Tokyo Electric Power Company is being supplied with electricity from self-power-generating businesses as demand soars amid the cold spell in Japan.
TEPCO Power Grid, which is in charge of energy transmission and delivery, says the unexpected huge demand for electricity for heaters has led to fears that liquefied natural gas for thermal power generation will run out.
The company sought cooperation from steel and chemical manufacturers that have their own generators and has been receiving their electricity since Tuesday.
TEPCO was supplied with electricity by Chubu Electric Power and Hokuriku Electric Power on Sunday and Monday.
TEPCO Power Grid says demand is expected to surge on Thursday morning, but supplies are likely to remain stable.
The last time TEPCO sought electricity from manufacturers was after the earthquake and tsunami disaster in northeastern Japan in 2011.