Table 7.  Energy Consumption Estimates by Source, Selected Years, 1960-2006, Montana
Year	Coal a	Natural Gas b	Petroleum															Nuclear Electric Power	Hydro- electric Power f	Bio- mass a,g		Other a,h		Net Inter- state Flow of Electric- ity/Losses i		Total j
			Asphalt & Road Oil a		Aviation Gasoline a	Distillate Fuel Oil a	Jet Fuel a	Kero- sene a		LPG a,c	Lubri- cants a	Motor Gasoline d	Residual Fuel Oil a	Other a,e		Total
	Thousand Short Tons	Billion Cubic Feet	Thousand Barrels															Million kWh
1960	253	56	865		1,006	4,898	265	477		737	161	6,922	2,063	1,725		19,118		0	5,801	– –		– –		– –		– –
1961	336	59	823		1,427	5,278	280	366		859	157	6,979	2,580	2,112		20,861		0	6,498	– –		– –		– –		– –
1962	373	63	786		473	5,549	311	265		819	171	7,553	3,052	2,320		21,298		0	6,410	– –		– –		– –		– –
1963	357	67	900		499	5,393	340	359		766	171	7,481	2,852	2,704		21,465		0	6,011	– –		– –		– –		– –
1964	381	69	1,328		340	5,702	360	679		925	179	7,374	2,300	2,654		21,842		0	6,820	– –		– –		– –		– –
1965	370	71	1,003		312	4,962	384	248		926	189	7,709	1,241	2,835		19,809		0	8,389	– –		– –		– –		– –
1966	392	72	974		198	5,695	441	118		1,167	196	7,953	1,459	2,977		21,177		0	7,940	– –		– –		– –		– –
1967	381	65	1,066		131	3,394	574	859		1,585	175	8,104	1,231	3,092		20,211		0	8,705	– –		– –		– –		– –
1968	450	63	1,221		65	4,113	697	815		1,689	192	8,585	1,509	3,540		22,427		0	8,925	– –		– –		– –		– –
1969	619	78	1,189		38	4,641	806	657		1,690	196	8,737	1,556	3,739		23,250		0	9,449	– –		– –		– –		– –
1970	763	88	1,347		43	4,827	649	376		1,326	200	9,262	1,268	3,372		22,670		0	8,745	– –		– –		– –		– –
1971	731	88	1,337		42	5,715	767	362		1,402	188	9,494	1,262	3,356		23,926		0	9,594	– –		– –		– –		– –
1972	830	84	1,489		94	6,206	762	383		1,705	201	10,137	1,469	3,864		26,308		0	9,444	– –		– –		– –		– –
1973	951	90	1,397		110	6,989	757	405		1,503	219	10,883	1,765	4,018		28,048		0	7,520	– –		– –		– –		– –
1974	923	80	1,222		105	7,840	780	174		1,466	210	10,550	2,262	3,708		28,316		0	9,724	– –		– –		– –		– –
1975	1,149	80	924		79	7,586	818	122		1,370	208	10,630	2,178	3,772		27,687		0	10,166	– –		– –		– –		– –
1976	2,507	74	1,283		94	8,411	753	79		1,421	231	11,605	2,525	3,440		29,843		0	12,402	– –		– –		– –		– –
1977	3,385	71	1,133		92	8,258	772	93		1,368	247	11,100	2,506	3,700		29,270		0	8,460	– –		– –		– –		– –
1978	3,390	73	942		87	8,232	699	95		1,662	266	12,809	2,502	3,705		30,999		0	11,708	– –		– –		– –		– –
1979	3,686	70	1,054		122	9,037	907	17		1,094	278	11,162	5,773	3,424		32,869		0	10,344	– –		– –		– –		– –
1980	3,520	61	1,020		159	7,509	920	0		1,806	247	10,416	4,025	3,159		29,262		0	9,966	– –		– –		– –		– –
1981	3,622	52	1,035		177	6,469	800	26		1,027	237	10,797	2,494	2,623		25,686		0	11,323	– –		– –		– –		– –
1982	2,826	52	884		92	5,828	625	0		1,446	216	10,429	1,608	2,398		23,525		0	10,920	– –		– –		– –		– –
1983	2,533	46	1,130		102	8,863	652	18		1,497	227	10,525	1,306	2,328		26,648		0	11,561	– –		– –		– –		– –
1984	5,283	47	1,215		77	8,161	642	8	[R ]	1,032	242	10,451	798	2,639		25,277		0	11,112	– –		– –		– –		– –
1985	5,713	47	1,463		91	10,444	678	10		1,576	225	10,188	133	2,512		27,320		0	10,175	– –		– –		– –		– –
1986	7,780	41	1,989		105	6,621	867	22		1,505	220	10,158	47	2,507		24,041		0	10,857	– –		– –		– –		– –
1987	7,730	39	1,642		82	6,223	718	8		1,716	249	10,258	23	3,236		24,156		0	8,925	– –		– –		– –		– –
1988	10,634	42	1,473		107	6,078	809	4		1,515	240	10,441	221	3,624		24,513		0	8,237	– –		– –		– –		– –
1989	10,458	46	1,749		95	7,336	750	3		1,608	246	10,310	180	3,615		25,893		0	9,571	– –		– –		– –		– –
1990	9,850	43	1,487		111	7,280	708	8		1,740	253	10,328	218	3,659		25,792		0	10,717	– –		– –		– –		– –
1991	10,786	45	1,350		108	7,220	615	3		1,053	227	10,360	145	3,203		24,284		0	11,970	– –		– –		– –		– –
1992	11,300	46	1,309		75	6,836	864	1		1,018	231	10,727	88	4,007		25,156		0	8,271	– –		– –		– –		– –
1993	9,499	53	1,707		64	7,315	901	8		2,200	235	10,999	680	3,157	[R ]	27,267	[R ]	0	9,614	– –		– –		– –		– –
1994	11,357	52	1,964		75	7,381	855	7		1,055	246	11,097	369	3,594	[R ]	26,643	[R ]	0	8,150	– –		– –		– –		– –
1995	10,272	58	1,293		78	8,049	1,052	1		918	242	11,328	236	4,811	[R ]	28,008	[R ]	0	10,746	– –		– –		– –		– –
1996	8,210	61	1,702		99	8,070	999	1		1,618	235	11,753	181	5,376	[R ]	30,032	[R ]	0	13,795	– –		– –		– –		– –
1997	9,653	60	1,448		71	9,037	792	2		277	248	11,480	162	5,013	[R ]	28,529	[R ]	0	13,406	– –		– –		– –		– –
1998	11,046	60	1,594		102	7,863	797	3		271	259	11,596	106	5,739	[R ]	28,331	[R ]	0	11,118	– –		– –		– –		– –
1999	11,074	62	2,625		121	7,921	836	2		527	262	11,768	20	6,530	[R ]	30,614	[R ]	0	13,822	– –		– –		– –		– –
2000	10,554	68	2,151		134	8,069	747	1		1,324	258	11,559	1	5,466	[R ]	29,709	[R ]	0	9,623	– –		– –		– –		– –
2001	11,000	65	903		109	8,476	756	12		1,400	237	11,640	2	4,953	[R ]	28,488	[R ]	0	6,613	– –		– –		– –		– –
2002	9,841	70	1,040		115	8,145	768	10		1,502	234	11,871	39	5,554	[R ]	29,278	[R ]	0	9,567	– –		– –		– –		– –
2003	11,127	68	319		101	7,721	832	8		2,151	216	11,846	6	5,365	[R ]	28,566	[R ]	0	8,702	– –		– –		– –		– –
2004	11,522	67	929		42	9,988	1,008	6		2,384	219	11,991	42	5,577	[R ]	32,187	[R ]	0	8,856	– –		– –		– –		– –
2005	11,822	68	730	[R ]	47	11,465	1,112	9		2,455	218	11,770	106	5,613	[R ]	33,527	[R ]	0	9,587	– –		– –		– –		– –
2006	11,531	74	1,486		87	12,232	1,045	1		2,500	212	11,960	125	5,953		35,601		0	10,130	– –		– –		– –		– –
Trillion Btu
1960	4.0	57.6	5.7		5.1	28.5	1.4	2.7		3.0	1.0	36.4	13.0	10.4		107.1		0.0	62.4	7.5		(s)		-11.1		227.6
1961	5.1	61.3	5.5		7.2	30.7	1.5	2.1		3.4	0.9	36.7	16.2	12.7		117.0		0.0	69.2	7.3		(s)		-18.1		241.9
1962	5.7	65.7	5.2		2.4	32.3	1.7	1.5		3.3	1.0	39.7	19.2	13.9		120.2		0.0	67.7	7.2		(s)		-18.0		248.4
1963	5.4	66.6	6.0		2.5	31.4	1.8	2.0		3.1	1.0	39.3	17.9	16.3		121.4		0.0	63.0	7.4		(s)		-11.1		252.7
1964	5.8	69.5	8.8		1.7	33.2	2.0	3.8		3.7	1.1	38.7	14.5	15.9		123.5		0.0	71.4	8.0		(s)		-14.2		264.0
1965	5.5	70.8	6.7		1.6	28.9	2.1	1.4		3.7	1.1	40.5	7.8	17.0		110.8		0.0	87.7	7.8		(s)		-23.7		259.0
1966	5.8	72.1	6.5		1.0	33.2	2.4	0.7		4.7	1.2	41.8	9.2	17.9		118.4		0.0	82.7	7.6		(s)		-10.9		275.8
1967	5.5	64.9	7.1		0.7	19.8	3.2	4.9		6.1	1.1	42.6	7.7	18.6		111.6		0.0	90.8	7.4		(s)		-19.7		260.4
1968	6.7	62.8	8.1		0.3	24.0	3.9	4.6		6.4	1.2	45.1	9.5	21.3		124.4		0.0	92.8	7.8		(s)		-14.1		280.5
1969	9.6	78.2	7.9		0.2	27.0	4.5	3.7		6.4	1.2	45.9	9.8	22.5		129.1		0.0	98.7	7.4		(s)		-8.8		314.3
1970	12.0	90.6	8.9		0.2	28.1	3.6	2.1		5.0	1.2	48.7	8.0	20.3		126.1		0.0	91.8	6.6		(s)		-4.4		322.8
1971	11.5	91.1	8.9		0.2	33.3	4.3	2.1		5.3	1.1	49.9	7.9	20.2		133.1		0.0	100.5	6.7		(s)		-9.0		333.9
1972	13.2	87.0	9.9		0.5	36.1	4.3	2.2		6.4	1.2	53.2	9.2	23.2		146.3		0.0	98.0	6.3		(s)		-8.4		342.4
1973	15.2	93.1	9.3		0.6	40.7	4.2	2.3		5.6	1.3	57.2	11.1	24.2		156.5		0.0	78.1	6.5		(s)		-1.7		347.7
1974	14.7	81.7	8.1		0.5	45.7	4.4	1.0		5.5	1.3	55.4	14.2	22.3		158.3		0.0	101.5	5.0		(s)		-9.3		352.0
1975	18.6	81.2	6.1		0.4	44.2	4.6	0.7		5.1	1.3	55.8	13.7	22.7		154.6		0.0	105.8	6.2		(s)		-20.9		345.5
1976	42.2	75.4	8.5		0.5	49.0	4.2	0.4		5.3	1.4	61.0	15.9	20.7		166.8		0.0	128.6	7.2		(s)		-55.0		365.2
1977	57.8	71.6	7.5		0.5	48.1	4.3	0.5		5.0	1.5	58.3	15.8	22.2		163.8		0.0	88.3	9.1		(s)		-29.4		361.1
1978	57.6	72.7	6.3		0.4	48.0	3.9	0.5		6.1	1.6	67.3	15.7	22.3		172.1		0.0	121.3	10.9		(s)		-51.2		383.3
1979	63.4	69.1	7.0		0.6	52.6	5.1	0.1		4.0	1.7	58.6	36.3	20.6		186.7		0.0	107.1	12.3		(s)		-41.2		397.3
1980	60.2	61.5	6.8		0.8	43.7	5.2	0.0		6.6	1.5	54.7	25.3	19.0		163.6		0.0	103.5	11.1		(s)		-39.5	[R ]	360.5
1981	62.5	53.0	6.9		0.9	37.7	4.5	0.1		3.7	1.4	56.7	15.7	16.2		143.8		0.0	118.4	12.6		(s)		-52.9		337.4	[R ]
1982	48.6	52.8	5.9		0.5	33.9	3.5	0.0		5.2	1.3	54.8	10.1	14.8		130.0		0.0	114.2	12.4		(s)		-40.9		317.1
1983	42.8	46.6	7.5		0.5	51.6	3.7	0.1		5.4	1.4	55.3	8.2	14.2		147.9		0.0	121.6	13.9		(s)		-49.4		323.5
1984	90.3	47.1	8.1		0.4	47.5	3.6	(s)		3.7	1.5	54.9	5.0	16.0		140.8		0.0	116.0	14.3		(s)		-48.7	[R ]	359.9
1985	99.1	47.3	9.7		0.5	60.8	3.8	0.1		5.7	1.4	53.5	0.8	15.5		151.7		0.0	106.3	14.4		0.2		-48.4		370.6	[R ]
1986	133.2	41.1	13.2		0.5	38.6	4.8	0.1		5.5	1.3	53.4	0.3	15.5		133.3		0.0	113.4	20.2		(s)		-88.3		353.0
1987	132.9	39.6	10.9		0.4	36.3	4.0	(s)		6.3	1.5	53.9	0.1	19.7		133.2		0.0	93.0	17.9		0.1		-87.0		329.7
1988	181.5	42.9	9.8		0.5	35.4	4.5	(s)		5.5	1.5	54.8	1.4	21.9		135.4		0.0	85.0	18.6		(s)		-121.2		342.2
1989	179.4	46.7	11.6		0.5	42.7	4.2	(s)		5.9	1.5	54.2	1.1	21.8		143.5		0.0	99.8	10.7	[k ]	0.2	[k ]	-127.9	[R ]	352.4	[k ]
1990	168.8	44.4	9.9		0.6	42.4	4.0	(s)		6.3	1.5	54.3	1.4	22.0		142.3		0.0	111.5	11.7		0.3		-128.7	[R ]	350.3	[R ]
1991	184.2	46.7	9.0		0.5	42.1	3.5	(s)		3.8	1.4	54.4	0.9	19.4		135.0		0.0	124.9	17.1		0.2		-153.7		354.4
1992	194.1	46.6	8.7		0.4	39.8	4.8	(s)		3.7	1.4	56.3	0.6	24.1		139.8		0.0	85.5	10.0		0.2		-129.4		346.9
1993	161.9	54.3	11.3		0.3	42.6	5.0	(s)		7.9	1.4	57.8	4.3	19.1	[R ]	149.8	[R ]	0.0	99.1	9.7		0.1		-110.7	[R ]	364.3	[R ]
1994	193.7	53.3	13.0		0.4	43.0	4.8	(s)		3.8	1.5	58.0	2.3	21.7	[R ]	148.6	[R ]	0.0	84.1	10.1		0.1		-122.2		367.6	[R ]
1995	175.3	59.6	8.6		0.4	46.9	5.9	(s)		3.3	1.5	59.1	1.5	29.0	[R ]	156.1	[R ]	0.0	110.8	16.4		0.1		-133.0		385.3	[R ]
1996	138.8	63.3	11.3		0.5	47.0	5.7	(s)		5.8	1.4	61.3	1.1	32.4	[R ]	166.5	[R ]	0.0	142.6	15.7		0.3		-132.3		394.8	[R ]
1997	162.6	61.7	9.6		0.4	52.6	4.5	(s)		1.0	1.5	59.8	1.0	30.2	[R ]	160.6	[R ]	0.0	136.9	16.2		0.2		-171.0		367.1	[R ]
1998	186.1	61.4	10.6		0.5	45.8	4.5	(s)		1.0	1.6	60.4	0.7	34.6	[R ]	159.7	[R ]	0.0	113.4	14.7		0.2		-147.0		388.5	[R ]
1999	186.8	63.6	17.4		0.6	46.1	4.7	(s)		1.9	1.6	61.3	0.1	39.4	[R ]	173.2	[R ]	0.0	141.3	15.4		0.2		-184.5		396.0	[R ]
2000	176.8	69.6	14.3		0.7	47.0	4.2	(s)		4.8	1.6	60.2	(s)	33.0	[R ]	165.8	[R ]	0.0	98.2	15.3		0.3		-117.9		407.9	[R ]
2001	184.4	66.5	6.0		0.5	49.4	4.3	0.1		5.1	1.4	60.6	(s)	29.8	[R ]	157.2	[R ]	0.0	68.3	11.9		0.3		-132.8	[R ]	355.8	[R ]
2002	166.3	68.9	6.9		0.6	47.4	4.4	0.1		5.4	1.4	61.8	0.2	33.4	[R ]	161.7	[R ]	0.0	97.3	11.0		0.5		-128.8	[R ]	376.9	[R ]
2003	189.0	67.7	2.1		0.5	45.0	4.7	(s)		7.8	1.3	61.7	(s)	32.3	[R ]	155.5	[R ]	0.0	89.1	12.0		0.3	[R ]	-144.0	[R ]	369.6	[R ]
2004	195.6	66.7	6.2		0.2	58.2	5.7	(s)		8.6	1.3	62.5	0.3	33.5	[R ]	176.6	[R ]	0.0	88.8	12.5	[R ]	0.2		-147.3	[R ]	393.0	[R ]
2005	199.5	71.1	4.8		0.2	66.8	6.3	0.1		8.9	1.3	61.4	0.7	33.7	[R ]	184.2	[R ]	0.0	95.9	12.3	[R ]	0.3	[R ]	-152.8	[R ]	410.5	[R ]
2006	194.3	75.1	9.9		0.4	71.2	5.9	(s)		9.0	1.3	62.4	0.8	35.8		196.7		0.0	100.5	12.4		3.9		-153.9		429.1
aThe continuity of these data series estimates may be affected by changing data sources and estimation methodologies.  See the Technical Notes for each type of energy. iNet interstate flow of electricity is the difference between the amount of energy in the electricity sold within a State (including associated losses) and the energy input at the electric utilities within the State.  A positive number indicates that more electricity (including associated losses) came into the State than went out of the State during the year; conversely, a negative number indicates that more electricity (including associated losses) went out of the State than came into the State. bPhysical unit data include supplemental gaseous fuels (SGF) for all years; Btu data exclude SGF for 1980 forward. jFrom 1981 through 1992, includes fuel ethanol blended into motor gasoline but not shown in the motor gasoline column. cLiquefied petroleum gases. kThere is a discontinuity in this time series between 1988 and 1989 due to the expanded coverage of renewable energy sources beginning in 1989. dBeginning in 1993, includes fuel ethanol blended into motor gasoline. kWh = Kilowatthours.  – – = Not applicable. e"Other" is the subtotal of 16 petroleum products consumed in the industrial sector.  See a full description in the Technical Notes, Section 4, "Other Petroleum Products." Where shown, R = Revised data and (s) = Physical unit value less than +0.5 and greater than -0.5 or Btu value less than +0.05 and greater than -0.05. fConventional hydroelectric power.  Includes pumped-storage hydroelectricity, which cannot be separately identified, from 1960 through 1989. Note:  Totals may not equal sum of components due to independent rounding. gWood and waste.  Prior to 2001, includes non-biomass waste. Sources:  Data sources, estimation procedures, and assumptions are described in the Technical Notes. h"Other" is geothermal, wind, photovoltaic, solar thermal energy, and net imports of electricity.