Corporate Information

Press Release (Mar 12,2011)
Impact to TEPCO's Facilities due to Miyagiken-Oki Earthquake (as of 4AM)
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
*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. 
[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 1.62 million households are out of power. 
 Tokyo: 0 
 Kanagawa Pref.: 24,904 
 Tochigi Pref.: 458,016 
 Chiba Pref.: 228,824 
 Saitama Pref: 34,346 
 Gunma Pref.: 65,668 
 Ibaraki Pref: 695,792 
 Yamanashi Pref: 103,496 
 Shizuoka Pref: 11,819 (east of Fuji River) 
[Supply and Demand Status within TEPCO's Service Area to Secure Stable Power 
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
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 power.
Please do NOT touch cut-off electric wires.
* Revised past progress 
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