[sbierwagen]

Using the secret skill of "clicking on the links for the other lists" I discovered that the first TOP500 which had a machine report a power draw was the TOP10 in November 1996: https://top500.org/lists/top500/1996/11/

(498 kW for 229 GFlops. 136,317 times more power draw per flops than the current leader on the Green500.)

[ncmncm]

Yet that tells me exactly nothing about what I asked.