He'd been trying to signal to so great a distance that tens of thousands of kilowatts were required.
"Long Ago, Far Away"
William Fitzgerald Jenkins AKA Murray Leinster
If the transformer is a small one, there is no difficulty in extinguishing this arc by withdrawing the secondary terminals, but if the transformer is a large one, say, of ten or twenty kilowatts, dangerous effects are apt to ensue when such an experiment is tried.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
His answer indicated that approximately a total of two billion kilowatts were available.
"Invaders from the Infinite"
John Wood Campbell