Japan has no nimble Solfium twin — local giants (Panasonic, Sharp, Mitsubishi Electric) sell hardware and EPC, banks offer financing, but nobody stitches a fintech-driven, MSME-focused distributed-solar platform together; the space is a yawning white‑space where corporate incumbents lumber while an agile start-up could grab the entire SME decarbonisation funnel.

This is a call to arms for Japanese founders and fast-moving corporates: clone Solfium’s playbook now — marry pay-as-you-go finance with a slick installer marketplace, embed in corporate procurement chains, and partner with regional banks — and you will sweep up millions of underserved SMEs and own Japan’s next wave of practical decarbonisation. Move fast; the market rewards ruthlessness over caution.