Photovoltaic technology direction - Japanese "PV2030"

To get the over-100-year sustainability, the intrinsic value of renewable energy is the most important. According to this understanding, some projections are provided concerning future PV capability from world energy demand side. A stable, sustainable scenario is proposed up to 2100 in this discussion. To seek for this future state, typical key technologies are also suggested toward the last half of 21st century. In addition, recently in May 2004, Japan set up a long-term roadmap called "PV2030" Assuming that the domestic PV installation will reach around 100 GW up to 2030 and cost targets for 2010, 2020 and 2030 were specified as 23 JPY/kWh, 14 JPY/kWh and 7 JPY/kWh respectively. These levels correspond to present average single-family electricity price, industrial price and whole sale price.