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 from 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)

- Water treatment facilities suspended at 6:30 am on November 25 to switch 
  the power source of Ookuma 2 line movable transformer. Cesium adoption 
  apparatus resumed after switching power source to Ookuma 3 line at 
  12:37pm. (1st Cesium adoption apparatus at 3:00 pm, 2nd Cesium adoption 
  apparatus at 5:00 pm )

- At 10:20 am on November 25, water leak detected at the pipe arrangement 
  between desalination facility and buffer tanks due to the vent valve 
  open. It is assumed that the valve was opened in the construction of 
  attaching lagging material to the pipe.

- At 10:30 am on November 25, a water leakage was detected at the piping 
  arrangement between water treatment facility and buffer tanks. At 10:57 
  am, after the water transfer pump was shutdown, the leakage stopped by 
  conducting a recovery work. At 11:43 am, the pump resumed. After that, 
  we did a check-up and at 12:45 pm a small amount of water leakage was 
  detected at other two points. After the recovery work was done and the 
  leakage stopped at 1:12 pm, the water transfer pump resumed at 2:10 pm. 
  During that time, we don't think there was any impact on the water 
  injection into reactor because there was plenty of treated water.
  Since the water that run and leaked out from the venting pipe was 
  already treated in the radioactive and fresh-water terms, we confirmed 
  the radioactive density of the leaked water was not detectible (below 
  the measurable limit).

- At 2:54 pm on November 25, we started transferring accumulated water 
  from Unit 1 T/B to Unit 2 T/B.

·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 3:00 pm, November 25, 2011) (PDF 166KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress