Corab vs JA Solar - solar panel manufacturer comparison

Corab is a Polish manufacturer founded in 1993 in Bartoszyce, employing more than 300 people and operating with a stated production capacity of 2.5 GW. Originally rooted in satellite and construction hardware, the company expanded into solar mounting systems before launching its own Encor-branded PV modules. Its solar panel portfolio is compact at four models, oriented primarily toward the domestic Polish and broader European market, with local warranty fulfilment as a key differentiator. JA Solar, founded in 2005 in China, operates at an entirely different scale: a Tier 1 bankable manufacturer listed on the Shenzhen Stock Exchange, employing nearly 37,300 people, and running a production capacity exceeding 100 GW - roughly forty times that of Corab. Ranked second worldwide by shipment volume, JA Solar supplies markets across Europe, Asia, the Americas, and Australia with a portfolio of 524 panel models ranging up to 740 Wp.

Corab's Encor modules are monocrystalline half-cut panels with no bifacial options currently available, reaching a maximum efficiency of 21% and a peak output of 410 Wp. With an average temperature coefficient of -0.34%/°C, they are well suited for standard residential rooftop installs in temperate climates, and the Polish-issued product warranty simplifies after-sales logistics for local installers. JA Solar's portfolio covers a far broader technological spectrum: PERC technology accounts for roughly 52% of its lineup, while TOPCon-based series push peak efficiency to 24.4% and peak output to 740 Wp. Approximately 44% of JA Solar's panels are bifacial, making them a strong fit for utility-scale ground-mount projects and large commercial C&I installations where rear-side irradiance gain delivers measurable additional yield. An average temperature coefficient of -0.32%/°C and a tenth consecutive "Top Performer" designation in PVEL's 2025 scorecard reinforce JA Solar's suitability for institutionally financed projects.

For residential and small commercial installers in Poland seeking a locally supported product with straightforward warranty logistics, Corab Encor is a practical, fit-for-purpose choice. For buyers prioritising maximum power output, advanced cell technology, bifacial yield gains, or the bankability documentation required for project finance - whether in Poland or internationally - JA Solar's portfolio depth and proven global track record make it the more versatile and widely applicable option.

Generated by Claude Sonnet · 2026-05-13