Due to the tight power supply-demand balance, TEPCO has been implementing 
rolling blackouts since March 14 (Mon). 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 7, 2011 as follows:

○ Implementation plan of rolling blackout from April 7 (Thu) to April
   10 (Sun)
On April 7 (Thu), no rolling blackout will be implemented in any time 
periods or any regional groups based on today's power demand, weather 
forecast and trend of power demand for tomorrow.
Also from April 8 (Fri) to April 10 (Sun), no rolling blackout will be 
implemented in any time periods or any regional groups based on recent 
trend of power demand and supply.
We thank you for your cooperation on conserving electricity, which 
enabled us to avoid rolling blackout from tomorrow until April 10.

○ Implementation plan of rolling blackouts from April 11 (Mon) to April
   13 (Wed)
Please refer to the appendix for details.

   ● The actual blackout period for each Group is planned to be up to 
      approximately 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.

[Others]
   ● 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.

<Reference>
○ Prediction of demand and supply from April 6 (Wed) to April 10 (Sun)


* Prediction of demand
- April 7: Since the temperature is forecasted to be higher than today, 
  we assume the peak demand to be 33,000MW, which is lower than today.
- April 8: The temperature is forecasted to be similar to April 7, 
  however, the weather may be slightly worse, therefore we assume the 
  peak demand to be 33,500MW.
- April 9: Though the weather may turn bad, since it is a Saturday, we 
  assume the peak demand to be 33,500MW, which is similar to April 8.
- April 10: The temperature will be higher than April 9 and since it is 
  a Sunday, we assume the peak demand to be 31,500MW, which is lower 
  than April 9.

* Estimated demand and supply capacity may change depending on the 
  situation of the day.

Appendix: Weekly Rolling Blackout Tentative Plan from April 7(Thu)to 
          April 13(Wed) (PDF 16.4KB)