Due to the power supply-demand balance, TEPCO has been implementing 
rolling blackout 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 would like to inform the implementation plan of rolling blackouts 
on and after March 22, 2011 as follows. 

○Implementation plan of rolling blackout on March 22 (Tue)
Considering today's electricity supply-demand and tomorrow's weather, 
regional group and time periods for the planned blackout are as 
follows.

   Group 5  6:20-10:00
                       ···Rolling blackout will not be implemented

   Group 1  9:20-13:00
   Group 2 12:20-16:00
   Group 3 15:20-19:00
   Group 4 18:20-22:00
                       ···Rolling blackout will be implemented.

   Group 5 13:50-17:30
   Group 1 16:50-20:30
                       ···The necessity of the rolling blackouts will 
                          be judged depending on the supply-demand 
                          balance and will be informed 2 hours before
                          the start of blackouts.


 ●The actual blackout period for each group is planned to be maximum 
   about 3 hours during the relevant scheduled time period.
 ●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.

○Implementation plan of rolling blackouts from Wednesday, March 23 to
Monday, March 28
Please refer to the "exhibit" for detailed plan. 
 ●The actual blackout period for each group is planned to be maximum 
   about 3 hours during the relevant scheduled time period.
 ●Starting and ending time of blackout periods will slightly differ 
   day by day.
 ●Depending on the supply-demand balance hereafter, planned blackouts 
   may not be carried out. Moreover, 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.

[Improvement in implementing planned blackouts]
 ●In principle, we will implement the planned blackouts based on the 
   current manner. However, we do realize that there is room for 
   improvement. Therefore, we will continue to consider and improve 
   implementation manners from the customers' point of view.

‹Reference>
○Prediction of demand and supply on March 21
    Estimated Demand   34,000 MW (18:00-19:00)
    Supply Capacity    35,500 MW

○Prediction of demand and supply on March 22
    Estimated Demand   37,000 MW (18:00-19:00)
    Supply Capacity    35,500 MW

attachment1:Appointed Areas by Group(PDF 52.1KB)
attachment2:Weekly Rolling Blackout Plan(PDF 19.6KB)