You don't get it. Let me explain it to you. Let's say I have used 1345 KW when the power outage occurs. When the power is restored the meter instead of showing 1345 shows blinking 0000. Do you think the electric company will charge me for 0000kw or will they guesstimate what I have used and bill me for 1955? How can I prove to them that I have only used 1345? Take daily photos? power outages happen unexpectedly.
PROVE IT DOES THAT.
Ours don't.
Our competitors' don't.
The US government wouldn't allow it.
Nor would the power utility associations.
Battery backup for electronic metering has been around at least since 1980 (as far back as I go with this stuff).
How dumb do you think engineers are?