JA Solar vs YS Solar - solar panel manufacturer comparison

JA Solar, founded in 2005 and headquartered in China, is one of the world's largest solar module manufacturers, with over 37,000 employees and a total production capacity exceeding 100 GW. The company is listed on the Shenzhen Stock Exchange (SZSE) and holds confirmed Tier 1 bankable status recognized by Bloomberg and S&P Global Commodity Insights - a designation reflecting financial credibility for project financing. JA Solar jointly topped Wood Mackenzie's Global Solar Module Manufacturer Ranking for H1 2025 and earned PVEL Top Performer status for the tenth consecutive time. YS Solar (Guangdong Yaosheng Solar Technology Co., Ltd.) is a considerably smaller Chinese manufacturer, founded in 2009. With only 5 panel models in its portfolio, a maximum output of 350 Wp, unspecified cell technology, and no Tier 1 listing or stock exchange presence, YS Solar operates at a significantly lower tier in terms of market reach, financial backing, and publicly verifiable product data.

JA Solar's portfolio of 524 panel models spans a wide range of applications. Its bifacial modules - representing approximately 44% of the lineup - are well suited to utility-scale ground-mount projects and commercial C&I installations, while its standard monofacial PERC modules cover residential rooftop installs effectively. Maximum efficiency reaches 24.4%, average efficiency sits at 20.87%, average warranty coverage approaches 28 years, and the average temperature coefficient of -0.32%/°C is a measurable advantage under warm operating conditions. The expanding TOPCon line under the DeepBlue 4.0 Pro and DeepBlue 5.0 series adds further options for high-yield projects. YS Solar's five models are all monofacial, peak at 350 Wp and 21% efficiency, and carry a slightly less favorable temperature coefficient of -0.35%/°C, limiting the portfolio to small-scale or low-budget residential use cases.

For international buyers - EPC contractors, procurement managers, or independent installers - JA Solar is the well-supported choice across all project scales, backed by a global supply chain, extensive third-party reliability testing, and strong bankability credentials. YS Solar may be considered only in highly cost-sensitive scenarios where the buyer has direct means of independently verifying product quality, given the absence of publicly available Tier 1 certification and limited market transparency.

Generated by Claude Sonnet · 2026-05-13