| System Peak Demand | ||||||
| ( in MW) | ||||||
| Year | Luzon | Visayas* | Mindanao | Total | ||
| non-coincident peak | ||||||
| 1985 | 2,311 | 256 | 470 | 3,037 | ||
| 1986 | 2,435 | 284 | 484 | 3,203 | ||
| 1987 | 2,592 | 307 | 533 | 3,432 | ||
| 1988 | 2,780 | 333 | 571 | 3,684 | ||
| 1989 | 2,938 | 354 | 617 | 3,909 | ||
| 1990 | 2,973 | 380 | 621 | 3,974 | ||
| 1991 | 3,045 | 410 | 626 | 4,081 | ||
| 1992 | 3,250 | 472 | 573 | 4,295 | ||
| 1993 | 3,473 | 512 | 691 | 4,676 | ||
| 1994 | 3,561 | 557 | 696 | 4,814 | ||
| 1995 | 3,920 | 628 | 780 | 5,328 | ||
| 1996 | 4,306 | 647 | 828 | 5,781 | ||
| 1997 | 4,773 | 725 | 852 | 6,350 | ||
| 1998 | 4,863 | 707 | 868 | 6,438 | ||
| 1999 | 4,986 | 729 | 892 | 6,607 | ||
| 2000 | 5,450 | 749 | 939 | 7,138 | ||
| 2001 | 5,646 | 898 | 953 | 7,497 | ||
| 2002 | 5,823 | 903 | 995 | 7,721 | ||
| 2003 | 6,149 | 995 | 1,131 | 8,275 | ||
| 2004 | 6,323 | 1,025 | 1,177 | 8,525 | ||
| 2005 | 6,443 | 1,037 | 1,149 | 8,629 | ||
| 2006 | 6,466 | 1,066 | 1,228 | 8,760 | ||
| * includes PECO demand | ||||||