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 2:45 pm on May 26th, we started to remove water from the condenser of 
 the turbine building in order to be prepared for the construction for 
 water injection through feed water system piping arrangement into the 
 reactor of Unit 2.Completed at 2:30 pm on May 27th. 
-At 8:42 pm on May 27th, we changed the rate of water injection to the 
 reactor of unit3 through the fire extinction system piping arrangement 
 from approximately 2 m3/h to approximately 1 m3/h. 
-At 5:05 pm on May 27th, we started to spray water to the spent fuel pool 
 of Unit 4 by the concrete pumping vehicle (We added hydrazine from 5:24pm 
 to 6:53pm). We finished spraying at 8:00pm on the same day. 
-From 9:00 am to 7:00 pm on May 27th, we started transferring accumulated 
 water on the basement of Unit 6's turbine building to 
 temporarily-installed tank. 
-On May 27th, using a bending spray tower vehicle., we sprayed dust 
 inhibitor, which prevents the radioactive materials on the ground surface 
 from dispersing, at the roof and outer walls of Unit 1's reactor building, 
 totaling the size of around 6,600 m2. 
 On May 27th, with conventional method, we sprayed dust inhibitor over 
 areas surrounding Incombustibles Treatment Facility with the size of 
 approximately 8,750 m2.

Fukushima Daini Nuclear Power Station:  
       Units 1 to 4: shutdown due to the earthquake 
 
-At approximately 10:01 am on May 27th, a fire broke out at the 
 distribution panel for lighting at power supply room for High Pressure 
 Core Spray System on the 1st basement floor of Unit 1's reactor building 
 annex. At 10:04 am on the same day, workers of partner company 
 extinguished the fire, and TEPCO's employee confirmed the fire had been 
 extinguished. We report the incident to the fire station at 10:08 am on 
 the same day. At 11:19 am on the same day, the fire station staff 
 confirmed at the site that the fire had been extinguished. This incident 
 has been judged as a small fire of building.

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 317KB) 

* Revised past progress