ENCOR vs JA Solar - solar panel manufacturer comparison

ENCOR is a solar module brand developed by Corab S.A., Poland's largest manufacturer of renewable energy system components, founded in 1991 and employing between 200 and 500 people. Corab positions ENCOR as a custom-order module line manufactured to its own specifications, backed by a local Polish warranty and distributed through its extensive national supply network. JA Solar, founded in 2005 and headquartered in China, operates at an entirely different scale - it is a publicly listed company on the Shenzhen Stock Exchange with over 37,000 employees, a Tier 1 bankable rating confirmed by S&P Global Commodity Insights, and cumulative global shipments approaching 300 GW. JA Solar consistently ranks among the top four module manufacturers worldwide by shipment volume, with an annual production capacity exceeding 100 GW and sales presence spanning multiple continents.

JA Solar's portfolio of 524 distinct module variants spans PERC and TOPCon cell technologies, reaching a maximum output of 740 Wp and a top panel efficiency of 24.4%, with an average module delivering approximately 442 Wp at around 20.9% efficiency. Nearly 44% of its lineup consists of bifacial designs and the average warranty across the portfolio is close to 28 years, making JA Solar well-suited for utility-scale ground-mount projects, large commercial and industrial rooftop installations, and any project where bankability and independently verified reliability - including ten consecutive "Top Performer" designations in PVEL scorecard testing - are prerequisites. ENCOR, by contrast, offers a more focused range of modules from 410 to 505 W, with a competitive advantage concentrated in the Polish and Central European residential market, particularly for prosumer rooftop installations on pitched roofs where local after-sales support, domestic logistics, and Polish-language service from the Corab distribution network are valued over global scale.

For international buyers choosing between the two, JA Solar is the clear choice wherever project financing, verified performance data, and supply chain scale are decisive factors. For installers and homeowners operating primarily within Poland who prioritize local warranty support and supply proximity, ENCOR/Corab represents a credible domestic alternative - though its portfolio depth and the volume of independent performance data available are considerably more limited by comparison.

Generated by Claude Sonnet · 2026-05-13