| ELECTRICITY SECTOR OVERVIEW (from 1970 to 1979) | ||||||||||
| 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | |
| GENERATION SRI LANKA (GWh) | ||||||||||
| HYDRO, CEB AND SPP | 740.3 | 825.5 | 847.1 | 695.7 | 997.5 | 1,077.6 | 1,108.4 | 1,214.9 | 1,366.3 | 1,461.8 |
| THERMAL, CEB, IPP AND HIRED | 45.4 | 23.8 | 97.8 | 283.5 | 14.3 | 1.3 | 24.3 | 2.1 | 19.3 | 64.4 |
| NON-CONVENTIONAL, CEB | ||||||||||
| SELF-GENERATION BY CUSTOMERS | ||||||||||
| OFF-GRID, CONVENTIONAL | ||||||||||
| OFF-GRID, NON-CONVENTIONAL | ||||||||||
| GROSS GENERATION SRI LANKA | 785.7 | 849.3 | 944.9 | 979.2 | 1,011.8 | 1,078.9 | 1,132.7 | 1,217.0 | 1,385.6 | 1,526.2 |
| TOTAL LOSSES IN SRI LANKA | ||||||||||
| POWER PLANT OWN USE (GWh) | 5.2 | 5.7 | 11.7 | 21.6 | 6.2 | 5.5 | 7.1 | 6.4 | 9.3 | 9.7 |
| T&D LOSS (GWh) | 161.0 | 168.2 | 160.7 | 140.1 | 165.8 | 167.9 | 192.6 | 238.8 | 291.7 | 300.4 |
| TOTAL OWN USE AND LOSS (GWh) | 166.2 | 173.9 | 172.4 | 161.7 | 172.0 | 173.4 | 199.7 | 245.2 | 301.0 | 310.1 |
| TOTAL OWN USE AND LOSS (% OF GROSS GEN) | 21.2% | 20.5% | 18.2% | 16.5% | 17.0% | 16.1% | 17.6% | 20.1% | 21.7% | 20.3% |
| TOTAL ELECTRICITY USE (CEB +LECO+SELF+OFFGRID)(GWh) | ||||||||||
| DOMESTIC | 138.3 | 145.4 | 157.9 | 170.8 | 172.2 | 185.2 | 199.0 | 216.7 | 238.3 | 280.6 |
| RELIGIOUS | 2.3 | 2.5 | 3.6 | 3.6 | 3.6 | 3.8 | 3.9 | 5.0 | 5.2 | 6.3 |
| INDUSTRIAL | 371.5 | 416.7 | 493.6 | 514.6 | 526.4 | 576.1 | 573.2 | 578.7 | 657.9 | 701.3 |
| COMMERCIAL | 90.8 | 96.0 | 102.2 | 111.3 | 120.3 | 122.7 | 137.9 | 152.1 | 162.5 | 205.8 |
| STREET LIGHTING | 16.6 | 14.9 | 15.1 | 17.2 | 17.3 | 17.7 | 19.0 | 19.3 | 20.8 | 22.2 |
| TOTAL ELECTRICITY USE SRI LANKA (GWh) | 619.5 | 675.4 | 772.5 | 817.5 | 839.8 | 905.5 | 933.0 | 971.8 | 1,084.6 | 1,216.1 |
| FUEL USED FOR ELECTRICITY GENERATION | ||||||||||
| FUEL OIL (million litres) | 1.1 | 6.7 | 31.9 | 88.6 | 4.5 | 0.5 | 8.5 | 0.7 | 5.0 | 19.5 |
| COAL | ||||||||||
| RESIDUAL FUEL (million litres) | ||||||||||
| DIESEL (Million litres) | 12.5 | 1.7 | 3.5 | 5.9 | 0.5 | 0.0 | 0.2 | 0.1 | 1.6 | 1.7 |
| NAPHTHA (million litres) | ||||||||||
| TOTAL INSTALLED CAPACITY IN THE GRID (MW) | 265.3 | 265.3 | 265.3 | 265.3 | 362.3 | 362.3 | 402.3 | 402.3 | 402.3 | 402.3 |
| SYSTEM PEAK DEMAND (MW) | 165.1 | 184.6 | 199.8 | 198.8 | 215.6 | 218.9 | 240.3 | 261.0 | 291.4 | 328.9 |
| SYSTEM LOAD FACTOR | 54.3% | 52.5% | 54.0% | 56.2% | 53.6% | 56.3% | 53.8% | 53.2% | 54.3% | 53.0% |
| SYSTEM RESERVE MARGIN | 60.7% | 43.7% | 32.8% | 33.4% | 68.0% | 65.5% | 67.4% | 54.1% | 38.0% | 22.3% |