My lord... this thing probably requires the power grid to do a generation dispatch when you turn it on.

When I was a kid I lived down in Southeastern Kentucky (Somerset) which gets a lot of its power from the local lake via hydro. My grandfather had this large (not this big but big) tube TV, the old wooden case kind. When you turned it on it'd take about ten seconds in which you could hear tube heaters tinkling, followed by a "grrrnnnnnzzzzz" sound as the tube came to life. I remember my uncle joking that the lake level started visibly falling.

Between LCDs/etc. and LED lighting, the amount of efficiency improvement we've done in home electronics is wild. I can now put my hand right on an equivalent to 100W light output light bulb and it's just... warm.

I had the 36" widescreen and I don't remember any issue with the power requirements, but I just calculated the screen area difference. The 43" 4:3 is 60% more area and the 45" 4:3 is 75% more area, so they are vastly bigger screens.