Kyocera recently completed two floating solar projects in Japan. Image from Kyocera video.

Solar power is on the brink of becoming profitable in Japan and when it does, the technology will have achieved “commercial viability” in all of the G7 countries, Reuters is reporting.

“Solar has come of age in Japan and from now on will be replacing imported uranium and fossil fuels,” said Tomas Kåberger, executive board chairman of Japan Renewable Energy Foundation. “In trying to protect their fossil fuel and nuclear (plants), Japan’s electric power companies can only delay developments here.”

Reuters said residential solar power production costs have fallen by more than half since 2010 in Japan, and are now around 25 cents per kilowatt-hour (kWh), “comparable to average household electricity prices.”

RenewEconomy reports that by the end of last year, Japan had installed 15 gigawatts of solar through an incentive program program launched in July 2012. And the Japanese Photovolataic Energy Association recently raised its 2020 solar target for the country from 49.4 GW to 65.7 GW. By 2030, the JPEA said, Japan could have 100 GW of solar installed, providing 11.2 percent of the country’s electrical generation.