Corporate Information

Press Release (Mar 12,2011)
Impact to TEPCO's Facilities due to Miyagiken-Oki Earthquake (as of 6 AM)
Below is major impact to TEPCO's facilities due to the Miyagiken-Oki 
Earthquake that occurred yesterday at 2:46PM. 
*new items are underlined 
[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
 Units 1 to 3: shutdown due to earthquake
 Units 4 to 6: outage due to regular inspection
*Evacuation has been instructed by the national government to the local  
residents within 3 km radius of Fukushima Daiichi Nuclear Power Station 
*Measurement of radioactive material (Iodine, etc.) by monitoring car 
indicates increasing value compared to normal level. One of the 
monitoring posts is also indicating higher than normal level. We will 
continue monitoring discharge of radioactive material from exhaust stack 
and discharge canal, etc. 
*We have decided to implement measures to reduce the pressure of the 
reactor containment vessel for those units that cannot confirm certain 
level of water injection by the Reactor Core Isolation Cooling System, 
in order to fully secure safety.
Fukushima Daini Nuclear Power Station: 
 Units 1 to 4: shutdown due to earthquake
Kashiwazaki Kariwa Nuclear Power Station:
 Units 1, 5, 6, 7: normal operation
 Units 2 to 4: outage due to regular inspection
 *There was no shutdown due to the earthquake occurred in the northern 
part of Nagano Prefecture at around 3:58AM today.
 * Survey data on radiation by exhaust stack monitors and monitoring cars 
have indicated no departure from normal level for all nuclear power 
[Thermal Power Station]
Hirono Thermal Power Station Units 2 and 4: shutdown due to earthquake
Hitachinaka Thermal Power Station Unit 1: shutdown due to earthquake
Kashima Thermal Power Station Units 2, 3, 5, 6: shutdown due to earthquake
Chiba Thermal Power Station Unit 2 Axis 1: shutdown due to earthquake
Ohi Thermal Power Station Units 2, 3: shutdown due to earthquake
Goi Thermal Power Station Unit 4: had been shutdown due to earthquake but 
has restarted
Higashi-Ohgishima Thermal Power Station Unit 1: shutdown due to earthquake
[Hydro Power Station]
14 stations in Fukushima Prefecture, 4 stations in Tochigi Prefecture, 
1 station in Gunma Prefecture, 4 stations in Yamanashi Prefecture, 
1 station in Niigata Prefecture, were shutdown due to earthquake. Power 
Stations in Niigata Prefecture have been restored. 
[Transmission System, etc.]
Eight substations shown below have been shutdown:
- Naka Substation
- Shin Motegi Substation
- Joban Substation
- Ibaraki Substation
- Ishioka Substation
- Nishi Mito Substation
- Kawachi Substation
- Haga Substation
- Mito Hokubu Substation
[Blackout in TEPCO's Service Area]
 Total of about 1.24 million households are out of power. 
 Tokyo: 0 
 Kanagawa Pref.: 0 
 Tochigi Pref.: 344,303 
 Chiba Pref.: 216,144 
 Saitama Pref: 0 
 Gunma Pref.: 27 
 Ibaraki Pref: 683,471 
 Yamanashi Pref: 0 
 Shizuoka Pref: 11,819 (east of Fuji River) 
[Supply and Demand Status within TEPCO's Service Area to Secure Stable 
Power Supply]  
Backup supply from Shinshinano Conversion Station: 600MW
Backup supply from Sakuma Conversion Station: 300MW
Backup supply from Higashi Shimizu Conversion Station: 100MW
Because TEPCO's facilities have been seriously damaged, power shortage 
may occur.
TEPCO appreciates customers' cooperation in reducing electricity usage by 
avoiding using unnecessary lighting and electrical equipment.
We are taking all measures to restore power, however, we expect extremely 
difficult situation in power supply for tomorrow as well.
We kindly ask our customers to cooperate with us in reducing usage of 
Please do NOT touch cut-off electric wires. 

* Revised past progress 
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