Project that includes the series compensation in 50 % of the three 765 kV lines from Malena in the San Gerónimo Substation, and the compensation of the three 765 kV lines from San Gerónimo in the substations La Arenosa (40 %), La Horqueta (50 %) and Sur (50 %). The scope includes the studies, engineering, procurement, 765 kV series compensation banks supply, switching equipment, control and protection systems, and integration to the existing substations. Project for CORPOELEC in Consortium with the company LAECA.