GENERATOR SET

A generator set (100; 200) comprises a casing (1) that comprises a bottom wall (13) and at least one lateral wall (10, 11) that define a compartment (V) that houses an internal combustion engine and an alternator; said casing (1) comprising slots (2) obtained in said at least one lateral wall (10, 11) to put the compartment (V) of the casing in communication with the exterior; said bottom wall (13) and said at least one lateral wall (10, 11) of the casing comprising an internal surface directed towards the compartment (V) of the casing (1) and covered with sound-absorbing panels with thickness higher than or equal to 6 cm.