Operation Mato Grosso In line with the agreement signed in November August 2019 the company Terna 4 Chacas was incorporated - which is 99.99% owned by Terna Plus S.r.l. with the remaining stake held by Terna Chile S.p.A. - with responsibility for supervision, engineering and supply of goods and services relating to the construction of the power line envisaged in the “Operation Mato Grosso” project.