There was a report recently that Facebook users have their data sold to 1000-5000 companies, and Facebook takes input from up to 100k companies when compiling data on people.

Supermarkets are also into the data game, exploiting the gold mine of data that is shopper loyalty cards.

Smart TVs are in the data game, selling details of what you’re watching on to other people.

Cars are recording visuals, audio, telemetry, and selling that on.

I think it’s reasonable to assume that energy companies are selling the data they’re collecting about you onto data brokers (aka shady companies and/or criminal organisations)