Venezuela-based Corporación Electrica Nacional, S.A (Corpoelec) has invited bids for the modernisation and extension of the 400 kV Guri A substation, construction of the 230/34.5/13.8 kV patio at the same substation; and modernisation of transmission lines associated with powerhouse I located at the Central Hidroeléctrica Simon Bolivar (also known as Guri Dam).

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