A number of Japanese solar manufacturers, including Panasonic, produce PV modules outside of Japan.

But the figures — published this week by the Japan Photovoltaic Energy Association (JPEA) — suggest that non-Japanese companies have been making significant progress in cracking the country’s solar market, where trusted, domestic brands traditionally reign supreme.

Made-in-Japan solar panels accounted for roughly 3.7GW of the domestic total in fiscal 2013, the JPEA said.

Residential