These investments, and its plans to enter the gas pipeline market, make ISA a specialist provider of linear infrastructures, which, despite a presence in different sectors, operate under a similar business model, involving major initial investments, expropriation of many land plots and regulated income that is constant in the long-term. They have grown rapidly, often taking advantage of the departure of European or United States firms that abandoned their assets in the region. While ISA has focused its expansion in the transmission segment and other linear infrastructures, EPM has targeted the more open markets of Central America, where it has consolidated a robust position in the distribution segment.