Sunova vs Tongwei - solar panel manufacturer comparison

Sunova is a Chinese solar manufacturer that has held BloombergNEF Tier 1 status continuously since 2023, qualifying through multiple independently financed projects across global markets. Operating a TOPCon cell factory in Yibin, Sichuan, the company runs at an annual module production scale of roughly 6.5 GW and a cell capacity approaching 9 GW - making it a mid-sized but credible and bankable supplier. Tongwei presents an entirely different order of magnitude: founded in 1982 in Chengdu as an agricultural conglomerate before pivoting into solar energy, it has become one of the most vertically integrated photovoltaic producers in the world, controlling polysilicon, wafers, cells, and modules under one roof. Its reported annual module capacity exceeds 90 GW and cell capacity surpasses 150 GW. Both carry BNEF Tier 1 recognition, but Tongwei commands a substantially larger institutional footprint and supply-chain depth.

Both manufacturers have converged on N-type TOPCon as their primary cell technology. Sunova's portfolio centers on bifacial dual-glass modules spanning roughly 425 Wp to over 600 Wp, with a stated bifacial gain of up to 30%, targeting industrial rooftop and ground-mounted utility projects; all TOPCon modules carry a 30-year performance warranty and a 15-year product warranty. Tongwei's TW Solar brand covers a broader power range - from compact residential bifacial modules around 450 Wp through commercial and industrial formats to large-format utility products such as the G12R series and a recently announced 770 W module with a confirmed 24.8% efficiency. Tongwei has also reported a 91.7% bifaciality factor on a 722 W TOPCon module, underscoring its competitive edge in high-yield ground-mount applications.

For most international buyers, Tongwei is the stronger default choice given its unmatched manufacturing scale, full vertical integration from polysilicon to finished module, and a portfolio that can serve procurement at virtually any project size. Sunova is a solid and bankable alternative for buyers who prefer a focused mid-tier supplier with a proven Tier 1 track record and a tighter product line. In terms of core cell technology and warranty structure the two brands are broadly comparable, so project pricing and regional supply availability will typically be the deciding factors.

Generated by Claude Sonnet · 2026-07-04