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. 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 4:18 pm May 8th, we started draining the water from the condenser in 
 the turbine building as a preparation for the work to inject the water 
 into the reactor of Unit 3 using the feed water system. At 5:41 am May 
 10th, we finished the drainage. 

-At 4:05pm May 9th, we started spraying the water to the spent fuel pool 
 of Unit 4 by the concrete pumping vehicle (We added hydrazine for the 
 period from 4:11pm to 6:38pm). At 7:05pm on the same day, we finished 
 spraying. 

-From April 22nd, we installed the thermocouple-type thermometer and the 
 radiation dose meter to the concrete pumping vehicle at the spent fuel 
 pool of Unit 4 and we investigated the water level of pool, water 
 temperature, radiation dose, water analysis etc. As part of the 
 investigation, we sampled approx. 280 ml of water from the pool on May 7 
 and conducted nuclide analysis on May 8. As a result of the analysis, 
 cesium 134, 137 and iodine 131 were detected. 

-At 2:00pm May 9th, we resumed transfer of Unit 6 turbine building 
 basement water to a temporary tank. At 5:00pm on the same day, we stopped 
 the pump (approx. 60m3). 

-May 9th: we sprayed the dust inhibitor to areas including nearby the 
 solid waste storage facility (approx. 5,250m2) using the conventional
 method. 

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
-Hitachinaka Thermal Power Station Unit 1: 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. 

[Avoidance of further Implementation on Planned Rolling Blackouts and 
Request for Conserving Electricity Consumption] 
Currently, we are working to restore electricity supply after our nuclear 
and thermal power facilities were severely damaged by 
Tohoku-Chihou-Taiheiyou-Oki Earthquake. The widespread understanding and 
cooperation of our customers to conserve electricity have contributed to 
the improvement of this tight power supply-demand balance situation.
Amidst this backdrop, since the electricity supply will be able to balance 
with the demand for the time being, we have decided not to implement 
further rolling blackouts in principle.
However, we sincerely ask for your continued cooperation in reducing 
electricity consumption due to the possible increase in demand caused by 
warmer weather or unexpected trouble at power stations that are currently 
being restored to service. In case the electricity supply-demand balance 
becomes tighter than expected, we may regrettably need to restart the 
implementation of rolling blackouts, with prior notice. We kindly ask for 
your cooperation.
We will do our best to maintain this policy of avoiding further 
implementation of rolling blackouts during the summer. 

Appendix:Past Progress (PDF 286KB) 
 
* Revised past progress