Record power consumption - bypass purge

Hey there I have SDM630 which is connected to my system

which way is the best to keep and visualize power consumption records for at least 1-2 years?

today my purge settings were defined for 2 days ( to avoid overflow for the SD card)

Which way is the best to do that

Use the Energy Dashboard. It uses LTS (long term statistics) which are never purged from the recorder database.