Peru's private investment promotion agency, Proinversion, rejected on 28 January 2014 the private initiative to extend Lima's metro Line 1.

The private initiative would have involved the extension of the metro line 4Km to the south of the city. The new line would run from Villa El Salvador to Separadora Industrial avenue. 

The project would have beeen developed on a design, build, finance, operation and maintenance (DBFOM) basis. The contract would also involve the provision of electromechanical equipment and rolling stock. The contract period would be 26 years.

In December 2014 the Inter-American Development Bank (IDB) approved a package of loans for US$750 million for the Lima's second metro line. The total project investment is estimated at US$5.8 billion. It involves the financing, design, construction, provision of electromechanical equipment and rolling stock, operation and maintenance of the line for 35 years. The scheme invludes a 27 km east-west metro line, 27 stations and an 8 km airport branch with 8 stations.

In September 2014 Proinversion selected the consortium led by Ingerop Conseil ET Ingenierie as the preferred bidder to carry out the pre-investment studies of Lima metro line 3. The initial design of the third corridor spans seven districts, namely, Surco, Miraflores, San Isidro, Lima Cercado (Downtown Lima), Rimac, Los Olivos, and Comas.