People don't realize that the power company also knows a lot about your activities - how many lights you have on, computers, fridge, doing laundry or using dishwasher? Etc.. They can have a pretty good layout of your daily activities at home.
The old-style meters didn't give the power company this data; they were read only monthly, not continually. The newer wireless ones do give full-time total watt-hour data.
However, the sole justifications for any of that is billing and planning of capacity. It is not necessary to those ends to have individual applicances report to any outside party (as the "smart home" fans keep enthusing about), and people can opt out of things like Nest thermostats and "smart" TVs.
