--- title: "JA Solar vs Sirius PV - Brand Comparison | ComparePV" description: "Compare JA Solar vs Sirius PV solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/ja-solar-vs-sirius-pv" --- # JA Solar vs Sirius PV JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup). ## The two companies | Attribute | JA Solar | Sirius PV | | --- | --- | --- | | Country | China | Turkey | | Headquarters | Beijing | Ankara | | Founded | 2005 | 2021 | | Employees | 37,289 | 500-1000 | | Annual capacity | 100+ GW/year | 3-5 GW/year | | Tier 1 | yes | | | Listed | SZSE: 002459 | | | Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://siriuspv.com](https://siriuspv.com) | 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... Sirius PV is a solar photovoltaic module manufacturer established in 2021 as a brand and subsidiary of Elin A.Ş., a Turkish industrial group founded in 1981. The company operates multiple automated production facilities across Europe and the United States, with a combined capacity of over 3.5 GW, positioning itself as... ## Catalog & Power | Measure | JA Solar | Sirius PV | Margin | | --- | --- | --- | --- | | Panel Models | 504 | 0 | +504 | | Max Power | 740 W | 0 W | +740 W | | Avg Power | 456 W | 0 W | +456 W | ## Efficiency | Measure | JA Solar | Sirius PV | Margin | | --- | --- | --- | --- | | Max Efficiency | 24.80% | - | | | Avg Efficiency | 21.13% | - | | ## Reliability & Warranty | Measure | JA Solar | Sirius PV | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.322%/°C | - | | | Bifacial Share | 238 (47%) | 0 (0%) | +47 pp | | Avg Warranty | 27.9 yrs | - | | ## Efficiency distribution JA Solar skews to higher efficiency: 15% of lineup is 23%+ | Efficiency band | JA Solar | Sirius PV | | --- | --- | --- | | \<20% | 112 (22.2%) | 0 | | 20-21% | 99 (19.6%) | 0 | | 21-22% | 112 (22.2%) | 0 | | 22-23% | 107 (21.2%) | 0 | | 23%+ | 74 (14.7%) | 0 | ## Power distribution JA Solar offers more 600W+ panels (14% of lineup) | Power band | JA Solar | Sirius PV | | --- | --- | --- | | \<400W | 142 (28.2%) | 0 | | 400-499W | 173 (34.3%) | 0 | | 500-599W | 120 (23.8%) | 0 | | 600-699W | 60 (11.9%) | 0 | | 700W+ | 9 (1.8%) | 0 | ## Cell technology Dominant cell tech: **PERC** (49%) | Technology | JA Solar | Sirius PV | | --- | --- | --- | | PERC | 247 (49.0%) | 0 | | TOPCon | 146 (29.0%) | 0 | | N-type | 90 (17.9%) | 0 | | Unknown | 16 (3.2%) | 0 | | HJT | 5 (1.0%) | 0 | ## 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 JA Solar, founded in 2005 and headquartered in China, is one of the world's largest solar panel manufacturers, with over 37,000 employees and production capacity exceeding 100 GW. The company is listed on the Shenzhen Stock Exchange and holds Tier 1 bankable status, making it a standard benchmark for project finance worldwide. Sirius PV was established in 2021 in Turkey as a subsidiary of Elin Energy - a group with industrial roots dating back to 1981. With an estimated 500-1,000 employees and production capacity in the 3-5 GW range, it is a considerably smaller operation, though it maintains manufacturing facilities in both Turkey and Texas, positioning itself as a non-Chinese supply option in an increasingly supply-chain-conscious market. JA Solar's portfolio of 524 panel models spans a wide power range up to 740 Wp, with an average efficiency of approximately 20.9% and a peak of 24.4%. PERC technology dominates the catalogue at over 52% of models, while the TOPCon-based DeepBlue 4.0 Pro series reaches efficiencies up to 23.3% and outputs up to 650 Wp, making JA Solar well suited to residential rooftop installs, commercial C&I projects, and utility-scale ground-mount deployments. Nearly 44% of the portfolio is bifacial, a strong fit for single-axis tracker systems. Sirius PV markets its modules around AI-assisted quality control and TÜV-verified low degradation rates, but its technical panel data is not yet represented in major comparable databases, which limits direct specification-level analysis at this stage. For international buyers selecting between the two, JA Solar offers a mature, Tier 1-rated solution with a two-decade track record, broad product selection, and highly competitive pricing supported by massive manufacturing scale. Sirius PV may appeal specifically to buyers seeking supply-chain diversification away from Chinese manufacturers - its Turkish and US manufacturing footprint is a genuine differentiator - but the limited availability of independent performance data means additional due diligence is advisable before committing to large-volume orders. Written by claude-sonnet from the figures above. ## Other comparisons - [JA Solar vs A.B. Energy](https://comparepv.com/ja-solar-vs-a-b-energy) - [AE Solar vs Sirius PV](https://comparepv.com/ae-solar-vs-sirius-pv) - [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet) - [AIKO vs Sirius PV](https://comparepv.com/aiko-vs-sirius-pv) - [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome) - [ARTsolar vs Sirius PV](https://comparepv.com/artsolar-vs-sirius-pv) --- Source: https://comparepv.com/ja-solar-vs-sirius-pv Not in this file, on the page: the distributions above drawn as charts.