应该用短语so...that...“如此...以致”,而不是so that“以便；以使”,so...that...中的so后跟形容词或副词,that后引出结果状语从句.so that是引导目的状语从句.显然这个句子不是表目的.
应该这样：Electric power is not so accessible sometimes that bring a great deal of inconvenience to our life
另外life不需要用复数,因为这里的life指生活,它没有复数.
希望能帮到你!