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.

*Updates are underlined.

[Nuclear Power Station]

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

-At 2:17 pm on January 24, at the desalting facility of the spent fuel 
 pool of Unit 2, an emergency alarm of "RO unit warning" activated, and 
 the system stopped automatically. We are currently checking for cause of 
 the alarm. All of the separation valves of the system were closed by the 
 inter-lock, and the alternative cooling system continues operation. 
 Therefore, there is no influence on cooling, In addition, as a result of 
 the on-site confirmation, no liquid leakage was confirmed. 

-At 10:52 am on January 25, we changed injection water amount to the 
 reactor of Unit 3 for switching piping arrangement of reactor injection 
 pump on the hill. We changed the water injection amount to the reactor 
 gradually, and the water from the reactor feed water system changed from 
 approx. 7.1m3/h to approx. 8.0m3/h, and the water from the core spray 
 system changed from approx. 1.8m3/h to approx. 1.0m3/h.

·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 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 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 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 - 3.1 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.

* Correction of Description in [Impacts on Power Supply and Demand Balance]
We described,"there will be some minus factors such as the regular 
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station" in the 
previous press release. However, because Unit 5 of Kashiwazaki-Kariwa 
Nuclear Power Station has already conducted a regular inspection since 
January 25, we revise the previous sentence to "there are some minus 
factors such as the regular inspection of Unit 5 at Kashiwazaki-Kariwa 
Nuclear Power Station". We would like to apologize for the correction 
(February 8, 2012). 

  
Appendix: Past Progress (As of 3:00 pm, January 25, 2012) (PDF 628KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)
 
* Revised past progress