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. 
 
Below is the status of TEPCO's major facilities. 
*New items 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) 
 
*On March 20th, 21st, 23rd to April 15th, we detected radioactive 
 materials in the air collected at the site of Fukushima Daiichi Nuclear 
 Power Station. The data of detected three nuclides (Iodine-131, 
 Cesium-134and Cesium-137) was reported as fixed data. Other nuclides 
 figures are to be re-evaluated based on the improved measures for 
 recurrence prevention which have been prepared in accordance to a strong 
 warning by NISA on April 1st. 
*On March 21st, 23rd to April 15th, we detected radioactive materials from 
 seawater around the discharge canal. The data of detected three nuclides 
 (Iodine-131, Cesium-134 and Cesium-137) was reported as fixed data. Other 
 nuclides figures are to be re-evaluated based on the improved measures 
 for recurrence prevention which have been prepared in accordance to a 
 strong warning by NISA on April 1st. 
*From April 5th to April 15th, Iodine-131, Cesium-134 and Cesium-137. 
 Other nuclides figures were detected from the water sampled in the pit 
 and in the sea near the pit. Other nuclides figures are to be 
 re-evaluated 
 
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 Units 2 and 4: Shutdown due to the 
 earthquake 
-Hitachinaka Thermal Power Station Unit 1: Shutdown due to the earthquake 
-Kashima Thermal Power Station Unit 6: 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 must 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, as stated, we may reluctantly restart the 
implementation of rolling blackouts. 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 139KB) 
 
* Revised past progress