Electricity shut-down was carried out as scheduled from 6:40 to 10 PM.
I was at home, and Katya cooked quickly, and while we were eating, the electricity stopped. We had dinner under the candle light again.
The first run of the scheduled blackouts was somewhat interesting to see how the society goes, but the second run became annoying.
I fell into sleep, because I was working late (actually till morning) last night (or this morning). While I was sleeping, Katya got really bored.
The electricity shut-down is scheduled till the end of April, but it can start in July again. They could restart in winter. This should give damage on the Japanese economy.