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 roadmap considering the current situation,
on June 17. 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.
*Updates from previous press release are underlined.

[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
   Units 1 to 3: shutdown due to the earthquake
   (Units 4 to 6: outage due to regular inspections)

- At 9:46 am on July 17, an alarm showing decrease in amount of water
  injection to Unit 1 reactor rang.
  At 10:06 am on the same day, we adjusted the water injection rate at
  approx 3.8 m3/h as we confirmed that the rate of water injected into the
  reactor decreased to approx 3.0 m3/h.

- At 2:25 pm July 17, we changed the water injection line so that we could
  inject water to Unit 1 and 2 reactors by the motor driven pump for Unit 2
  and stopped the motor driven pump to inject water into Unit 1 reactor. In
  addition, we adjusted the rate of water injection into Unit 1 at approx
  4.0 m3/h.

- At 3:08 am on July 17, due to the restoration work of 2 lines of Yonomori
  Line, we started the Emergency Diesel Generator (B) of Unit 5 (suspension
  of offsite power supply to Units 5 & 6). At 3:26 pm on the same day, we
  stopped the Emergency Diesel Generator (B) of Unit 5.

- At 3:28 am on July 17, due to the restoration work of 2 lines of Yonomori
  Line, we started the Emergency Diesel Generator (B) of Unit 6 (suspension
  of offsite power supply to Units 5 & 6). At 4:02 pm on the same day, we
  stopped the Emergency Diesel Generator (B) of Unit 6.

- At 4:24 am on July 17, due to the restoration work of 2 lines of Yonomori
  Line, we stopped Yonomori Line (suspension of offsite power supply to
  Units 5 & 6). At 1:20 pm on the same day, we resumed receiving power from
  Yonomori Line (by using Futaba Line).

Fukushima Daini Nuclear Power Station:
   Units 1 to 4: shutdown due to the earthquake

- At 11:40 am on July 17, the Clean up Water System of Unit 2 has been
  restored.
  * Clean up Water System (CUW): system to remove impurities in reactor
    water and maintain the water quality; The system is also used to
    control reactor water level by discharging redundant water from the
    reactor during a regular inspection or reactor shutdown.

Kashiwazaki Kariwa Nuclear Power Station:
   Units 1, 5, 6, 7: normal operation
   (Units 2 to 4: outage due to regular inspection)

[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.

[Perspective of Power Supply and Demand Balance in this Summer]
In regard to the supply side in this summer, taking in account of the 
acceleration of restoration schedule for Hirono Thermal Power Station, more
purchase of privately generated power, and excluding the power supply from 
60Hz areas which had been planned (due to the current difficult situation),
supply capacity outlook is amended to 57.3GW at the end of July, and 56.1GW
at the end of August.
Also, in order to support the supply and demand balance in the Tohoku area,
which suffered severe damage from the quake, we would like to supply 
maximum of 1.4GW to Tohoku Electric Power Company by thoroughly 
implementing both supply and demand countermeasures. The supply capacity in
this regard will be 55.9GW at the end of July, and 54.7GW at the end of 
August.

Estimated peak demand of 55GW for this summer is 5GW lower than that of 
last year. This incorporates the saving of electricity from "Outline of 
Countermeasures for Power Supply and Demand During Summertime" and 
restoration from decrease of production due to the quake.

As the occurrence of unplanned outage of aged thermal power stations or 
sudden increase of demand due to unexpected high temperature during summer 
may cause difficulties in maintaining stable demand supply balance, in 
order to continue to avoid rolling blackouts, we will steadily maintain 
supply capacity, and continue our efforts on reliable operation and 
maintenance of power facilities.

We apologize for the inconvenience this may cause and appreciate for your 
cooperation to save electricity.

Appendix: Past Progress (PDF 211KB)

* Revised past progress