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Press Release (Mar 24,2011)
Implementation Plan of Rolling Blackouts on and after March 25, 2011
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 25, 2011 as follows. 

○Implementation plan of rolling blackout on March 25 (Fri.)
Considering today's electricity supply-demand and tomorrow's weather, 
regional group and time periods for the planned blackout are as follows.

  Group 3  6:20-10:00
  Group 4  9:20-13:00
  Group 5 12:20-16:00
  Group 3 13:50-17:30
  Group 1 15:20-19:00
  Group 4 16:50-20:30
                     ···Rolling blackout will not be implemented.
  Group 2 18:20-22:00
                     ···The necessity of the rolling blackouts 
                         will be judged depending on the supply-demand 
                         balance, and will be informed by 2 hours
                         before the start of blackouts.

 ●The actual blackout period for each group is planned to be maximum of 
   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 Saturday, March 26 to
Thursday, March 31
Please refer to the "exhibit" for detailed plan. 
 ●The actual blackout period for each group is planned to be maximum 
   of 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.
 ●As for the building and apartment, please be aware that equipment 
   and facility such as elevator, automatic door, automatic lock, and 
   multilevel parking lot will not function. In particular, please avoid 
   using elevators not to be trapped during the blackout.

<Reference>
○Prediction of demand and supply on March 24
       Estimated Demand   38,500 MW (18:00-19:00)
       Supply Capacity    38,500 MW

○Prediction of demand and supply on March 25
       Estimated Demand   38,500 MW (18:00-19:00)
       Supply Capacity    38,500 MW

*Prediction of demand
 According to the weather forecast, the temperature will be higher than 
 that of today. However, estimated temperature in the evening will be 
 lower due to rain, so we assume estimated peak demand on March 25 will 
 be 38,500MW,which is same as today.
*Estimated demand and supply capacity may change depending on the 
 situation of the day. 

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