Colombian generator Empresa de Energía del Pacífico (EPSA) is engaged in the generation, distribution and transmission of electric power in the country's Valle de Cauca department. The firm's distribution arm supplies power to over 500,000 residential users across the department. It operates 14 power generation plants, seven transmission substations and 72 distribution substations. In 2011, EPSA opened the 20MW Amaime facility. The following year, the company inaugurated the 19.9MW Alto Tuluá mini-hydro in Valle del Cauca department, which takes EPSA's current installed capacity across Colombia to 960MW. The plant's sister facility, the 19.9MW Bajo Tuluá plant started commercial operations in February, 2015. About projects, the company is currently developing the Cucuana Hydro Plant in Tolima department, that consists in the installation and operation of a run-of-river hydroelectric power plant (without reservoir), with a total installed capacity of 55MW. Founded in 1995 and based in Cali, EPSA is controlled by Colombian power holding group Celsia, through its subsidiary Colener.