But its creators conceded there was work to do before taking the fabric to market.
"We still have things to solve before commercialisation, such as coating for the conductive wires and improving the fabric's durability," said an official at the Industrial Technology Center in central Japan's Fukui Prefecture.
"But we've already been contacted by electronics makers, blind makers and others who showed interested in our invention."
The centre developed the fabric with a Kyoto-based solar cell maker and other private firms, the official said.
Solar power generation is attracting renewed attention in Japan as the country looks to alternative energy sources in the aftermath of last year's tsunami-sparked atomic crisis, the worst nuclear accident in a generation.