Interconnection Electric SA ESP (ISA) is a Colombia-based company engaged in the transmission of electric power. The Company’s business is structured into five divisions: Electric Energy Transport, operating a network of high-voltage transmission circuits in Colombia, Peru, Bolivia and Brazil; Smart Management of Real Time Systems, which manages the facilities of the National Interconnected System (SIN), Commercial Settlement System (SIC), Wholesale Energy Market (MEN) and International Electricity Transactions (TIE); Construction of Infrastructure Projects, which include the development of high-voltage and fiber-optic transmission networks; Telecommunications Transport, which is involved in the leasing of the Company’s transmission networks to other operators, and Road Concessions, which focuses on the construction, management and exploitation of highways, toll roads and other related infrastructure. On September 30, 2013, the Company established a subsidiary, Intercolombia SA ESP.