Using the Goro Goro no Mi, Enel could enslave an entire country with ease. It can destroy towns and cities without much trouble and, if pushed to the extreme, it can even erase entire islands, which just goes to show the devastating powers it possesses. The destructive power offered by this fruit is absolutely immense. Throughout the entirety of the Skypiea arc, fans got a proper look at what this Devil Fruit is capable of.
It doesn't have many weaknesses and the power that it possesses is enough to destroy islands with ease. In fact, this Devil Fruit is believed to be one of the few invincible Devil Fruits in the world of One Piece.
The power of this Devil Fruit is absolutely immense and there are only a handful of Devil Fruits capable of holding their own against it. The user can produce a 200 million volt output attack or something much lower than that. The voltage of electricity produced using this Devil Fruit depends entirely on the user.
The user can also produce lightning as well as manipulate it according to their will. As fans know, this Devil Fruit is of the Logia type and that means it allows the user to become lightning itself. The One Piece magazine also goes into great detail about the abilities of this fruit.