The "electric power supply and demand tight warning" issued within the TEPCO jurisdiction was canceled on the morning of the 23rd.
"Pumped storage power generation" played a major role in surpassing the tight supply and demand of electricity.
Within the jurisdiction of TEPCO, the supply and demand of electric power became extremely severe due to the suspension of operation of some thermal power plants and the decrease in temperature, and the government issued the "power supply and demand tight warning" for the first time.
"Pumped storage power generation" was used by TEPCO to secure the power supply capacity.
Pumped storage power generation is a method of pumping water from a dam to a high place and using the flow of water when flowing it to a low place to generate electricity.
TEPCO received a tight warning and pumped water to prepare for the power supply after the holidays.
It was calculated that if we could secure the amount of power generation equivalent to the daily power consumption of 10 million ordinary households and use it in a well-balanced manner from morning to 10 pm, we would be able to overcome the tension.
However, at noon, the remaining power generation target was 79% of the total amount that had been secured, but in reality it was 71%, which was 8% more.
It was consuming more electricity than expected, and if we didn't reduce it, the pumped storage power would run out earlier than 10 pm, which could lead to a power outage in the worst case.
Minister of Economy, Trade and Industry Hagiuda held an urgent press conference before 3:00 pm and strongly requested further power saving. Exceeded.
TEPCO explains that while the power supply capacity of thermal power generation is limited, "pumped storage power generation," which is positioned as a power control valve, played a major role in solving the severe supply and demand of power.