ISA CTEEP Investment and Infrastructure Update

isa CTEEP INTERCONEXIÓN ELÉTRICA, ISAS.A.E.S.P. Central America Transmission Telecom Ecuador Telecom Peru 21% of net income Transmission Telecom Chile 18% of net income Transmission Highway concessions Telecom Solid Presence in Latin America: 8 countries, 4 sectors, 40 companies Argentina Telecom Colombia 25% of net income Transmission Telecom Highway concessions Real Time Systems Brazil 34% of net income Transmission Telecom Bolivia Transmission ■ ISA CTEEP represents 31% of ISA's¹ net income ■ 2017 Net Income Breakdown: ■ Transmission: 77.2% ■ The largest energy transmission company in Colombia and Peru, with 70% of capacity in each market 2nd largest player in Chile with 18% of market share ■ 2nd largest player in Brazil with investments in ISA CTEEP and TAESA Highway concessions: 22.0% ■ Real Time Systems: 0.7% ■ Telecom: 0.1% ■ Benchmark player in sector ■ 44,200 km of transmission lines ■ 87,100 MVA of transformation capacity ■ 907 km of highways ■ Controlled by the Colombian government ■ Recognition in Corporate Governance Market Cap: USD 5.5 billion² Notes: 1 Considers 2017 IFRS Results adjusted by participation | 2 On 06/30/2018 8

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