The basic functionalities (free version) of the app supports up to 12 months of data per meter. This means that when your 13th month starts, your 1st month will automatically be deleted etc.
With Energy+ you can view/save your data for as long as you want. Go to Settings > Energy+ to enable Energy+ in the app or view the Energy+ page to learn about the extra features you can unlock.
How long can I view or save my meter data?
Updated over a year ago