Pampa Energia SA is an Argentina-based company engaged , through its subsidiaries, in the generation, transmission and distribution of electricity. Its segments include generation, transmission, distribution, oil and gas, and holding and others. Its generation segment includes a direct and indirect equity interest in Central Piedra Buena S.A., Central Termica Guemes S.A., Central Termica Loma de la Lata S.A. and Pampa Comercializadora S.A, among others, and investments in compnies in the electricity generation sector. Its transmission segment includes an indirect equity interest through Compania Inversora en Transmision Electrica Citelec S.A. Its distribution segment includes an indirect equity interest in Electricidad Argentina S.A. and Empresa Distribuidora y Comercializadora Norte S.A. Its Oil and gas segment includes a direct interest in Petrolera Pampa S.A. Its 'holding and others' segment includes financial investment operations, among others.