Corporate Information

Press Release (Mar 31,2011)
Implementation Plan of Rolling Blackouts on and after April 1, 2011
Due to the tight power supply-demand balance, TEPCO has been implementing 
rolling blackouts since Monday, March 14. We sincerely regret causing 
anxiety and inconvenience to our customers and the society. We appreciate 
your cooperation in conserving electricity consumption.
For customers who will be subject to rolling blackouts, please be prepared 
for the announced blackout periods. Also, for the customers who are not 
subject to blackouts, we would appreciate your continuous cooperation in 
reducing electricity usage by turning off unnecessary lightings and 
electrical appliances. 
We will inform the implementation plan of rolling blackouts on and after 
April 1, 2011 as follows:

○ Implementation plan of rolling blackout on April 1 (Fri) 
   On April 1, Friday, no rolling blackout will be implemented in any time 
   periods based on the today's power demand, the weather forecast 
   tomorrow on April 1 and the trend of the power supply. Because of your 
   cooperation in conserving electricity, we can avoid the rolling 
   blackout for tomorrow on April 1. We appreciate your continuous 

○ Implementation plan of rolling blackouts on April 2 (Sat)- April 7 (Thu) 
   Please refer to the appendix for details.

  ● The actual blackout period for each Group is planned to be maximum 
     about 3 hours during the relevant scheduled time period.
  ● Each blackout period for each Group differs every day and starting and 
     ending time of blackout periods may slightly differ.
  ● Depending on the supply-demand balance of the day, planned blackouts 
     may not be carried out. In case the electricity supply-demand balance 
     becomes tighter than expected, we will reconsider the rolling 
     blackout plan and inform you accordingly before we implement the 
     revised plan.
  ● A blackout may occur in the adjacent areas where the planned blackouts 
     are carried out.

  ● In order to prevent fires, please make sure to switch off electric 
     appliances such as hair driers when you leaving home.
  ● Please carefully pay attention to the traffic at the crossings in 
     case the traffic lights are suddenly turned off.
  ● As for the buildings and apartments, please be aware that equipments 
     and facilities such as elevators, automatic doors, automatic locks, 
     and multilevel parking lots will not function. In particular, please 
     avoid using elevators during the scheduled blackouts.

○ Prediction of demand and supply on March 31
     Estimated Demand 33,500 MW (18:00-19:00)
     Supply Capacity  37,500 MW

○ Prediction of demand and supply on April 1
     Estimated Demand 33,500 MW (18:00-19:00)
     Supply Capacity  37,500 MW

* Prediction of demand
  According to the weather forecast, the temperature tomorrow on April 1 
  will be normal. We assume the estimated peak demand on April 1 will be 
  33,500MW, equal to the estimated demand today on March 31.
* Estimated demand and supply capacity may change depending on the 
  situation of the day. 

Appendix:Weekly Rolling Blackout Tentative Plan from Apr 1(Fri) to April 
         7(Thu)(PDF 60.2KB)
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