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, 2011, we have compiled the roadmap towards restoration from the 
accident and on July 19 we accomplished the Step1 target "Radiation dose 
is in steady decline". Then on December 16 we confirmed the accomplishment 
of the Step 2 target "Release of radioactive materials is under control 
and radiation doses are being significantly held down".
In addition, on December 21, 2011, we have compiled the "Mid-to-long-Term 
Roadmap toward the Decommissioning of Fukushima Daiichi Nuclear Power 
Units 1-4, TEPCO".
In addition to the maintenance of the plant's stable condition, we will 
implement Mid-to-Long Term countermeasures towards the decommissioning of 
Fukushima Daiichi Nuclear Power Units 1-4 to enable evacuees to return to 
their homes as soon as possible and reduce the anxiety of the people in 
Fukushima and the whole nation as soon as possible.
 
Below is the status of TEPCO's major facilities.
 
* The updates are underlined. 

[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 before the earthquake)
 
- From February 2, tendency of temperature rise at the bottom of PCV was 
  observed. Thus, from 0:19 am to 3:20 am on February 7 we injected boric 
  acid into the reactor as a safety countermeasures against the 
  re-criticality, and changed the amount of the core spray system 
  injection water from 3.7m3/h to 6.7m3/h* at 4:24 am (the amount of the 
  continuing feed water system injection is 6.8m3/h). Currently, the  
  temperature is approx.69.6°C (as of 11 am on February 7). We will 
  monitor the progress continuously.
  As a result of the sampling for the Gas Control System of the Unit 2 
  which we conducted on February 6* to make sure there is no re-criticality 
  state, we confirmed that the concentration of Xe-135 was below the 
  detectible limit (1.0 x 10-1 Bq/ cm3) at the system's entrance, meaning 
  that it falls below the re-criticality criteria, or 1 Bq/cm3.
 
- From 9:49 am on February 5 to 1:56 pm on February 7, we transferred the 
  accumulated water from the basement of turbine building of Unit 3 to 
  Centralized Radiation Waste Treatment Facility (Miscellaneous Solid 
  Waste Volume Reduction Treatment Building [High Temperature Incinerator 
  Building]).
 
- At 2:14 pm on February 7, 2012, we started transferring the accumulated 
  water from the basement of turbine building of Unit 2 to Centralized 
  Radiation Waste Treatment Facility (Miscellaneous Solid Waste Volume 
  Reduction Treatment Building [High Temperature Incinerator Building]). 
 
· Fukushima Daini Nuclear Power Station:
  (Units 1 to 4: shutdown due to the earthquake)
 
· Kashiwazaki Kariwa Nuclear Power Station: Units 6: under normal 
  operation
  (Units 1 to 5 and 7: outage due to regular inspections) 

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

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

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

[Impacts on Power Supply and Demand Balance] 
This winter, there are some minus factors such as the regular inspection 
of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station. On the other hand, 
there are several plus factors such as the recovery of the common thermal 
power stations which suffered the earthquake. As a result, we expect to 
secure 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 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.
 
* :It was originally stated as "February 7", however, the correct date is
   "February 6".
   We apologize for the error. (Corrected on February 8, 2012) 

Appendix: Past Progress (As of 3:00 pm, February 7, 2012) (PDF 406KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 

* Revised past progress