These families can save up to 2,500 euros by changing energy contract: this is how you know if you are among them | To spare

2,505 euros. This is how much some families can save on an annual basis today by switching from an expensive energy contract from the past to a new, much cheaper rate. To make comparisons easier, the VREG wants to oblige energy suppliers to put a unique identification code on every energy invoice. How does the system work correctly? How do you know if your contract is so much more expensive than the current offer? And what do you have to do for that?