Plant for the production of electric power and method for operating said plant

A plant (1) for the production of electric power is provided with: - a compressor (3) comprising an air intake (12), an inlet stage (13), which has a plurality of inlet adjustable stator vanes (18), and an output stage (14); - an anti-icing device (8) provided with: a re-circulating system (20), configured to draw air from the output stage (14) of the compressor (3) and to inject it into an injection zone (17) of the air intake (12) of the compressor (3); a control unit (21) configured to selectively activate the re-circulating system (20) on the basis of at least a first parameter (IGV POS ) correlated to the position of the inlet adjustable stator vanes (18).