Electric Energy. Energy efficiency, rational use of energy and complementary energies. About 70% of the energy in Venezuela is hydroelectric, which implies that the country is exceptionally clean in its energy matrix but at the same time highly vulnerable to droughts. Energy efficiency and the rational use of energy and the promotion of complementary energies have been strengthened as a policy with the creation of the Office of vice Minister of New Sources and Rational Use of Electric Energy. Energy efficiency and the rational use of energy and the promotion of complementary energies have been strengthened as a policy with the creation of the Office of vice Minister of New Sources and Rational Use of Electric Energy.