Tokyo Century backs next-gen solar panel maker PXP in Series B
What's the deal? Tokyo Century, one of Japan's largest financial services companies, has made a Series B investment in PXP, a Kanagawa-based startup developing lightweight, flexible chalcopyrite solar panels. Alongside the investment, the two companies signed a business alliance agreement that gives Tokyo Century priority access to PXP's products once mass production begins.
The funding will support construction of PXP's mass production factory. The specific investment amount was not disclosed.
Why now? Japan's renewable energy rollout faces a stubborn bottleneck: suitable installation sites are running out. Conventional solar panels are too heavy for many older factories, warehouses, and carport roofs. PXP's panels weigh less than one-tenth of traditional ones, unlocking locations that were previously off-limits.
For Tokyo Century, the deal fits squarely into its mid-term management plan through 2030, which prioritises decarbonisation. It also strengthens the company's corporate power purchase agreement (PPA) business — where it sells clean energy directly to businesses — by expanding both supply and the range of viable installation sites.
What could go wrong? PXP's technology still needs to prove itself at scale. Moving from development to mass production is a notoriously difficult leap for solar startups, and factory construction timelines can slip. Chalcopyrite panels also face competition from perovskite-based technologies, which have attracted heavy investment globally.
Market risk looms too. Japan's corporate PPA market is growing, but the pace depends on electricity pricing, regulation, and corporate willingness to commit to long-term contracts.
The signal: This deal reflects a broader trend: large Japanese corporates are stepping in to bankroll next-generation clean energy hardware, not just deploy existing technology. Tokyo Century is betting that the constraint on solar adoption is no longer cost but physical space — and that ultra-light panels can crack that problem.
The alliance also hints at where things are headed. Tokyo Century plans to explore mounting PXP's panels on electric vehicles through its mobility division, pursuing what it calls "energy self-sufficiency for moving objects." Longer term, the partners aim to develop perovskite-tandem solar cells — stacking two different cell types to capture a wider spectrum of light and boost efficiency further.
Read more: prtimes.jp
