Mauwille City is a little North of the port city Slateport and centered itself arround the Hoenn mainland. Mauwille is the city thats constantly ambundant with Electricty and power due to New Mauwille Powerplant. Whats even more shocking is the Gym Leader who uses the Shocking electric pokemon which possess quite a problem if you find your pokemon conductible to electricity. Even worse if you find yourself in a parazyling Jam victory isnt as certain so best to remain grounded.