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During this decade,
the Palo Seco
Thermoelectric Plant in Cataño and
the one at Costa Sur
in Guayanilla were also built.
These big centrals
were built to satisfy Puerto Rico's increasing
demand as a result of the industrialization program,
which also brought about the expansion of commerce
and urban centers.
In 1963, the Puerto
Rico Legislative Assembly approved a law that
transferred and integrated the Vieques electric
system to PRWRA.
Also in 1963, the
PRWRA
installed a 13,000 watt cable, approximately 10
miles long, to interconnect the electric systems of
Vieques and the Big Island of Puerto Rico.
In 1964 the PRWRA
carried out the first experiments to diversify the
Island's power sources, with the creation in Rincón
of the first experimental
Nuclear Central in Latin
América, the Central
Bonus.
During the 70's the
PRWRA
went through the last expansion stage of its power
generation system. In 1974, the
Aguirre Thermoelectric
Plant was inaugurated. Later, the
Combined Cycle Plant
was constructed. At that time, petroleum and its
derivatives were the power source responsible for
98% of the electricity used on the island, while
water represented a mere 2%.
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