The project, which will come online in January 2015, will be backed by 20bn yen ($226m) in investment, with Mitsubishi taking a majority stake, says newspaper The Nikkei.
"The project in question is yet to be finalised and as such we are not in a position to provide any details at this point," a Mitsubishi spokesman tells Recharge.
It may be the last industrial-scale project to be announced in the market before the government reviews feed-in tariffs for solar energy in April.
Analysts
