As of August 2026, Japan has 20,633 active solar & energy companies in the SolarXList directory — 9,405 with a website and 18,922 with a phone number. The largest hubs are Tokyo (462), Aichi (329), tama (265). The most common company types are Solar Installers, Solar EPC Contractors, Electric Utilities.
Japan has 20,633 solar & energy companies listed on SolarXList — 9,405 with a website and 18,922 with a phone number.
The directory covers Electrical / Electrician, Solar Installation / EPC, Engineering / Contractor, Energy (Other), with common roles such as Solar Installers, Solar EPC Contractors, Electric Utilities.
Top hubs include Tokyo, Aichi, tama.
Find your company in the directory and click "Claim this company" — listing and claiming are free.