No, it's not.
Microwaves used in your oven are around 2.45 GHz. The frequency is chosen because it's a peak in the absorption vs. frequency graph for water molecules. Those waves are designed to "jiggle" water and heat it.
Major electric meter companies: Landis & Gyr, GE (no longer in the home meter market), SmartSync, Itron and Elster ALL use 902-928 MHz. I know because I work for one of them (not going to tell you which one).
That is not microwave. That is UHF.
And by the way, all of our meters put out less than 1 Watt at 902-928 MHz (most are less than 1/4 Watt). Amateur radio operators are LEGALLY allowed to transmit 1,500 Watts on 902-928 MHz, aimed right at your house.
And believe me, I would do it.
Quick question for the backwoods engineer - I haven’t been able to dig up any information on this in my last search. On the old electro-mechanical watthour meter, you could read your instantaneous demand by timing the speed of the disk rotation and plugging the time (in seconds) along with a couple of characteristics from the meter (like the watthour constant Kh) and determine your load in watts. I now have an electronic meter on the house and, as you would guess, it has no disk so I can’t time its rotation to determine load.
It’s not that important, but I am curious as to how a user might determine their instantanious demand on one of these.