7-10  能源加工转换效率
单位：%
年  份	总效率	发电及电站供热	炼  焦	炼  油
1983	69.93	36.94	91.18	99.16
1984	69.16	36.95	90.08	99.17
1985	68.29	36.85	90.79	99.10
1986	68.32	36.69	90.63	99.04
1987	67.48	36.75	90.46	98.81
1988	66.54	36.34	90.77	98.76
1989	66.51	36.74	90.30	98.57
1990	67.20	37.34	91.28	97.90
1991	65.90	37.60	89.90	98.10
1992	66.00	37.80	92.70	96.80
1993	67.32	39.90	98.05	98.49
1994	65.20	39.35	89.62	97.48
1995	71.05	37.31	91.99	97.67
1996	71.50	38.30	94.07	97.46
1997	69.23	35.89	92.08	97.37
1998	69.44	37.06	94.97	97.42
1999	70.45	38.99	95.80	97.51
2000	70.96	39.91	96.28	97.32
2001	70.41	39.40	97.17	97.83
2002	69.78	39.41	97.96	96.71
2003	69.79	39.25	97.47	96.80