Nacelle cover for a wind turbine

A method of constructing a nacelle cover for a wind turbine, wherein the nacelle cover comprises a roof, opposite sidewalls and a floor each comprised of a polymer composite material and assembled together to form a composite material elongate housing defining an interior space for containing at least one machinery components of the wind turbine, the housing having a front end for mounting to a tower of the wind turbine, and an opposite rear end, wherein the at least one machinery component of the wind turbine is mounted on the housing at a position laterally spaced from the tower in a longitudinal direction along the housing, and the housing comprises a structural tube which functions as a cantilever beam that is vertically displaced by a load of the at least one machinery component mounted thereon, the method comprising steps of:

• installing the nacelle cover by mounting the front end of the housing to the tower of the wind turbine in an unloaded state wherein the rear end is higher as compared to the front end, and installing the at least one machinery component on the housing in a loaded state wherein the rear end is lowered compared to the front end due to flexural elastic deformation of the structural tube in the loaded state.