Afinia, a subsidiary of EPM, invested more than $493 billion in the electrical infrastructure of the Cesar department between 2020 and 2026 to expand capacity and improve reliability. ^[1] Starting September 1, 2026, Energía Atenea will assume the provision of energy services in 19 municipalities of Cesar, 10 in southern Bolívar, and 6 in Magdalena. ^[2] Energía Atenea, a subsidiary of Grupo EPM, began operations in 19 municipalities across the Colombian departments of Cesar, Bolívar, and Magdalena after 18 months of preparation. ^[3] Energía Atenea, a new subsidiary of Grupo EPM, began operating on September 1, 2026, in 35 municipalities previously served by Afinia. ^[4] The average duration of power interruptions in Cesar, measured by the SAIDI indicator, decreased from 87 hours in 2019 to 67 hours in 2025, representing a reduction of nearly 23%. ^[5] Energía Atenea's initial operational focus was the department of Cesar with investments exceeding $493.000 million pesos, though its scope expanded to include Bolívar and Magdalena. ^[6] The new company will assume the distribution and commercialization of electricity in these areas, replacing the operations previously handled by Afinia. ^[7] The transition to Energía Atenea was driven by a deficit exceeding one trillion pesos that Afinia faced due to energy losses and the need for network modernization. ^[8] Grupo EPM stated that more than 40% of first-stratum clients of Afinia do not pay for the energy they consume. ^[9] Grupo EPM stated that the market split was an strategy to address the complex financial situation in the Caribbean energy sector. ^[10]