Please note that there is a big difference between the installed MW of variable renewable sources, and the their contribution in the energy production (MWh). With conventional sources where the installed capacities indicate the maximum possible fully controllable and fully dispatchable energy production. On the oher hand, the installed capacity of variable renewable sources (such as wind, and solar) produce energy values according to the renewable resource energy. Please consider to read the relevant chapters in the following books:
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Book Dynamic Security of Interconnected Electric Power Systems - ...
Book Dynamic Security of Interconnected Electric Power Systems - ...
I am not sure that accurate worldwide energy production values are well reported; however, the installed MWs are usually available.