Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March
11th 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 17th, we have put together the roadmap towards restoration from the
accident and then we updated the roadmap considering the current situation,
on May 17th. 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 9:14 pm on May 28th, we found that one temporary residual heat 
  removal system seawater pump of Unit 5 stopped. At 8:12 am on May 29th, 
  replacement work to the spare pump started. 
- At 1:28 pm on May 28th, we started freshwater injection to the spent 
  fuel pool of Unit 3 by the Fuel Pool Cooling and Filtering (Clean up) 
  System (we also injected hydrazine from 1:42 Pm to 2:40 pm), and 
  finished at 3:08 pm. 
- From 4:47 pm to 5:00 pm on May 28th, we conducted the leak test for Unit 
  1 spent fuel pool by fresh water injection using Fuel Pool Cooling and 
  Filtering System. 
- At 8:54 pm on May 28th, we stopped water injection to the reactor of 
  Unit 3 through the fire extinction system. 
- At 5:56 pm on May 28th, we started water spray to the spent fuel pool of 
  Unit 4 by the concrete pumping vehicle (we also injected hydrazine from 
  6:02 pm to 7:45 pm), and finished at 7:45 pm. 
- From 9:00 am on May 28th, we started transferring accumulated water on 
  the basement of Unit 6's turbine building to temporarily-installed tank
  again,and finished at 7:00 pm. 
- On May 28th, we sprayed dust inhibitor for the area of 4,375m2, over the 
  surrounding area of Incombustibles Treatment Facility.

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

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

[Thermal Power Station] 
- Hirono Thermal Power Station Unit 2 and 4: Shutdown due to the 
  earthquake

[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] 
We have worked to restore electricity supply after our nuclear and thermal
power facilities were severely damaged by Tohoku-Chihou-Taiheiyou-Oki 
Earthquake. This time, we revised that the supply capacity in this summer 
would increase because we could plan to secure an additional capacity. 
However, in order to maintain the policy of avoiding further 
implementation of rolling blackouts during the summer, in addition to the 
above increase of the supply capacity, we sincerely ask for your continued
cooperation in reducing electricity consumption. Now we are creating 
concrete measures considering "Outline of Countermeasures for Power Supply
and Demand During Summertime" presented by the Electricity 
Supply-Demand Emergency Response Headquarters of the Japanese government.
                                                    (Previously Announced)

In the event that an unplanned outage such as excessive continuous 
operation in old plants and a sudden increase of power demand due to 
unusual hot temperature occur, there is a possibility to affect a stable 
power supply. In order to maintain the policy of avoiding rolling blackouts,
we steadily implement to install additional power capacity we have planed,
and we continuously do our best efforts to secure supply capacity.

 
Appendix: Past Progress (PDF 318KB) 

* Revised past progress