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)

*At 10:00 am on December 1, we started transferring the accumulated water 
 in the basement of the turbine building of Unit 6. At 4:00 pm on December 
 2, we stopped the transfer.

*At 9:01 am on December 2, we interrupted the operation of the alternative 
 cooling in order to replace the inside mesh of the primary strainer as a 
 countermeasure against the decrease in inhale pressure of the primary 
 pump for alternative cooling of the spent fuel pool. (The temperature of 
 the spent fuel pool as at the interruption: 18°C) After we replaced the 
 mesh inside the primary strainer, we restarted the operation of the 
 alternative cooling at 3:36 pm on the same day (The temperature of the 
 spent fuel pool as at the restart: 18.1°C).

*On December 2, as we finished the construction work to reinforce on-site 
 power, we stopped the evaporative concentration apparatus at 6:00pm on 
 December 2, water desalinations (reverse osmosis membrane type) at 8:04 
 am on December 3, and the cesium adsorption apparatus at 8:30 am on 
 December 3, respectively, in order to start receiving power from the 
 power source. As for the second cesium adsorption apparatus, it is 
 operated without interruption and the treatment of accumulated water is 
 in progress. There is no adverse effect to water injection into the 
 reactor, as purified water in the buffer tank is utilized. 

·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 3, 2011) (PDF 372KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress