| Total Production of Energy and Its Composition | |||||
| Year | Total Energy Production (10 000 tons of SCE) |
Percentage to Total Energy Production | |||
| Coal | Crude Oil | Natural Gas | Hydropower | ||
| 1952 | 4871 | 96.7 | 1.3 | 2.0 | |
| 1957 | 9861 | 94.9 | 2.1 | 0.1 | 2.9 |
| 1962 | 17185 | 91.4 | 4.8 | 0.9 | 2.9 |
| 1965 | 18824 | กก88.0 | 8.6 | 0.8 | 2.6 |
| 1970 | 30990 | 81.6 | 14.1 | 1.2 | 3.1 |
| 1975 | 48754 | 70.6 | 22.6 | 2.4 | 4.4 |
| 1978 | 62770 | 70.3 | 23.7 | 2.9 | 3.1 |
| 1980 | 63735 | กก69.4 | 23.8 | 3.0 | 3.8 |
| 1985 | 85546 | 72.8 | 20.9 | 2.0 | 4.3 |
| 1986 | 88124 | 72.4 | 21.2 | 2.1 | 4.3 |
| 1987 | 91266 | 72.6 | 21.0 | 2.0 | 4.4 |
| 1988 | 95801 | 73.1 | 20.4 | 2.0 | 4.5 |
| 1989 | 101639 | 74.1 | 19.3 | 2.0 | 4.6 |
| 1990 | 103922 | 74.2 | 19.0 | 2.0 | 4.8 |
| 1991 | 104844 | 74.1 | 19.2 | 2.0 | 4.7 |
| 1992 | 107256 | 74.3 | 18.9 | 2.0 | 4.8 |
| 1993 | 111059 | 74.0 | 18.7 | 2.0 | 5.3 |
| 1994 | 118729 | 74.6 | 17.6 | 1.9 | 5.9 |
| 1995 | 129034 | 75.3 | 16.6 | 1.9 | 6.2 |
| 1996 | 132616 | 75.2 | 17.0 | 2.0 | 5.8 |
| 1997 | 132410 | 74.1 | 17.3 | 2.1 | 6.5 |
| 1998 | 124250 | 71.9 | 18.5 | 2.5 | 7.1 |
| 1999 | 110000 | 68.2 | 20.9 | 3.1 | 7.8 |
| 2000 | 106988 | 66.6 | 28.1 | 3.4 | 8.2 |
| 2001 | 121000 | 68.0 | 20.2 | 3.4 | 8.4 |
| 2002 | 139000 | 70.7 | 17.2 | 3.2 | 8.9 |
| 2003 | 160300 | 74.2 | 15.2 | 2.9 | 7.7 |
| The coefficient for conversion of electric power into SCE (standard coal equivalent) is calculated on the average coal consumption in generating electric power in the same year. | |||||