The Tokyo Electric Power Company, Inc. (TEPCO) has started to
generate at the Shiobara Power Station (Capacity: 900MW, Pumped
storage hydroelectric power station*2 )as the emergency / interim
measures*1 to be taken when the balance of demand and supply is tight.

The result of generating at the Shiobara Power Station

The period of generating :August 22th 2007  1:12PM-7:09PM
The amount of power output : 1,761MWh
The maximum capacity (estimated figure) : 300MW

*1 Emergency / interim measures to be taken when the balance of
demand and supply is tight.
Temporary permission for the use of river water On Jul. 30, in
accordance with Article 23 of the River Law (permission for use of
river water), TEPCO received a permission for the use of water for
a limited period of July 30 to September 7, 2007 from the Kanto
Regional Development Bureau of the Ministry of Land, Infrastructure
and Transport.

*2 Pumped storage hydroelectric power station
Because such power stations possess an outstanding characteristic
of taking only a few minutes to reach full output after starting
and requiring only seconds to adjust output, they can quickly adjust
to sudden changes in electricity demand.
This enables them to play a major role in supplying power in the
afternoon when demand is highest.