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.

* The underlined parts are the 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)

  * At around 3:00 pm on October 3, TEPCO staff observed an oil leakage 
    from the transformer B system for transportation of Okuma 3 line 
    (in-vehicle) while on patrol. The amount of the oil leakage was about 
    one drop in ten seconds and the oil formed an oil film of approximately 
    1m x 1m. An emergency procedure was taken to stop the leakage. As the 
    preparation of repair materials, replacement of oil cooler of 
    transformer will be start from November 22, on November 21 today, to 
    switch source of electricity load receiving at this transformer from 
    Okuma-line No.3 to Okuma-line No.2, series of water treatment 
    facilities currently under operation such relevant facilities as 
    Cesium adsorption apparatus, secondary cesium adsorption apparatus, 
    water desalination facility (RO membrane type), evaporative 
    concentration apparatus) will be out serviced accordingly from 5:00 am 
    today. There will be no effect on the water injection into reactor as 
    water injection will be continued by using desalinated water stored in 
    the tank. At 2:06 pm, switching of source of electricity load to Okuma-
    line No.2 completed. Afterwards, we restarted related facilities 
    sequentially, and all facilities which had been stopped were resumed 
    at 11:50 pm on the same day. 

  * At 10:00 am on November 21, transfer of accumulated water under ground 
    of turbine building of unit 6 to temporary tank started. The transfer 
    was stopped at 4:00 pm on the same day. 

· 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, November 22, 2011) (PDF 152KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress