Energisa S.A., through its subsidiaries, operates as an energy distribution company in Brazil. The company also provides operating and maintenance services related to electricity distribution, generation, commission, preparation, and remote and local operations. It also offers electrical and mechanical maintenance of plants, substations, transmission lines, and facilities. The company provides construction, operation, maintenance, and services related to electricity generation and distribution, and personal services for electricity consumers, and aerial surveying services for supporting companies, oil pipelines, and reforestation engineering works.