PREPA has a modern electric power system that serves the entire main
island of Puerto Rico and its two adjacent islands Vieques and
Culebra. The system generates, transmits and distributes electricity
to 1,449,211 clients.
Electric energy is produced by five main power plants: Costa Sur,
Aguirre, San Juan, Palo Seco and Cambalache.
Sixty-eight percent (68%) of the total energy production is fuel
oil-based; 15% natural gas (LNG); 15% coal; and approximately 2%
Transmission system is comprised of 2,416 miles of 230 kV
transmission lines, 115 kV and 38 kV sub transmission lines – with
175 transmission centers.
Distribution lines amount to approximately 28,952 aerial miles and
1,723 underground miles. The system has 334 substations and 27