Solar radiance input regarding in simulink environment

Hai Good Evening to all Prof. My research area is interconnected power systemwith renewable energy sources. In this regard I collect literature but I can't able to find solar radiance is given an input in matlab simulink environment. At the same time how I give wind velocity as input in wind power system. (find the attachment for ur reference)

Which block I need to cosider to give solar / wind system input.

Kindly support in this regard.

Jagatheesan.K