--- title: "ENCOR vs JA Solar - Brand Comparison | ComparePV" description: "Compare ENCOR vs JA Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/encor-vs-ja-solar" --- # ENCOR vs JA Solar JA Solar has the broader catalog (504 vs 4 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup). ## The two companies | Attribute | ENCOR | JA Solar | | --- | --- | --- | | Country | Poland | China | | Headquarters | Olsztyn | Beijing | | Founded | 1991 | 2005 | | Employees | 200-500 | 37,289 | | Annual capacity | | 100+ GW/year | | Tier 1 | | yes | | Listed | | SZSE: 002459 | | Website | [https://corab.eu/encor](https://corab.eu/encor) | [https://www.jasolar.com](https://www.jasolar.com) | ENCOR is a proprietary solar brand owned by CORAB S.A., a Polish manufacturer and distributor of photovoltaic systems founded in 1991. The brand covers an ecosystem of own-label PV modules, inverters, and energy storage units produced to CORAB's specifications. CORAB is one of the largest photovoltaic mounting... JA Solar is a global leader in the manufacturing of high-performance photovoltaic products. Founded in 2005, the company designs, develops, manufactures, and sells solar cells and modules. JA Solar's products are used in ground-mounted power plants, commercial & industrial rooftop PV systems, and residential rooftop... ## Catalog & Power | Measure | ENCOR | JA Solar | Margin | | --- | --- | --- | --- | | Panel Models | 4 | 504 | +500 | | Max Power | 460 W | 740 W | +280 W | | Avg Power | 411 W | 456 W | +45 W | ## Efficiency | Measure | ENCOR | JA Solar | Margin | | --- | --- | --- | --- | | Max Efficiency | 21.30% | 24.80% | +3.50 pp | | Avg Efficiency | 20.88% | 21.13% | +0.25 pp | ## Reliability & Warranty | Measure | ENCOR | JA Solar | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.344%/°C | -0.322%/°C | +0.022 | | Bifacial Share | 0 (0%) | 238 (47%) | +47 pp | | Avg Warranty | 25.0 yrs | 27.9 yrs | +2.9 yr | ## Efficiency distribution JA Solar skews to higher efficiency: 15% of lineup is 23%+ | Efficiency band | ENCOR | JA Solar | | --- | --- | --- | | 20-21% | 2 (50.0%) | 99 (19.6%) | | 21-22% | 2 (50.0%) | 112 (22.2%) | | \<20% | 0 | 112 (22.2%) | | 22-23% | 0 | 107 (21.2%) | | 23%+ | 0 | 74 (14.7%) | ## Power distribution JA Solar offers more 600W+ panels (14% of lineup) | Power band | ENCOR | JA Solar | | --- | --- | --- | | \<400W | 2 (50.0%) | 142 (28.2%) | | 400-499W | 2 (50.0%) | 173 (34.3%) | | 500-599W | 0 | 120 (23.8%) | | 600-699W | 0 | 60 (11.9%) | | 700W+ | 0 | 9 (1.8%) | ## Cell technology Dominant cell tech: **PERC** (75%) Dominant cell tech: **PERC** (49%) | Technology | ENCOR | JA Solar | | --- | --- | --- | | PERC | 3 (75.0%) | 247 (49.0%) | | TOPCon | 1 (25.0%) | 146 (29.0%) | | N-type | 0 | 90 (17.9%) | | Unknown | 0 | 16 (3.2%) | | HJT | 0 | 5 (1.0%) | ## Top panels, ENCOR | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [EC460M-10-120S](https://comparepv.com/panel/encor-ec460m-10-120s) | 460 | 21.3 | -0.350 | Monocrystalline | | 2 | [EC415M-10-108B-V](https://comparepv.com/panel/encor-ec415m-10-108b-v) | 415 | 21.2 | -0.330 | Monocrystalline | | 3 | [EC395M-10-108FB](https://comparepv.com/panel/encor-ec395m-10-108fb) | 395 | 20.4 | -0.330 | Monocrystalline | | 4 | [EC375M-6-120B](https://comparepv.com/panel/encor-ec375m-6-120b) | 375 | 20.6 | -0.365 | Monocrystalline | ## Top panels, JA Solar | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [JAM66D46-740/LB](https://comparepv.com/panel/ja-solar-jam66d46-740-lb) | 740 | 23.8 | -0.290 | Monocrystalline | | 2 | [JAM66D46-735/LB](https://comparepv.com/panel/ja-solar-jam66d46-735-lb) | 735 | 23.7 | -0.290 | Monocrystalline | | 3 | [JAM66D46-730/LB](https://comparepv.com/panel/ja-solar-jam66d46-730-lb) | 730 | 23.5 | -0.290 | Monocrystalline | | 4 | [JAM66D46-725/LB](https://comparepv.com/panel/ja-solar-jam66d46-725-lb) | 725 | 23.3 | -0.290 | Monocrystalline | | 5 | [JAM66D46-720/LB](https://comparepv.com/panel/ja-solar-jam66d46-720-lb) | 720 | 23.2 | -0.290 | Monocrystalline | | 6 | [JAM66D46-715/LB](https://comparepv.com/panel/ja-solar-jam66d46-715-lb) | 715 | 23.0 | -0.290 | Monocrystalline | | 7 | [JAM66D46-710/LB](https://comparepv.com/panel/ja-solar-jam66d46-710-lb) | 710 | 22.9 | -0.290 | Monocrystalline | | 8 | [JAM66D46-705/LB](https://comparepv.com/panel/ja-solar-jam66d46-705-lb) | 705 | 22.7 | -0.290 | Monocrystalline | | 9 | [JAM66D46-700/LB](https://comparepv.com/panel/ja-solar-jam66d46-700-lb) | 700 | 22.5 | -0.290 | Monocrystalline | | 10 | [JAM66D46-695/LB](https://comparepv.com/panel/ja-solar-jam66d46-695-lb) | 695 | 22.4 | -0.290 | Monocrystalline | ## Summary 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. Written by claude-sonnet from the figures above. ## Other comparisons - [ENCOR vs A.B. Energy](https://comparepv.com/encor-vs-a-b-energy) - [AE Solar vs JA Solar](https://comparepv.com/ae-solar-vs-ja-solar) - [ENCOR vs AEET](https://comparepv.com/encor-vs-aeet) - [AIKO vs JA Solar](https://comparepv.com/aiko-vs-ja-solar) - [ENCOR vs AKCOME](https://comparepv.com/encor-vs-akcome) - [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar) --- Source: https://comparepv.com/encor-vs-ja-solar Not in this file, on the page: the distributions above drawn as charts.