Energy has been a key in the progress of human society not only in Myanmar but also all over the world. Myanmar has considerable indigenous energy potential, which could meet domestic demand in long term if properly managed. Of course, 74 percent of total population in Myanmar is still deprived of access to electricity. It is not right to live in the poor mire of energy-poverty in such a favorable situation of energy sources. Japan is the most developed nation, in my opinion, in management as to commercialize the technique. For this reason, We will focus on potential of pioneering “Smart House” project in Japan. Simultaneously, energy industry for such kind of Smart House Project is one of the most capital-intensive among high-tech industries. While the company is characterized by intense technological and market competition, to capture the need for managerial flexibility and to create the win–win relationship with the rivals are totally important. This paper examines the optimal investment strategies for renewable energy industry of technological innovation by the option-games approach. By cooperating between Japan and Myanmar, we propose the result for sustainable energy productivity and supply to citizens of Myanmar.