What are the advantages and disadvantages of using single generator and parallel generator?

We're planning to incresase the load capacity of our existing generator from 1250kva to 1750kva. With this plan we have to options to choose from and these are the following: 1. Purchase new generator with a capacity of 1750kva, or 2. By parallel connection of two generators. In this case we need to buy... show more We're planning to incresase the load capacity of our existing generator from 1250kva to 1750kva. With this plan we have to options to choose from and these are the following:
1. Purchase new generator with a capacity of 1750kva, or
2. By parallel connection of two generators. In this case we need to buy additional genset of 500kva and use Synchro Control Panel. Please give us more details on this matter. Thanks.
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