The difference between a Smart Pay As You Go meter and a regular Pay As You Go meter is: 

1. You don’t require a new meter to be installed at your property to avail of Smart Pay As You Go but for Non-Smart Pay As You Go you'll require a new meter to be installed at your property. 
2. For Smart Pay As You Go any payments you make are automatically sent to your smart meter. This means that you don’t have to manually input a top-up code into your meter, which is required for Non-Smart Pay As You Go.  

SAFETY WARNING: As the disconnection and reconnection of electricity may now be performed remotely, it’s essential that you ensure your home, office or site is always treated as live.