Tokyo-based Nippon Renewable Energy (NRE) commissioned the PV array, its biggest project thus far, in September in Mito, Ibaraki prefecture.
Trina Solar supplied the PV modules, according to a company spokesperson.
The project  which spans 42 hectares on the site of a former golf course  will generate roughly 43.42 GWh of electricity per year, or enough to cater to the needs of 8,713 homes.
"NRE has the in-house capabilities to take projects from initial planning to commercial operations, covering all phases of project development and financing, technical engineering, construction management, and operations and maintenance, it said in an emailed statement.
Under a recently signed technology framework agreement, NRE has also agreed to collaborate with Schneider Electric on 17 future PV projects, including 10 that are currently under construction.
The Paris-based energy-management specialist has already supplied its proprietary PV-BOX technology  a containerized, plug-and-play power conversion solution  to NRE for 105MW of solar capacity at five sites, including the 36 MW Mito project.
Under their new partnership, Schneider Electric has also agreed to handle O&M duties  including monitoring and data analysis services  for NREs pipeline of projects in the country.
NRE, an independent power producer with regional offices in three prefectures, currently claims a 510MW solar development portfolio across nine prefectures in Japan.