Plant Type	2002	2001	2000	1999	1998	1997	1996	1995	1994	1993	1992	1991
Operation
Nuclear	8.54	8.3	8.41	8.93	9.98	11.02	9.47	9.43	9.79	10.2	10.43	10.49
Fossil Steam	2.54	2.4	2.31	2.21	2.17	2.22	2.25	2.38	2.32	2.37	2.38	2.29
Hydroelectric[1]	5.07	5.79	4.74	4.17	3.85	3.29	3.87	3.69	4.53	3.82	4.33	3.88
Gas Turbine and Small Scale[2]	2.72	3.15	4.57	5.16	3.85	4.43	5.08	3.57	4.58	6.47	10.18	9.61
Maintenance
Nuclear	5.04	5.01	4.93	5.13	5.79	6.9	5.68	5.21	5.2	5.73	5.93	5.5
Fossil Steam	2.68	2.61	2.45	2.38	2.41	2.43	2.49	2.65	2.82	2.96	2.95	2.98
Hydroelectric1	3.58	3.97	2.99	2.6	2	2.49	2.08	2.19	2.9	2.65	3.3	2.89
Gas Turbine and Small Scale2	2.38	3.33	3.5	4.8	3.43	3.43	4.98	4.28	5.39	7.52	12.15	12.93
Fuel
Nuclear	4.6	4.67	4.95	5.17	5.39	5.42	5.5	5.75	5.87	5.88	6.12	6.71
Fossil Steam	16.11	18.13	17.69	15.62	15.94	16.8	16.51	16.07	16.67	17.65	17.49	17.91
Hydroelectric1	--	--	--	--	--	--	--	--	--	--	--	--
Gas Turbine and Small Scale2	31.82	43.56	39.19	28.72	23.02	24.94	30.58	20.83	22.19	26.39	28.59	30.96
Total
Nuclear	18.18	17.98	18.28	19.23	21.16	23.33	20.65	20.39	20.86	21.8	22.48	22.7
Fossil Steam	21.32	23.14	22.44	20.22	20.52	21.45	21.25	21.11	21.8	22.97	22.83	23.17
Hydroelectric1	8.65	9.76	7.73	6.77	5.86	5.78	5.95	5.89	7.43	6.47	7.63	6.76
Gas Turbine and Small Scale2	36.93	50.04	47.26	38.68	30.3	32.8	40.64	28.67	32.16	40.38	50.92	53.51
[1] Conventional hydro and pumped storage.   [2] Gas turbine, internal combustion, photovoltaic, and wind plants.       Notes: Expenses are average expenses weighted by net generation.A mill is a monetary cost and billing unit equal to 1/1000 of the U.S. dollar (equivalent to 1/10 of one cent). Totals may not equal sum of components because of independent rounding.    Source: Federal Energy Regulatory Commission, FERC Form 1, "Annual Report of Major Electric Utilities, Licensees and Others."