A modular electric power plant housed within a container equipped with a transformer for direct connection to an local power distribution system that can supply energy in remote areas is disclosed. The container provides noise control, and includes a set of units that are interconnected and are capable of generating medium-voltage electric power for supplying a local power distribution system. The units include generator units; a cooling unit; a distribution unit and transformer built-in to a tank for collecting spilled oil. The built-in tanks have double walls for collecting contaminated oil/water installed inside the container base, while air inlets for aiding cooling and at least one pair of fans are provided in the cooling unit compartment. The generator units are powered by gas, diesel, or biodiesel automotive engines. Each generator is connected to an exhaust pipe for gases that is installed on the container upper wall.