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

# Hiwatt Solar vs JA Solar

JA Solar has the broader catalog (504 vs 109 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | Hiwatt Solar | JA Solar |
| --- | --- | --- |
| Country |  | China |
| Headquarters |  | Beijing |
| Founded |  | 2005 |
| Employees |  | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 | no | yes |
| Listed |  | SZSE: 002459 |
| Website |  | [https://www.jasolar.com](https://www.jasolar.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...


## Catalog & Power


| Measure | Hiwatt Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 109 | 504 | +395 |
| Max Power | 730 W | 740 W | +10 W |
| Avg Power | 476 W | 456 W | +20 W |


## Efficiency


| Measure | Hiwatt Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.50% | 24.80% | +1.30 pp |
| Avg Efficiency | 20.60% | 21.13% | +0.54 pp |


## Reliability & Warranty


| Measure | Hiwatt Solar | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.340%/°C | -0.322%/°C | +0.018 |
| Bifacial Share | 14 (13%) | 238 (47%) | +34 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 | Hiwatt Solar | JA Solar |
| --- | --- | --- |
| \<20% | 27 (24.8%) | 112 (22.2%) |
| 20-21% | 32 (29.4%) | 99 (19.6%) |
| 21-22% | 27 (24.8%) | 112 (22.2%) |
| 22-23% | 14 (12.8%) | 107 (21.2%) |
| 23%+ | 9 (8.3%) | 74 (14.7%) |


## Power distribution

Hiwatt Solar offers more 600W+ panels (18% of lineup)


| Power band | Hiwatt Solar | JA Solar |
| --- | --- | --- |
| \<400W | 33 (30.3%) | 142 (28.2%) |
| 400-499W | 30 (27.5%) | 173 (34.3%) |
| 500-599W | 26 (23.9%) | 120 (23.8%) |
| 600-699W | 15 (13.8%) | 60 (11.9%) |
| 700W+ | 5 (4.6%) | 9 (1.8%) |


## Cell technology

Dominant cell tech: **PERC** (46%)

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


| Technology | Hiwatt Solar | JA Solar |
| --- | --- | --- |
| PERC | 50 (45.9%) | 247 (49.0%) |
| TOPCon | 33 (30.3%) | 146 (29.0%) |
| Unknown | 21 (19.3%) | 16 (3.2%) |
| N-type | 5 (4.6%) | 90 (17.9%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, Hiwatt Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [HW-M12/132G-730](https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-730) | 730 | 23.5 | -0.340 | Monocrystalline |
| 2 | [HW-M12/132G-725](https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-725) | 725 | 23.3 | -0.340 | Monocrystalline |
| 3 | [HW-M12/132G-720](https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-720) | 720 | 23.2 | -0.340 | Monocrystalline |
| 4 | [HW-M12/132G-715](https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-715) | 715 | 23.0 | -0.340 | Monocrystalline |
| 5 | [HW-M12/132G-710](https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-710) | 710 | 22.9 | -0.340 | Monocrystalline |
| 6 | [HW-M12/132H-670](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-670) | 670 | 21.6 | -0.340 | Monocrystalline |
| 7 | [HW-M12/132H-665](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-665) | 665 | 21.4 | -0.340 | Monocrystalline |
| 8 | [HW-M12/132H-660](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-660) | 660 | 21.2 | -0.340 | Monocrystalline |
| 9 | [HW-M12/132H-655](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-655) | 655 | 21.1 | -0.340 | Monocrystalline |
| 10 | [HW-M12/132H-650](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-650) | 650 | 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

JA Solar is one of the world's largest solar module manufacturers, founded in 2005 and headquartered in China, with shares listed on the Shenzhen Stock Exchange. The company employs over 37,000 people and operates production capacity exceeding 100 GW, placing it firmly among the top-tier global PV suppliers. JA Solar holds Tier 1 bankable status confirmed by multiple independent industry bodies, including S&P Global Commodity Insights, reflecting strong financial resilience and established market presence. Hiwatt Solar, also a Chinese manufacturer, operates at a considerably smaller scale - with an estimated production capacity of approximately 2.2 GW - and does not currently hold Tier 1 bankable status. This disparity in scale and financial standing represents the most consequential distinction between the two companies for buyers evaluating long-term supply security and project financing eligibility.

Both manufacturers lead their respective portfolios with PERC cell technology - JA Solar at 52.1% of its 524-panel catalog, Hiwatt Solar at 45.9% of its 109-panel catalog. JA Solar achieves a higher peak module efficiency of 24.4% versus 23.5% for Hiwatt Solar, and a slightly better average temperature coefficient of Pmax at -0.32%/°C versus -0.34%/°C, translating to a marginal performance advantage in warm operating conditions. JA Solar also offers a substantially higher share of bifacial panels - 44.3% of its catalog compared to 12.8% for Hiwatt Solar - making it a natural fit for utility-scale ground-mount and commercial C&I projects where bifacial energy gain and bankability are prerequisites for institutional financing. Hiwatt Solar's portfolio carries a higher average module power of approximately 475.9 Wp versus 441.7 Wp for JA Solar, which may appeal to residential and small commercial installers seeking maximum output within constrained roof areas. JA Solar's average product warranty of nearly 28 years further exceeds Hiwatt Solar's 25-year average, reinforcing its long-term value proposition.

For international buyers evaluating these two manufacturers - whether for residential rooftop installations, commercial C&I projects, or large utility-scale deployments - JA Solar presents a materially stronger overall case: Tier 1 bankable status, a far wider bifacial product range, longer average warranties, and a globally proven supply chain. Hiwatt Solar may offer a cost-competitive entry point for smaller residential or off-grid applications where bankability is not a financing prerequisite, but for any project requiring institutional backing or grid-scale ambitions, JA Solar is the more defensible long-term choice.

Written by claude-sonnet from the figures above.


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

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