---
title: "JA Solar vs SP Enerji - Brand Comparison | ComparePV"
description: "Compare JA Solar vs SP Enerji solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/ja-solar-vs-sp-enerji"
---

# JA Solar vs SP Enerji

JA Solar has the broader catalog (504 vs 33 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | SP Enerji |
| --- | --- | --- |
| Country | China | Turkey |
| Headquarters | Beijing | Adana |
| Founded | 2005 | 2008 |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year | 1.2 GW/year |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.spenerji.com.tr](https://www.spenerji.com.tr) |

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...

SP Enerji is a solar panel manufacturer and installation company located in Adana, Turkey. Established in 2008, they produce photovoltaic solar panels and offer engineering solutions including consultancy, installation, infrastructure, assembly, commissioning, sales and after-sales technical support services. The...


## Catalog & Power


| Measure | JA Solar | SP Enerji | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 33 | +471 |
| Max Power | 740 W | 410 W | +330 W |
| Avg Power | 456 W | 334 W | +123 W |


## Efficiency


| Measure | JA Solar | SP Enerji | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 20.67% | +4.13 pp |
| Avg Efficiency | 21.13% | 18.56% | +2.57 pp |


## Reliability & Warranty


| Measure | JA Solar | SP Enerji | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.390%/°C | +0.068 |
| Bifacial Share | 238 (47%) | 11 (33%) | +14 pp |
| Avg Warranty | 27.9 yrs | 25.0 yrs | +2.9 yr |


## Efficiency distribution

JA Solar skews to higher efficiency: 15% of lineup is 23%+


| Efficiency band | JA Solar | SP Enerji |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 28 (84.8%) |
| 20-21% | 99 (19.6%) | 5 (15.2%) |
| 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 | SP Enerji |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 30 (90.9%) |
| 400-499W | 173 (34.3%) | 3 (9.1%) |
| 500-599W | 120 (23.8%) | 0 |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

Dominant cell tech: **PERC** (49%)

Dominant cell tech: **PERC** (100%)


| Technology | JA Solar | SP Enerji |
| --- | --- | --- |
| PERC | 247 (49.0%) | 33 (100.0%) |
| 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 |


## Top panels, SP Enerji


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SP-410M72](https://comparepv.com/panel/sp-enerji-sp-410m72) | 410 | 20.7 | -0.370 | Monocrystalline |
| 2 | [SP-405M72](https://comparepv.com/panel/sp-enerji-sp-405m72) | 405 | 20.4 | -0.370 | Monocrystalline |
| 3 | [SP-400M72](https://comparepv.com/panel/sp-enerji-sp-400m72) | 400 | 20.2 | -0.370 | Monocrystalline |
| 4 | [SP-395M72](https://comparepv.com/panel/sp-enerji-sp-395m72) | 395 | 19.9 | -0.370 | Monocrystalline |
| 5 | [SP-390M72](https://comparepv.com/panel/sp-enerji-sp-390m72) | 390 | 19.7 | -0.370 | Monocrystalline |
| 6 | [SP-385M72](https://comparepv.com/panel/sp-enerji-sp-385m72) | 385 | 19.4 | -0.370 | Monocrystalline |
| 7 | [SP-380M72](https://comparepv.com/panel/sp-enerji-sp-380m72) | 380 | 19.6 | -0.380 | Monocrystalline |
| 8 | [SP-375M72](https://comparepv.com/panel/sp-enerji-sp-375m72) | 375 | 19.3 | -0.380 | Monocrystalline |
| 9 | [SP-370M72](https://comparepv.com/panel/sp-enerji-sp-370m72) | 370 | 19.1 | -0.380 | Monocrystalline |
| 10 | [SP-365M72](https://comparepv.com/panel/sp-enerji-sp-365m72) | 365 | 18.8 | -0.380 | Monocrystalline |


## Summary

JA Solar and SP Enerji represent two very different tiers of the global solar PV manufacturing landscape. JA Solar was founded in 2005 in China and has grown into one of the world's largest module producers, with a workforce of over 37,000 employees and an annual production capacity exceeding 100 GW. The company holds Tier 1 status from S&P Global Commodity Insights, is listed on the Shenzhen Stock Exchange, and has shipped nearly 300 GW of modules cumulatively across 178 countries - ranking second globally by shipment volume. SP Enerji, established in 2008 in Adana, Turkey, operates at a far smaller scale with a production capacity of 1.2 GW and does not appear on established Tier 1 bankability lists. Its market reach is concentrated primarily in Turkey and nearby European and Middle Eastern markets.

JA Solar's portfolio of 524 panel models spans a wide range of power classes, with a maximum rated power of 740 Wp, a maximum efficiency of 24.4%, and a portfolio average efficiency of 20.87%. The lineup is predominantly PERC-based (52.1%) but also includes modern TOPCon modules, and 44.3% of panels are bifacial - making JA Solar well suited for utility-scale ground-mount and large commercial C&I projects where bifacial yield gains are significant. A low average temperature coefficient of -0.323%/°C per Pmax and an average warranty period of 27.85 years further strengthen its appeal for long-term bankable investments. SP Enerji's portfolio is narrower - 33 models, all PERC, with a maximum power of 410 Wp and a portfolio average efficiency of 18.56%. Its average temperature coefficient of -0.390%/°C is notably weaker, which can reduce output in hot climates. SP Enerji's primary advantage lies in its European-adjacent manufacturing base, which may be relevant for buyers who prefer or require non-Chinese supply chains, shorter delivery lead times, or compliance with local content preferences in certain tenders.

For international buyers choosing between the two, JA Solar offers superior technology breadth, proven bankability, and a global after-sales network, making it the default choice for utility-scale, C&I, and institutional residential projects. SP Enerji may appeal to niche buyers in European or Turkish markets where supply chain diversification or non-Chinese origin requirements take priority over peak technical performance.

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 SP Enerji](https://comparepv.com/ae-solar-vs-sp-enerji)
- [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet)
- [AIKO vs SP Enerji](https://comparepv.com/aiko-vs-sp-enerji)
- [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome)
- [ARTsolar vs SP Enerji](https://comparepv.com/artsolar-vs-sp-enerji)


---

Source: https://comparepv.com/ja-solar-vs-sp-enerji

Not in this file, on the page: the distributions above drawn as charts.