Few months old article
The PARAM supercomputing with petaflop speed needs a separate power station as it requires 20 mw to run it,” [Darbari] said
C-Dac Reaching for a Petaflop by 2012 | insideHPC.com
and it will hold the title for the most ridiculous HPC ever built too.
the current 1st and 2nd fastest HPC only need around 2~3 megawatts power to run at top speed.