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 4 to 6: outage due to regular inspections before the earthquake)

- Since February 2, a significant temperature rise at the bottom of the
  PCV of Unit 2 has been observed. The current temperature is 93.3°C 
  (reference) (at 1:00 pm of February 13). We are now investigating the 
  measuring instrument. We will continue monitoring the temperature
  tendency.

- At 10:07 am on February 8, we stopped the operation of the secondary 
  cooling tower in order to prevent overcooling of alternative cooling 
  system of spent fuel pool of Unit 3. Afterward the temperature of the 
  water of the pool was increased so we operate the secondary cooling 
  tower at 10:08 am on February 13.

- At 1:29 pm on February 13, we started injection of hydrazine to spent 
  fuel pool of Unit 2 through the circulating cooling system.

·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.

 
Appendix: Past Progress (As of 3:00 pm on February 13, 2012) (PDF 426KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 

* Revised past progress