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) 

- As a result of the analysis carried out on ambient air at the opening of 
  the Unit 1 Reactor Building extracted on May 22nd, and on ambient air at 
  the opening of the Unit 4 Reactor Building extracted on May 23rd, 
  radioactivity material of Iodine 131, Cesium 134, Cesium 137 have been 
  detected. 

- The transfer of accumulated water in Unit 6 turbine building to a 
  temporary tank was started at 9 am on May 24th. Transfer pump was 
  stopped at 7:00 pm May 24th (approximately 200m3). 
  Transfer was resumed at 9:00 am May 25th. 

- On May 24th, we sprayed dust inhibitor on the east side of the turbine 
  buildings of Units 2 and 3 using an unmanned crawler dump truck in order 
  to prevent diffusion of radioactive materials on the ground (sprayed to 
  area of approx. 6,000 m2). 

- On May 24th, we sprayed dust inhibitor to areas including nearby Solid 
  Waste Storing Facility in a conventional method (sprayed to area of 
  approx. 8,750 m2).

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 141KB) 

* Revised past progress