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

# ECODELTA vs JA Solar

JA Solar has the broader catalog (504 vs 13 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | ECODELTA | JA Solar |
| --- | --- | --- |
| Country | France | China |
| Headquarters | La Ciotat | Beijing |
| Founded | 2002 | 2005 |
| Employees |  | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 |  | yes |
| Listed |  | SZSE: 002459 |
| Website | [http://www.ecodelta.fr](http://www.ecodelta.fr) | [https://www.jasolar.com](https://www.jasolar.com) |

EcoDelta is a French developer of wind and solar energy projects. They offer expertise in project management and financing to maximize energy output. The company strives to promote, develop, and operate decentralized renewable electricity projects.

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 | ECODELTA | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 13 | 504 | +491 |
| Max Power | 550 W | 740 W | +190 W |
| Avg Power | 466 W | 456 W | +10 W |


## Efficiency


| Measure | ECODELTA | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 22.54% | 24.80% | +2.26 pp |
| Avg Efficiency | 21.14% | 21.13% | +0.01 pp |


## Reliability & Warranty


| Measure | ECODELTA | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.332%/°C | -0.322%/°C | +0.010 |
| Bifacial Share | 3 (23%) | 238 (47%) | +24 pp |
| Avg Warranty | 26.2 yrs | 27.9 yrs | +1.7 yr |


## Efficiency distribution

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


| Efficiency band | ECODELTA | JA Solar |
| --- | --- | --- |
| 20-21% | 7 (53.8%) | 99 (19.6%) |
| 21-22% | 3 (23.1%) | 112 (22.2%) |
| 22-23% | 3 (23.1%) | 107 (21.2%) |
| \<20% | 0 | 112 (22.2%) |
| 23%+ | 0 | 74 (14.7%) |


## Power distribution

JA Solar offers more 600W+ panels (14% of lineup)


| Power band | ECODELTA | JA Solar |
| --- | --- | --- |
| \<400W | 1 (7.7%) | 142 (28.2%) |
| 400-499W | 7 (53.8%) | 173 (34.3%) |
| 500-599W | 5 (38.5%) | 120 (23.8%) |
| 600-699W | 0 | 60 (11.9%) |
| 700W+ | 0 | 9 (1.8%) |


## Cell technology

Dominant cell tech: **TOPCon** (62%)

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


| Technology | ECODELTA | JA Solar |
| --- | --- | --- |
| TOPCon | 8 (61.5%) | 146 (29.0%) |
| PERC | 5 (38.5%) | 247 (49.0%) |
| N-type | 0 | 90 (17.9%) |
| Unknown | 0 | 16 (3.2%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, ECODELTA


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ECO-550M-72LHC](https://comparepv.com/panel/ecodelta-eco-550m-72lhc) | 550 | 21.3 | -0.350 | Monocrystalline |
| 2 | [ECO-545M-72LHC](https://comparepv.com/panel/ecodelta-eco-545m-72lhc) | 545 | 21.1 | -0.350 | Monocrystalline |
| 3 | [ECO-540M-72LHC](https://comparepv.com/panel/ecodelta-eco-540m-72lhc) | 540 | 20.9 | -0.350 | Monocrystalline |
| 4 | [ECO-535M-72LHC](https://comparepv.com/panel/ecodelta-eco-535m-72lhc) | 535 | 20.7 | -0.350 | Monocrystalline |
| 5 | [ECO-530M-72LHC](https://comparepv.com/panel/ecodelta-eco-530m-72lhc) | 530 | 20.5 | -0.350 | Monocrystalline |
| 6 | [ECO-450M-54LHC-DGBF](https://comparepv.com/panel/ecodelta-eco-450m-54lhc-dgbf) | 450 | 22.5 | -0.290 | Monocrystalline |
| 7 | [ECO-445M-54LHC-DGBF](https://comparepv.com/panel/ecodelta-eco-445m-54lhc-dgbf) | 445 | 22.3 | -0.290 | Monocrystalline |
| 8 | [ECO-440M-54LHC-DGBF](https://comparepv.com/panel/ecodelta-eco-440m-54lhc-dgbf) | 440 | 22.0 | -0.290 | Monocrystalline |
| 9 | [ECO-415M-60SB](https://comparepv.com/panel/ecodelta-eco-415m-60sb) | 415 | 21.2 | -0.340 | Monocrystalline |
| 10 | [ECO-410M-60SB](https://comparepv.com/panel/ecodelta-eco-410m-60sb) | 410 | 20.9 | -0.340 | 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

ECODELTA is a French solar panel manufacturer founded in 2002, positioning itself as a European-origin supplier with a focused catalog of 13 models - a deliberately narrow range that suggests a boutique or niche market approach rather than mass-market competition. The company leads its lineup with TOPCon cell technology, which accounts for roughly 54% of its portfolio, reflecting a strategic bet on next-generation n-type cells. Its top module reaches 550 Wp with a maximum efficiency of 22.54% and an average efficiency of 21.14% across its range. JA Solar, by contrast, is one of the world's largest solar manufacturers: founded in China in 2005, publicly listed on the Shenzhen Stock Exchange (SZSE), employing over 37,000 people, and operating production capacity exceeding 100 GW annually. The company holds Tier 1 bankable status, making it a standard choice for project finance-backed installations worldwide. Its catalog spans 524 models, with a top panel output of 740 Wp and a peak efficiency of 24.4%, while PERC technology still dominates at roughly 52% of its offering alongside a growing TOPCon and bifacial lineup.

In terms of use cases, ECODELTA is well-suited for residential rooftop installations and commercial projects in European markets where buyers prioritize local origin, a modern TOPCon technology stack, and a streamlined product selection. Its average temperature coefficient of -0.3323%/°C and average warranty of approximately 26 years are solid figures for that segment. JA Solar's scale and breadth make it a natural fit across all project types - from residential rooftop installs to large commercial C&I systems and utility-scale ground-mount farms. Its 44.3% bifacial share in the catalog is a notable advantage for ground-mount projects seeking rear-side gain, and its average warranty of nearly 27.85 years edges out ECODELTA's figure. The Tier 1 designation is critical for developers relying on project financing, where lender acceptance of the module brand is a hard requirement.

For international buyers choosing between the two, JA Solar offers far greater product flexibility, proven bankability, and a higher efficiency ceiling (24.4% vs. 22.54%), making it the lower-risk choice for large or finance-dependent projects. ECODELTA appeals to buyers who value European manufacturing provenance, a curated TOPCon-forward catalog, and potentially simpler supply chain logistics within Europe - particularly relevant as European procurement policies increasingly favor non-Chinese origin equipment.

Written by claude-sonnet from the figures above.


## Other comparisons

- [ECODELTA vs A.B. Energy](https://comparepv.com/ecodelta-vs-a-b-energy)
- [AE Solar vs JA Solar](https://comparepv.com/ae-solar-vs-ja-solar)
- [ECODELTA vs AEET](https://comparepv.com/ecodelta-vs-aeet)
- [AIKO vs JA Solar](https://comparepv.com/aiko-vs-ja-solar)
- [ECODELTA vs AKCOME](https://comparepv.com/ecodelta-vs-akcome)
- [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar)


---

Source: https://comparepv.com/ecodelta-vs-ja-solar

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