Due to the Tohoku-Chihou-Taiheiyo-Oki Earthquake occurred on March 11, 
the power supply-demand balance within our service area has been very 
critical. As such, we have decided to implement rolling blackout on 
and after March 15, which was started on March 14. We sincerely regret 
to cause the anxiety and inconvenience to our customers and the society.
We will continuously make every effort to restore stable power supply 
as soon as possible. 

○Implementation plan of rolling blackout on Tue, March 15
  Regional block and time periods planned to have rolling blackout are as 
  follows. The actual extension of blackout for each block are planned to 
  be approximately 3 hours each. 
  For customers who will be subject to rolling blackout, please be prepared 
  for the announced blackout periods. Also for customers who are not 
  subject to blackouts, TEPCO appreciates your continuous cooperation in 
  reducing electricity usage by avoiding using unnecessary lighting and 
  electrical equipment. 

[Expected rolling blackout regions]
Block 3: 6:20 - 10:00 
Block 4: 9:20 - 13:00 
Block 5: 12:20 - 16:00 
Block 1: 15:20 - 19:00 
Block 2: 18:20 - 22:00 

●Please refer to the attachment1 for the detailed region of the blocks.
●Starting and ending time of blackout periods may slightly differ. 
●Depending on supply and demand conditions on the actual days, 
  planned blackouts may not been carried out or may be implemented at 
  times which were not previously announced. 
●The website of TEPCO provides information including "Chome". 
  http://www.tepco.co.jp/index-j.html

○Implementation plan of rolling blackout from Wed, March 16 to Fri, March 18
  Please refer to the attachment2 for the detailed plan. 

●Please refer to the attachment1 for the detailed region of the blocks. 
●The rolling blackout is scheduled in the same order every day, but 
  time of blackout periods may be subject to change. 
●Starting and ending time of blackout periods may slightly differ. 
●Depending on supply and demand conditions on the actual days, 
  planned blackouts may not been carried out or may be implemented at times which 
  were not previously announced. 

Appendices:

Expected Rolling Blackout Areas <March 15, 2011 6:20-10:00>(PDF 13.7KB)
Expected Rolling Blackout Areas <March 15, 2011 9:20-13:00>(PDF 15.4KB)
Expected Rolling Blackout Areas <March 15, 2011 12:20-16:00>(PDF 15.6KB)
Expected Rolling Blackout Areas <March 15, 2011 15:20-19:00>(PDF 13.2KB)
Expected Rolling Blackout Areas <March 15, 2011 18:20-22:00>(PDF 15.0KB)