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)
- At 9:01 am on January 23, we started to fill water in the condensate 
  storage tank of Unit 3. 
- In order to switch injection piping of reactor injection pump on the 
  hill, we have been intergrading the water injection rate to the reactor 
  of Unit 2 and 3, we adjusted the rate of water injection through feeding 
  water system from approx.5.0 m3/h to approx.6.0m3/h, through core spray 
  system from approx.3.9m3/h to 3.0m3/h at 10:13 am on January 23, 
  adjusted the rate of water injection through feeding system at Unit 2 
  from approx. 6.0 m3/h to approx. 7.0 m3/h, adjusted the rate of water 
  injection through core spray system from approx. 3.0m3/h to approx. 
  2.0m3/h at 10:16 am on the same day. 
- Since the decrease of water injection rate was confirmed at 10:22 am on 
  January 23, we adjusted water injection through core spray system from 
  approx.1.8 m3/h to approx.2.0 m3/h (Continuing water injection from 
  feeding water system at approx.4.6 m3/h. 
- At 10:36 am on January 23, we started transferring accumulated water 
  from On-site Bunker Building to Process main building at Centralized 
  Radiation Waste Treatment Facility. 
- From 4:23 am on January 23, defect that unable to transmitting data to 
  the Emergency Response Support System at Unit 2. As we reset the Circuit- 
  Terminating Equipment, the defect was resolved at 10:04 am on the same 
  day. Since data has been transmitted correctly there after, we suppose 
  that it was transient phenomenon. 

· 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 54.6 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.  

Appendix: Past Progress (As of 3:00 pm, January 23, 2012) (PDF 355KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 

* Revised past progress