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 progress status of roadmap considering the 
current situation, on July 19. Accomplishment of the Step1 target 
"Radiation dose is in steady decline" has been confirmed. On November 17, 
we updated the further progress. 
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.

* Underlined are updates since the previous press release.

[Nuclear Power Station] 

· Fukushima Daiichi Nuclear Power Station: Unit 1 to 3: shut down due to the 
  earthquake
   (Units 4 to 6: outage due to regular inspections)

* We are planning to establish the system injecting water into the reactor
  in Unit 1 to 3 using the condensate storage tank of Unit 3 as part of 
  reliability improvement of reactor water injection. During the 
  measurement of salt concentration in the left out water, it turned out 
  that concentration was high. To lower the salt concentration, we decided 
  to reduce the left out water and feed water. Before feeding water, from 
  10:00 am on December 6 to 8:54 am on December 7 we transferred the left 
  out water from the tank to the basement of the turbine building of Unit 
  3. At 9:19 am on the same day we started feeding water to the tank. Then 
  we discovered that there was a leak of water (approx. 5l) from the 
  connecting part of the hose and the tank. At 9:52 am we stopped water 
  transfer and confirmed that the leak stopped. After that, we finished 
  changing the hose. From 9:05 am on December 9, we started feeding water.
  At 9:25 on the same day, we finished checking the water feeding line for 
  water leakage. At 7:00 pm on the same day, we finished the filling.

* At 10:00 am on December 8, regarding the water accumulated underground 
  the Turbine Building of Unit 6, we started transfer to Temporary Tank. At 
  4:00 pm on December 9, we stopped the transfer.

* At 9:00 am on December 10, we started dust sampling above the reactor 
  building of Unit 3 with a large crane.

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

· Kashiwazaki Kariwa Nuclear Power Station: Units 5, 6: under normal 
  operation
   (Units 1 to 4 and 7: outage due to regular inspections)

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

[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.

[Impacts on Power Supply and Demand Balance]
This winter, there will be some minus factors such as the regular 
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station. On the 
other hand, there will be several plus factors such as the recovery of the 
common thermal power stations which suffered the earthquake. As a result, 
we expect to secure 54.9 GW (at the end of December), 54.6 GW (at the end 
of January), 53.7 GW (at the end of February) supply power. 
Compared to the maximum demand in the last winter, which is 51.5 GW, we 
will have 2.2 - 3.4 GW generation reserve margin.

We expect to maintain stable power supply this winter, however, as there 
remains possibilities of unplanned shutdowns at our power stations and 
growth in the demand according to the rapid change in the temperature, we 
would like to ask your reasonable effort to save electricity.

We will continue to make our efforts to maintain stable operation and 
maintenance of the power facilities in order to "prevent in principle" the 
planned blackouts and secure power supply.

Appendix: Past Progress (As of 9:00 am, December 10, 2011) (PDF 398KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress