When the firm Giv Energy announced it was going into administration - I decided it was time to figure out how to keep a backed up copy of all the data that was stored within it's cloud infrastructure. I wanted to not only keep hold of my data beyond the life of any associated company - but wanted flexibility to search and analyse my data in a way that is only possible with self hosting.
More docs here: https://www.newaytech.co.uk/home-energy-data-self-hosted