I noticed no foreign manufacturers are ranked in the top home energy storage system brands in Japan. The top three are Tabuchi, Omron, and Sharp. In contrast, the domestic market for solar panels are dominated by Chinese manufacturers, and power conditioners it’s a mix of Japanese and foreign makers. Is there some kind of regulatory hurdle to selling foreign-made home energy systems in Japan?
https://www.reddit.com/r/japan/comments/xr32zi/home_energy_storage_systems_japans_last_galapagos/