Someone suggested take the magnet, and place it onto the glass front of the meter until it sticks(magnetically

someone suggested me to take a neodymium supermagnet and place it onto the glass front of the mechanical electric meter until it sticks(magnetically). doing so will slow down the revolving disc in the meter and thus i can reduce my monthly electricity bill. will this method work? how to stick the neodymium magnet to the front glass? please guide me.