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

# DAH Solar vs Longi Solar

DAH Solar has the broader catalog (363 vs 255 models). Longi Solar leads on peak efficiency at 25.00%. DAH Solar leans bifacial (87% of lineup).


## The two companies


| Attribute | DAH Solar | Longi Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Hefei | Xi'an, Shaanxi |
| Founded | 2009 | 2000 |
| Employees | 2000+ | 37,853 |
| Annual capacity | 10 GW/year | 85-90 GW/year |
| Tier 1 | yes | yes |
| Listed |  | Shanghai Stock Exchange: 601012 |
| Website | null | [https://www.longi.com](https://www.longi.com) |

DAH Solar is an innovation-driven and technology-leading company specializing in PV product manufacturing. They focus on R&D, manufacturing, and sales of high-efficiency PV modules, integrated PV systems, and solar energy storage systems. DAH Solar is known for its patented Full-Screen PV Module and SolarUnit...

LONGi Green Energy Technology Co., Ltd. is a world-leading solar technology company that manufactures monocrystalline silicon wafers and modules. The company is committed to providing high-efficiency and reliable clean energy solutions for large-scale power plants, various industries, and households. LONGi aims to be...


## Catalog & Power


| Measure | DAH Solar | Longi Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 363 | 255 | +108 |
| Max Power | 725 W | 670 W | +55 W |
| Avg Power | 520 W | 544 W | +23 W |


## Efficiency


| Measure | DAH Solar | Longi Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.34% | 25.00% | +1.66 pp |
| Avg Efficiency | 22.10% | 22.65% | +0.54 pp |


## Reliability & Warranty


| Measure | DAH Solar | Longi Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.299%/°C | -0.291%/°C | +0.008 |
| Bifacial Share | 316 (87%) | 101 (40%) | +47 pp |
| Avg Warranty | 29.4 yrs | 27.8 yrs | +1.5 yr |


## Efficiency distribution

Longi Solar skews to higher efficiency: 43% of lineup is 23%+


| Efficiency band | DAH Solar | Longi Solar |
| --- | --- | --- |
| \<20% | 10 (2.8%) | 3 (1.2%) |
| 20-21% | 22 (6.1%) | 26 (10.2%) |
| 21-22% | 86 (23.7%) | 47 (18.4%) |
| 22-23% | 217 (59.8%) | 70 (27.5%) |
| 23%+ | 28 (7.7%) | 109 (42.7%) |


## Power distribution

Longi Solar offers more 600W+ panels (38% of lineup)


| Power band | DAH Solar | Longi Solar |
| --- | --- | --- |
| \<400W | 8 (2.2%) | 8 (3.1%) |
| 400-499W | 161 (44.4%) | 81 (31.8%) |
| 500-599W | 113 (31.1%) | 70 (27.5%) |
| 600-699W | 71 (19.6%) | 96 (37.6%) |
| 700W+ | 10 (2.8%) | 0 |


## Cell technology

Dominant cell tech: **TOPCon** (88%)

Dominant cell tech: **N-type** (42%)


| Technology | DAH Solar | Longi Solar |
| --- | --- | --- |
| TOPCon | 319 (87.9%) | 0 |
| PERC | 44 (12.1%) | 51 (20.0%) |
| N-type | 0 | 107 (42.0%) |
| Unknown | 0 | 55 (21.6%) |
| Back Contact | 0 | 42 (16.5%) |


## Top panels, DAH Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [DHN-66Y18/DG-725](https://comparepv.com/panel/dah-dhn-66y18-dg-725) | 725 | 23.3 | -0.290 | Monocrystalline |
| 2 | [DHN-66Y18/DG-720](https://comparepv.com/panel/dah-dhn-66y18-dg-720) | 720 | 23.2 | -0.290 | Monocrystalline |
| 3 | [DHN-66Y18/DG-715](https://comparepv.com/panel/dah-dhn-66y18-dg-715) | 715 | 23.0 | -0.290 | Monocrystalline |
| 4 | [DAS-DH132NC-715](https://comparepv.com/panel/dah-solar-das-dh132nc-715) | 715 | 23.0 | -0.280 | Monocrystalline |
| 5 | [DHN-66Y18/DG-710](https://comparepv.com/panel/dah-dhn-66y18-dg-710) | 710 | 22.9 | -0.290 | Monocrystalline |
| 6 | [DAS-DH132NC-710](https://comparepv.com/panel/dah-solar-das-dh132nc-710) | 710 | 22.9 | -0.280 | Monocrystalline |
| 7 | [DHN-66Y18/DG-705](https://comparepv.com/panel/dah-dhn-66y18-dg-705) | 705 | 22.7 | -0.290 | Monocrystalline |
| 8 | [DAS-DH132NC-705](https://comparepv.com/panel/dah-solar-das-dh132nc-705) | 705 | 22.7 | -0.280 | Monocrystalline |
| 9 | [DHN-66Y18/DG-700](https://comparepv.com/panel/dah-dhn-66y18-dg-700) | 700 | 22.5 | -0.290 | Monocrystalline |
| 10 | [DAS-DH132NC-700](https://comparepv.com/panel/dah-solar-das-dh132nc-700) | 700 | 22.5 | -0.280 | Monocrystalline |


## Top panels, Longi Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 | 24.8 | -0.260 | Monocrystalline |
| 2 | [LR8-66HYD-670M](https://comparepv.com/panel/longi-lr8-66hyd-670m) | 670 | 24.8 | -0.260 | Monocrystalline |
| 3 | [LR7-72HVH-670M](https://comparepv.com/panel/longi-lr7-72hvh-670m) | 670 | 24.8 | -0.260 | Monocrystalline |
| 4 | [LR7-72HVHF-665M](https://comparepv.com/panel/longi-lr7-72hvhf-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 5 | [LR7-72HVDF-665M](https://comparepv.com/panel/longi-lr7-72hvdf-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 6 | [LR8-66HVD-665M](https://comparepv.com/panel/longi-lr8-66hvd-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 7 | [LR8-66HYD-665M](https://comparepv.com/panel/longi-lr8-66hyd-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 8 | [LR7-72HVD-665M](https://comparepv.com/panel/longi-lr7-72hvd-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 9 | [LR7-72HVH-665M](https://comparepv.com/panel/longi-lr7-72hvh-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 10 | [LR7-72HVHF-660M](https://comparepv.com/panel/longi-lr7-72hvhf-660m) | 660 | 24.4 | -0.260 | Monocrystalline |


## Summary

DAH Solar and Longi Solar are both Chinese, Tier 1 bankable PV module manufacturers, but they occupy markedly different positions in the global market. Longi was founded in 2000 and is publicly listed on the Shanghai Stock Exchange, with a production capacity of 85-90 GW and approximately 37,853 employees - figures that place it firmly among the world's largest solar module producers. DAH Solar was established in 2009 and operates at a considerably smaller scale, with a 10 GW production capacity and over 2,000 employees, though it has built meaningful international reach, with Europe and Latin America among its core markets. Both companies carry Tier 1 bankable status, satisfying the due-diligence requirements of most lenders and project financiers.

On the technology side, DAH Solar has built its portfolio strongly around TOPCon cell technology, which accounts for 79.6% of its 363-model lineup. Maximum panel efficiency reaches 23.34% with an average portfolio efficiency of 22.1%, and a notably high bifacial share of 87% - making the range well suited to residential rooftop installs, dual-axis tracker systems, and ground-mount projects where rear-side energy gain is valued. The average warranty across DAH Solar's portfolio stands at 29.4 years. Longi focuses on its proprietary N-type cell platform, including the high-performance HPBC architecture, achieving a maximum module efficiency of 25% and an average portfolio efficiency of 22.6%. With an average output of 543.5 Wp across 255 models, Longi's portfolio is a natural fit for utility-scale ground-mount projects, commercial C&I installations, and any deployment where top-tier efficiency and the financial credibility of a publicly traded counterparty are priorities.

For international buyers, the decision between the two will depend largely on project scale and procurement priorities. DAH Solar offers a broad, bifacial-heavy TOPCon portfolio with an above-average warranty period and strong availability in the European market, making it a compelling option for residential and small-to-mid-scale commercial projects. Longi's combination of exceptional peak efficiency, massive production scale, and established global brand recognition makes it the preferred choice for large-scale projects where banks, investors, and developers require a manufacturer with a long and verifiable track record. Both brands are fully bankable, so neither poses a financing obstacle in standard project scenarios.

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/dah-solar-vs-longi-solar

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