VSUN Solar USA Inc. is the U.S. presence of VSUN, a Japanese-invested solar solution provider that offers photovoltaic (PV) products and related services globally. Headquartered in Fremont, California, VSUN Solar USA Inc. is part of a larger entity whose ultimate parent is Japan's Abalance Group, founded in 2006 and listed on the Tokyo Stock Exchange. VSUN was established in 2015. While one source estimates VSUN's revenue between $1 million and $5 million with 11-20 employees for "VSUN's Information", other reports indicate a global module production capacity of 6.5 GW and solar cell capacity of 6 GW, with a workforce that suggests a larger scale of operations for the broader VSUN entity. The VSUN brand was acquired by TOYO Co., Ltd, a sister company also under Abalance Corporation, in September 2025.
The company specializes in manufacturing solar PV modules, wafers, and solar cells, operating with a vertically integrated supply chain. Its product portfolio includes N-type Modules (Vesta N), Full Black Modules (Vesta Ultra Black), Mono-facial Modules (Vesta), and Bifacial Modules (Vesta Duo). VSUN also provides comprehensive solar solutions, encompassing project design, procurement, construction (EPC), and maintenance services for utility, commercial, industrial, and residential applications. The company is recognized as a BNEF Tier 1 PV module manufacturer and a "Top Performer" by PV Evolution Labs.
VSUN Solar USA Inc. has a limited patent litigation profile, appearing as a defendant in one tracked case. The specific case, Shanghai Jinko Green Energy Enterprise Management Co LTD et al. v. VSUN Solar USA Inc. et al., filed in the United States District Court for the Northern District of California, indicates its posture as an operating company defending against claims, rather than an entity asserting patents.