Corporate Information

Press Release (Jul 07,2011)
Status of TEPCO's Facilities and its services after the Tohoku-Chihou-Taiheiyou-Oki Earthquake (as of 3:00 PM, July 7)
Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March 
11, 2011, TEPCO's facilities including our nuclear power stations have 
been severely damaged. We deeply apologize for the anxiety and 
inconvenience caused.
With regard to the accident at Fukushima Daiichi Nuclear Power Station, on 
April 17, we have compiled the roadmap towards restoration from the 
accident and then we updated the roadmap considering the current situation, 
on June 17. By bringing the reactors and spent fuel pools to a stable 
cooling condition and mitigating the release of radioactive materials, we 
will make every effort to enable evacuees to return to their homes and for 
all citizens to be able to secure a sound life.

Below is the status of TEPCO's major facilities.
*Updates from previous press release are underlined. 

[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
       Units 1 to 3: shutdown due to the earthquake
       (Units 4 to 6: outage due to regular inspections) 

-At 10:30 am on July 7, we resumed transfer of the accumulated water at 
 the basement of T/B, Unit 6 to the temporary tanks.

-At 10:09 am on July 7, we resumed transfer of the low level radioactive 
 accumulated water that we once transferred from T/B of Unit 6 to 
 temporary tanks to Mega Float. 

-From 8:00 am on July 6 to 11:09 am on July 7, we temporarily suspended 
 operation of the desalination facility as the water level of the storage 
 tank at the upstream of the desalination facility went down to the lower 

-At 11:00 am on July 7, we stopped operation of the water treatment 
 facility to flush the system. At 12:50 pm on July 7, we started the 
 accumulated water treatment facility (cesium absorption facility). At 
 1:02 pm, we resumed operation of the water treatment facility. We are 
 continuing water injection to Reactor. 

Fukushima Daini Nuclear Power Station:
       Units 1 to 4: shutdown due to the earthquake

-At 2:05 pm on July 7, we received a report as follows: "Workers from our 
 subcontractor were checking the power board for the High Pressure Core 
 Spray System located at B1, auxiliary building to R/B, Unit 1. They found 
 sparks from a circuit breaker in that power board." At 2:30 pm on the 
 same day, TEPCO employees checked the power board. From now on, we will 
 open the connecting circuit breaker that supplies power to the power 
 board and investigate the cause. In connection with this, we are planning 
 to temporarily stop the Residual Heat Removal System Pump (B).

Kashiwazaki Kariwa Nuclear Power Station:
       Units 1, 5, 6, 7: normal operation
       (Units 2 to 4: outage due to regular inspection)

[Thermal Power Station]
-Hirono Thermal Power Station Unit 2 and 4: Shutdown due to the earthquake

[Hydro Power Station]
-Power supply has returned to normal and facilities damaged by the 
 earthquake are now being handled in a timely manner.

[Impacts on Transmission Facilities]
-Power supply has returned to normal and facilities damaged by the 
 earthquake are now being handled in a timely manner.

[Perspective of Power Supply and Demand Balance in this Summer] 
In regard with the supply side in this summer, taking in account of the 
acceleration of restoration schedule for Hirono Thermal Power Station, 
more purchase of privately generated power, and excluding the power supply 
from 60Hz areas which had been planned (due to the current difficult 
situation), supply capacity outlook is amended to 56.8GW at the end of 
July, and 55.6GW at the end of August.
Also, in order to support balance of demand and supply in the Tohoku area, 
which suffered severe damage from the quake, we would like to supply 
maximum of 1.4GW to Tohoku Electric Power Company by thoroughly 
implementing both supply and demand countermeasures. The supply capacity 
in this regard will be 55.4GW at the end of July, and 54.2GW at the end of 

Estimated peak demand of 55GW for this summer is 5GW lower than that of 
last year. This incorporates the saving of electricity from "Outline of 
Countermeasures for Power Supply and Demand During Summertime" and 
restoration from decrease of production due to the quake.

As the occurrence of unplanned outage of aged thermal power stations or 
sudden increase of demand due to unexpected high temperature during summer 
may cause difficulties in maintaining stable demand supply balance, in 
order to continue to avoid rolling blackouts, we will steadily maintain 
supply capacity, and continue our efforts on reliable operation and 
maintenance of power facilities.

We apologize for the inconvenience this may cause and appreciate for your 
cooperation to save electricity.

Appendix: Past Progress (PDF 196KB)

* Revised past progress
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