In its beginning, Asesorías & Construcciones S.A. participated in the construction of the 4 largest thermoelectrical plants of the country, at that time, as they were Termoguajira I (1983) and II(1986) with 157.000 Kw of capacity each, for Mistubishi Heavy Industries (Japan); Termocartagena III (1978) and Termobarranquilla IV (1979), with 69.000 Kw, of capacity each.