AE Solar vs Longi Solar - solar panel manufacturer comparison

AE Solar was founded in 2003 in Germany and operates as one of Europe's prominent privately-owned solar manufacturers, with a production capacity exceeding 2 GW and an active presence across more than 100 countries. The company employs between 500 and 1,000 people and holds Tier 1 bankable status, making its products eligible for project financing across European and international markets. LONGi Solar, founded in 2000 in China and publicly listed on the Shanghai Stock Exchange, operates at a fundamentally different scale - with a production capacity of 85-90 GW and nearly 38,000 employees, it ranks among the world's largest solar manufacturers by any measure. LONGi likewise holds Tier 1 status and has become a benchmark supplier for large-scale developers globally, underpinned by deep vertical integration across wafers, cells, and modules.

AE Solar's portfolio of 442 modules is led by TOPCon cell technology, which accounts for over 50% of its offerings. The company achieves a maximum module power of 730 Wp and a maximum efficiency of 24.43%, supported by a notably high share of bifacial modules at 63.8% of the portfolio - a strong fit for residential rooftop installations and commercial C&I projects where reflected irradiance can meaningfully boost annual yields. An average product warranty of approximately 29.7 years reinforces the company's long-term reliability positioning and aids bankability for risk-conscious financiers. LONGi Solar's 255-module portfolio, anchored in N-type cell technology, delivers a higher average panel efficiency of 22.65% and a more favorable temperature coefficient of -0.291%/°C compared to AE Solar's -0.313%/°C, meaning LONGi modules lose less output under high ambient temperatures - a relevant advantage for utility-scale ground-mount projects in warm climates. LONGi's maximum module power of 670 Wp and higher average power output of approximately 543 Wp per panel make it particularly well-suited for large-scale projects where power density and procurement economics are decisive. Its lower bifacial share of 39.6% is a relative constraint in bifacial-optimized installations.

For residential installers and commercial C&I integrators, AE Solar presents a compelling European brand identity, a broad bifacial product range, and long warranties that support financing conversations with end customers. LONGi Solar is the stronger choice for utility-scale developers and EPCs prioritizing maximum module efficiency, favorable thermal performance, and the supply-chain security that flows from one of the world's largest solar production bases.

Generated by Claude Sonnet · 2026-05-08