If You Shag With The Lights On The Electricity Board Will Judge You
The Europe-wide rollout of ‘smart metering systems’ enables massive collection of personal information from European households, thus far unprecedented in the energy sector. The potential intrusiveness of collection is increased by the fact that data are collected, which may infer information about domestic activities: data may track what members of a household do within the privacy of their own homes.
And they give the power supplier the power to "tune" your consumption by turning on and off "smart" appliances.
Going off grid looks attractive.