[en] This paper discussed the situation regarding the insight into future possibilities owned by pioneers of electric power enterprises, characteristics of the technology supporting electric power enterprises, and initiative for environmental ethics owned by power entrepreneurs. Furthermore, in the sense of ethics of the people who support the operation sites, as an insight to look at technology and human beings, this paper introduced the sense of mission, sense of responsibility, and sense of ethics toward power business of the people who engaged in the following events. (1) From the sense of mission, they created a restoration support system at the time of disaster prior to the Fukushima Daiichi Nuclear Power Station accident (1F accident) and quickly took countermeasures in face of 1F accident. (2) Tohoku Electric Power's thermal power plant was restored in a short period of time from the damage of the tsunami. (3) Hokkaido Electric Power Co. restored power transmission network in a short period of time, when a large blackout due to atmospheric depression occurred. Regarding nuclear power generation, the Japanese government and electric power companies have consistently promoted it from the viewpoint of peaceful use of nuclear power. As the social environment changes, people need to look at the reality of nuclear power generation. People in a position to oppose to nuclear power generation persist that (1) there is no cause of promoting nuclear power generation after 1F accident, and (2) feasibility of high level radioactive waste disposal sites is questionable. Recognizing that there may be errors on the grounds of promotion, promoting people are required to exchange dialogues with people with different positions. As fundamental issues concerning electric power technology and ethics, this paper summarized the author's opinions on (1) restructuring of technical ideology, (2) establishment of public-interest-first principle, and (3) ethics of science and technology. (A.O.)