An apparatus for selectively amplifying wind speed adjacent a turbine rotor includes a first deflection panel, having a curved front profile for selective placement laterally on a first side of turbine rotor in a working configuration. A second deflection panel has a curved front profile for selective placement laterally on a second side of the turbine rotor, laterally opposite the first side, in a working configuration. The first and second deflection panels are both configured to amplify wind speed adjacent the turbine rotor when in the working configuration, and to have minimal effect upon the wind speed adjacent the turbine rotor when in a stowed configuration. A method of selectively amplifying wind speed adjacent a turbine rotor is also described.