TEPCO has been implementing the rolling blackout since March 14 due to the
tightening power supply-demand balance caused by the Tohoku-Taiheiyou-Oki
Earthquake. We sincerely regret causing anxiety and inconvenience to our
customers and the society. We appreciate your cooperation in conserving
As previously informed on March 22nd, we have recently divided the area
subject to the rolling blackout into 5 groups and announced the schedule
of blackout based on such groups. Hereafter from March 26th, we will
ramify each existing group further into 5 sub groups based on prefecture.
This is to enable our customers to predict the blackout more accurately as
the blackout is currently implemented within the group entirely and
partially depending on the actual demand-supply balance.
This improvement is to enable our customers to figure out the areas of
rolling blackout more easily, therefore the concept of the rolling
blackout, the existing groups and the period of blackout will remain
Sub groups take turn for the blackout so that the unequal treatment among
customers will be avoided.
Please refer to the attachment on our website for the detailed region of
[Ramification of groups]
TEPCO plans to introduce additional measures to improve our operation such
as the following example for the better announcement of blackout forecast.
(actual introduction will be determined after successfully installing the
group ramification. )
[forecast mark: example]
TEPCO will continue to do its utmost to secure the stable supply of
electricity. We apology for the inconvenience caused and appreciate your
continuous cooperation in conservation of electricity and your
understanding for the rolling blackout.
attachment1:Datail of rollig blackout area for each group(PDF 46.6KB)
attachment2:Rolling blackout which segmentalizes areas(image)(PDF 69.7KB)