An agreement to this effect has been signed between the company and Mashiki Town and Kumamoto Prefecture.
The plant featuring Canadian Solar modules will be the largest solar plant in Kumamoto Prefecture, the company said.
Expected to become operational in the first quarter of 2017, the solar project will generate close to 57,000MWh of clean energy annually.
Kyushu Electric Power will purchase the electricity generated at the project for $0.30 per KWh, under a 20 year feed-in-tariff contract.
Canadian Solar chairman and CEO Shawn Qu said: "The Mashiki solar project is our largest Japanese project to start construction, and represents an important milestone as we continue to make progress developing our high-value solar project pipeline in this important market."
Earlier this month, Canadian Solar completed the acquisition of three operating solar projects totaling 59.8MW from KKR in a $203.7m deal.
Canadian Solar plans to own and operate the projects located in Ontario which have been connected to the grid from October 2010 to November 2011.
"These projects will help round out our Canadian portfolio and are part of our strategy to own and operate projects.
"This acquisition demonstrates Canadian Solar’s ongoing investment and dedication to solar, as well as staying true to our strategy. We look forward to future transactions with KKR in North America," added Qu.
