SoftBank Corp. Invests in Next-generation Solar Cell Developer PXP Corporation to Expand Use of Renewable Energy

To build next-generation infrastructure for the AI era, SoftBank Corp. (TOKYO: 9434) is advancing the construction of AI computing platforms and data centers, and, to meet the increased demand for AI-driven data processing while taking steps to mitigate global warming, securing renewable energy sources.

Identifying with the company’s vision to provide “seamless clean energy to anyone, anywhere and anytime,” SoftBank announced it led an investment round in PXP Corporation, a Japan-based startup developing lightweight and flexible solar cells, on December 4, 2024. In the investment round totaling 1.5 billion yen, SoftBank invested 1.0 billion yen to acquire 29.9% of PXP’s shares.

Anticipated applications include data centers and HAPS

The next-generation solar cells being developed by PXP utilize a tandem structure that combines the minerals perovskite with chalcopyrite. This combination achieves an energy conversion efficiency that is more than 1.5 times greater compared to conventional solar cells. In addition, PXP next-generation solar cells are about one-tenth the weight of existing solar cells, flexible enough to bend, and are highly resistant to shocks and vibrations. This means they can be utilized at different types of locations with lower installation costs.

SoftBank anticipates it will be possible to supply its data centers with more clean energy by installing PXP's lightweight, flexible and highly efficient solar cells. SoftBank is also aiming to use PXP’s solar cells for other applications, such as powering portable base stations for use in emergencies and mounting them on HAPS unmanned aircraft flying in the stratosphere.