When looking into making the change onto a smart meter, the most commonly asked question is will this actually save me money? Now, the simple answer to this is no. A smart meter alone will not do anything to save you money on your bills. You need to pair the smart meter with your own mentality to be able to save money on your bills.
Essentially, your smart meter just replaces your meter that is already there. The only difference is that this meter will clearly show you your usage for each of your electricity and gas bills. The idea of this is that you will see how much you are spending on your bills and actively look for ways that you can decrease the amount you are spending. It will not work on its own to decrease the amount you are spending, but it should put your mind in a place where you actively attempt to save money on your bills by attempting to make your usage spending lower.