My sony xr-77a80j released in 2021 and at least sucks down 25W in Standby with Chromecast support on. I think it was more like 28W last I measured.
Running the machine in standbye for 8 and a half hours and testing with a Kasa device consumed 32 wh of power.
According to the app I am using it would cost about 6 dollars a year to run this on standbye at .17 cents per Kilowatt hour.
That said I do not use Homekit. Someone in the Braviam forum said enabling Homekit and allowing Homekit to turn on the TV causes a huge power draw.