginning in 1987, industrial costs per consumer are estimated by DEQ using Department of Energy
average prices of deliveries to industrial customers times industrial consumption volumes. The
Department of Energy did not calculate these numbers in national statistics because values associated
with gas delivered for the account of others are not always available. However, those values are not
considered to be significant in Montana.
Source: United States Department of Energy, Energy Information Administration, Natural Gas
Annual, annual reports for 1980-99 (ElA-0131).
III-18
Table NG5. Regulated Sales^ of Natural Gas by Gas Utilities,* 1950-2000 (million cubic feet)
Note: The gas sales numbers in this table are significantly lower than the total gas consumption numbers in Table NG2 tor several reasons. First,
these sales data are taken from annual reports filed by utilities to the Montana Public Service Commission The way utilities report gas sales to the
PSC IS drfterent from the way in which Table NG2 total consumption numbers are calculated by the U.S. Energy Information Administration. Also,
much of Industrial consumption since 1991 is not reported in this table due to different reporting requirements and processes used by utilities since
deregulation. These include the practice of not reporting gas used for pipeline transportation. This table does not include gas sales sold to other
utilities for resale in Montana, lease and plant fuel, pipeline fuel, or fuel used by utilities
MONTANA POWER COMPANY'
MONTANA-DAKOTA UTILITIES'
Residential
% of Total
Residential
% of Total
Year
and
Commercia
Industrial
Other
Total
Montana
Sales
and
Commercial
Industrial
Other
Total
Montana
Sales
1950
7,909
8,852
NA
16.761
54 2"i
4,228
240
469
4.937
16.0%
1951
8,076
12,970
NA
21.046
59 3%
5,514
1,180
499
7.193
20.3%
1952
8.435
13.760
NA
22.195
62.0%
7,340
1,845
468
9,653
25 9%
1953
8,229
13.624
NA
21.853
61.9%
7.223
1,863
480
9,566
27.1%
1954
8,737
12,225
NA
20.962
59-3%
7,912
1,649
495
10,056
284%
1955
11,231
15,511
NA
26,742
63 9%
7,594
1,996
533
10,123
24.2%
1956
11,100
15,584
NA
26,684
63 4°1
7,708
2,212
509
10,429
24.8%
1957
12,584
15.527
NA
28,111
64 4';i
7.797
2,056
492
10,345
237%
1958
12,391
15.173
NA
27,564
62 7%
7.429
3,233
551
11,213
25 5%
1959
14.401
12.629
NA
27,030
596%
8.678
2,934
507
12,119
26 7%
1960
14,533
15.462
NA
29,995
62,3%
8.516
3,148
342
12,006
25.0%
1961
14.517
16.654
NA
31,171
62,7%
8,689
3,606
177
12,472
25.1%
1962
15.133
18.080
NA
33.213
64 1%
9,148
3,051
103
12,302
237%
1963
14.893
19.666
NA
34.559
64.6%
8.826
3,862
79
12,767
23,9%
1964
16,853
20,958
NA
37.811
64.1%
9.620
4,587
55
14,362
24 4%
1965
17,977
22,195
NA
40,172
63.9%
10.955
4,430
61
15,446
24 6%
1966
17,731
23.058
NA
40,789
65 2%
10.414
4,256
55
14,725
23.5%
1967
18.027
20.766
NA
38,793
645'^'.
10.584
3,813
67
14,464
24,0%
1968
19,063
21.650
NA
40.713
646%
10.847
4,523
65
15,435
24.5%
1969
19,891
25.536
NA
45.427
64,2%
11.534
6,277
55
17,866
253%
1970
20,398
26,006
NA
46,404
62 9%
11,499
8,582
102
20,183
27 3%
1971
18,956
25.581
1,628
46,165
62.9%
11,612
8,317
139
20,068
27 3%
1972
20.068
26.128
1,491
47.687
62.4%
12,352
8,218
600
21,170
27,7%
1973
19.771
25.915
1,578
47.264
62 3°'o
11.525
8,685
1,415
21,623
28 5%
1974
18.931
26,301
1,408
46.640
63 4%
11.230
6,455
588
20.273
27 6%
1975
20,762
24,130
1.523
46.415
62.5%
12.779
7,774
NA
20.553
27.7%
1976
18,795
20.663
1.405
40.863
61.0%
12,208
7,100
NA
19.307
28 8%
1977
18,413
18.101
1,451
37.965
61 4"^,
11,898
5,923
NA
17.821
28 8%
1978
18,696
17,280
1,498
37.475
60.5%
13.784
3,981
NA
17,765
28.7%
1979
19,142
16,118
2,737
37.997
620%
13.500
3,480
NA
16,981
27 7%
1980
17,091
12,655
4.986
34,733
62.9%
11.332
3,627
NA
14,959
27 1%
1981
15,216
9,758
2.754
27,727
57.8%
10,312
5,307
NA
15,618
32 6%
1982
17,032
7,064
1,317
25.413
54.6%
12,228
4,148
60
16.436
35.3%
1983
14,606
6,829
1.152
22.587
54 8%
10.181
3,774
32
13.987
34 0%
1984
16.075
5 967
1.238
23.280
563%
10.744
2,451
59
13.254
32,1%
1985
16,916
6.043
1.271
24,230
58 3%
11.094
1,336
19
12,449
29.9%
1986
14,461
5,208
1.099
20,768
58 6%
9.191
607
15
9,813
27 7%
1987
14,090
5.358
748
20,196
62.6%
7.712
254
15
7,981
24,7%
1988
15,027
6.652
732
22,410
63 2%
8,285
475
17
8.776
24 8%
1989
16,771
7,050
771
24,592
64.0%
9.069
161
17
9,247
24 1%
1990
15,915
6.057
744
22,715
64.5%
8.192
54
17
8.262
235%
1991
16,522
4.980
683
22,185
62.2%
9.074
12
11
9,096
25 5%
1992
18,541
672
221
19,534
60,4%
8,290
4
13
8,307
25.7%
1993
21,216
756
1481
23.453
60 4%
9.927
12
8
9,947
256%
1994
19,680
603
499
20.782
59 5%
9.258
3
10
9,271
26 5%
1995
20,900
616
517
22,033
60 8%
9.345
NA
NA
9,345
25,8%
1996
23,414
681
599
24.694
61.1%
10,891
NA
NA
10,891
26.9%
1997
22.465
619
488
23,572
60,4%
10,148
NA
NA
10,148
26 0%
1998
19,298
309
294
19.901
58.4%
8.906
NA
NA
8,906
26 1%
1999
18,277
281
244
18.802
57 8%
8.906
NA
NA
8,906
27 4%
2000
18,382
211
282
18.875
58,1%
9,301
NA
NA
9301
28.6%
III-19
Table NG5. (continued)
GREAT FALLS GAS COMPANY/ ENERGY WEST*
OTHER UTILITIES'
TOTAL SALES'
Residential
% o( Total
Total for all
Sectors
% of Total
Residential
Year
and
Industrial
Other
Total
Montana
Montana
and
Industrial
Other
TOTAL
Commercial
Sales
Sales
Commercial
1950
2,509
208
53
2.770
9.0°'o
6.481
20 9<'.4
21,127
9.300
522
30.949
1951
2.697
311
191
3.199
90%
4.055
1 1 .4%
20.342
14.461
690
35,493
1952
2.566
228
333
3.127
87%
852
2.4%
19.193
15.833
801
35,827
1953
2.478
238
350
3.066
8.7%
814
2,3%
18.744
15,725
830
35,299
1954
2.795
255
400
3.450
9.8%
892
2.5%
20.336
14,129
895
35,360
1955
3.284
243
434
3.961
9.5%
1,049
2.5%
23.158
17.750
967
41,875
1956
3.361
204
396
3.961
9.4%
1,019
2.4%
23.188
18,000
905
42,093
1957
3,510
258
451
4.219
9.7%
955
2 2%
24.846
17,841
943
43,630
1958
3.365
268
475
4,108
9.3%
1.067
2.4%
24.252
18,674
1.026
43.952
1959
4.048
388
566
5.002
1 1 0%
1.175
26%
28.302
15,951
1,073
45.326
1960
3.928
512
516
4,956
10.3%
1,152
2.4%
28,129
19.122
858
48.109
1961
4.067
380
606
5,053
10.2%
1,045
2.1%
28,318
20,640
763
49,741
1962
4.092
371
752
5,215
101%
1,078
2.1%
29.451
21,502
855
51.808
1963
4.030
396
793
5.219
9.8%
945
1.8%
28.694
23.924
872
53,490
1964
4.446
480
847
5.773
9.8%
1,018
1.7%
31.937
26.125
902
58,964
1965
4,767
499
868
6.134
9.8%
1,160
laro
34.859
27.124
929
62,912
1966
4.593
490
846
5.929
9.5%
1,125
18%
33.863
27,804
901
62,568
1967
4.505
397
856
5.758
9.6%
1,160
1.9%
34,276
24.976
923
60175
1968
4.504
424
852
5.780
9.2%
1,074
17%
35.488
26.597
917
63.002
1969
5,042
412
891
6,345
9,0%
1,118
16%
37,585
32.225
946
70.756
1970
4,926
378
902
6.206
8.4%
1,010
1 4°.i
37,833
34.966
1,004
73,803
1971
4.901
367
895
6.163
8.4%
1.048
1 4%
36,517
34,265
2,662
73,444
1972
5.185
353
884
6,422
8.4%
1,105
1 4°i
38,710
34,699
2,975
76,384
1973
4.729
414
864
6,007
7.9%
982
1,3%
37,007
35,014
3.857
75.876
1974
4.504
412
807
5,723
7 8%
936
13%
35,601
35,168
2,803
73,572
1975
5.145
354
845
6,344
8.5%
1.000
1.3%
39.686
.1?,?58
2,368
74,312
1976
4.875
237
892
6,004
9.0%
762
1.1%
36.640
28.000
2,297
66,935
1977
4.317
246
734
5.297
8.6%
715
1.2%
35.343
24.270
2,185
61,798
1978
4.818
196
826
5.840
9.4%
824
1 3%
38.122
21.457
2,324
61.904
1979
4.512
249
750
5.512
9.0%
804
1 3%
37.958
19.847
3,487
61.294
1980
3.888
266
689
4.842
8.8%
669
1.2%
32,980
16.548
5,675
55,203
1981
3.257
169
619
4,044
8,4%
573
1.2%
29,358
15.234
3,373
47,962
1982
3.289
188
627
4.104
88%
596
1.3%
33,145
11.460
1,944
46,549
1983
3.320
206
636
4.162
101%
446
1,1%
28.553
10.809
1,820
41.182
1984
3.531
256
530
4.317
10.4%
487
1.2%
30.837
8,674
1,827
41,338
1985
3.719
181
536
4.436
10.7%
474
1.1%
32.203
7,560
1,826
41,589
1986
3,538
285
592
4.415
12:5%
465
1.3%
27.655
6.100
1,706
35,461
1987
3064
193
442
3.699
11.5%
388
12%
25.254
5.805
1,205
32,264
1988
3.189
170
499
3.858
10.9%
386
1,1%
26.887
7.296
1,247
35,431
1989
3.567
160
411
4.138
10 8%
427
1.1%
29.834
7.371
1,199
38,404
1990
3,381
78
401
3.860
11.0%
392
1.1%
27.879
6.169
1,162
35,230
1991
3,435
164
389
3.988
11.2%
400
1.1%
29.430
5.156
1,083
35,669
1992
4.139
NA
4,139
12.8%
373
1.2%
31,443
676
234
32,353
1993
4.478
490
4,968
12.8%
432
1.1%
36.053
768
1.979
38,800
1994
3.971
478
4.449
12.7%
443
13%
33.352
606
987
34,945
1995
3.942
464
4.406
12.2%
447
1.2%
34,634
616
981
36,231
1996
4.362
NA
4.362
108%
498
1.2%
39,165
681
599
40,445
1997
4,496
314
4,810
12.3%
504
1.3%
37,613
619
802
39,034
1998
3.535
1331
4.866
14.3%
418
1.2%
32,157
309
1.625
34,091
1999
3.401
996
4.397
13.5%
427
1,3%
31.011
281
1.240
32,532
2000
3.058
1009
4,067
12.5%
239
0.7%
30.980
211
1,291
32,482
NA
Not Available
See notes on Idlowing page.
III-20
Table NG5. (continued)
' Sales to other utilities for resale and sales of natural gas to Canada are not included.
^ From 1950 to 1970. government and municipal sales were reported in the "Residential and Commercial" sector.
"Other" includes interdepartmental use, sales to government and municipal authorities tor heating, and special off-line sales
to fimis in f^lontana where these figures are reported separately.
The following 3 lines from Fran Balkovetz at MPC:
III iw I 1^ wiieii iviri., s oa:> uiiiiiy bidiieu ueieyuidiiiiy iib t;ubiLnnei>>. hih a lesuit. iiieie iieive ueeri uiiaiiyeb in iimabuieu b(iitf:> nicuiuuuiuyy iiuni
1991 until present. This created differences after 1991 in how MPC's data is reported and is part of the reason why the numbers in the "industnal'
column decrease so sharply in 1992. It is very hard to reconcile these differences and thus the 1990's numbers are given as presented in Schedule
In 1992, some customers in the industnal' category left MPC as a result of deregulation
In 1992 and 1993. Schedule 35 was not reported like m later years. In 1992. figures used are from Actual Billed Volumes supplied by Fran
Balkovetz at MPC
* Prior to 1975 "Other" includes interdepartmental use and natural gas used in MDU's electnc generating plants at Baker.
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