"The risk of power outages remains the same no matter which retail electricity provider you use.
Electricity supply to your home will continue to be handled by general electricity transmission and distribution providers (such as Tokyo Electric Power Company), as before, so you will not be more susceptible to power outages even if you switch to Minna Denryoku.
Also, even if there is a shortage of power sources secured by Minna Denryoku, backup power sources such as the Japan Electric Power Exchange (JEPX) will be used, so there will be no power outages."