ORIX Begins Construction of a Mega-Solar Plant with a Maximum Output of 56.4 MW in Mine City, Yamaguchi Prefecture


It will be the largest of all the mega-solar power plants developed and operated by ORIX.

The power plant will be established on a site measuring approximately 116 ha, owned by Mine environment Promotion Co., Ltd. in Nishiatsucho, Mine City, Yamaguchi Prefecture. Operations are scheduled to commence in October 2021.

■ Project Overview

Power Plant NameOR Yamaguchi Mine Solar Power Plant
Location909, Kamiserita, Hongo, Nishiatsucho, Mine City, Yamaguchi Prefecture
Output Scale (Module Capacity)56,422 kW (planned)
Installation AreaApproximately 116 ha (equivalent in size to roughly 25 Tokyo Domes)
Number of Installed Panels205,172 (planned)
Projected Annual Power Generation64,880,264 kWh (planned)
Equivalent to the annual power consumption of approximately 18,000 households*
Construction CompanyToda Corporation, Toshiba Plant Systems & Services Corporation
Start of OperationsOctober 2021 (planned)

* Calculation based on consumption of 3,600 kWh a year per household.
Source: Electricity Statistics Information, Federation of Electric Power Companies of Japan

ORIX is actively expanding its activities with regard to power plants that make use of renewable energies such as solar, geothermal, wind, and biomass. Of these, the company’s large-scale solar power plants (mega-solars), which are built on unused land, generate a maximum output of 837 MW, while its rooftop solar power plants, which are installed on the roofs of factories, warehouses, and other buildings, generate a maximum output of 159 MW. In total, ORIX is responsible for the development and operation of solar power plants amounting to approximately 1,000 MW (as of March 31, 2018). The company is also engaged in a wide range of environment and energy businesses, including electric power retailing and the provision of energy-conservation services such as ESCO. Going forward, ORIX will continue to generate new added value for society.

■OR Yamaguchi Mine Solar Power Plant (Concept image of completion)