Home security problem
this they never talk about.
If my lekky usage is uploaded somewhere every 15 minutes then it will be easy for someone to make a guess if I am at home or not. All it takes is a cash strapped sysadmin to write a query that looks for homes where usage dropped sharply 2-3 days ago, pass the addresses on to his mate Burglar Bill as candidates for people away on holiday.
Wake me up when these things have a householder option to delay the sending of usage by a fortnight.