That post based on a Japan Times report, May 3, 2011.

Another report-
Japan Times, May 4, 2011

"Utilities Get 68 Ex-bureaucrats Via 'Amakudari'."
The past 50 years have seen 68 former elite bureaucrats parachuting into top positions at the nation's 12 electricity suppliers after retiring from the Ministry, Trade and Industry, including five who landed at TEPCO.
At present, 13 retired career-track METI bureaucrats hold senior positions at electric power companies under the practice of "amakudari" (descent from heaven).
METI, which oversees 10 electric utilities and two electricity wholesalers, investigated the matter after the crisis at TEPCO's Fukushima No. 1 nuclear plant fueled criticism of the practice.
"....creates "cosy, corrupt relations" and "slack supervision."

So much for Japan's perceived efficiency in industry.