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

# DMEGC vs Longi Solar

Longi Solar has the broader catalog (255 vs 150 models). Longi Solar leads on peak efficiency at 25.00%. DMEGC leans bifacial (73% of lineup).


## The two companies


| Attribute | DMEGC | Longi Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Dongyang, Zhejiang Province | Xi'an, Shaanxi |
| Founded | 1980 | 2000 |
| Employees | 18,831 | 37,853 |
| Annual capacity | 21 GW/year | 85-90 GW/year |
| Tier 1 | yes | yes |
| Listed | Shenzhen Stock Exchange: SZ: 002056 | Shanghai Stock Exchange: 601012 |
| Website | [https://www.dmegcsolar.com](https://www.dmegcsolar.com) | [https://www.longi.com](https://www.longi.com) |

DMEGC Solar, founded in 1980, is a global provider of renewable energy solutions, specializing in high-efficiency solar panels for residential, commercial, and utility-scale projects. The company has six manufacturing bases and is known for its integrated supply chain, from wafers to modules. DMEGC Solar is committed...

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 | DMEGC | Longi Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 150 | 255 | +105 |
| Max Power | 720 W | 670 W | +50 W |
| Avg Power | 476 W | 544 W | +68 W |


## Efficiency


| Measure | DMEGC | Longi Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.50% | 25.00% | +1.50 pp |
| Avg Efficiency | 21.39% | 22.65% | +1.26 pp |


## Reliability & Warranty


| Measure | DMEGC | Longi Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.291%/°C | -0.291%/°C | +0.000 |
| Bifacial Share | 109 (73%) | 101 (40%) | +33 pp |
| Avg Warranty | 30.0 yrs | 27.8 yrs | +2.2 yr |


## Efficiency distribution

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


| Efficiency band | DMEGC | Longi Solar |
| --- | --- | --- |
| \<20% | 24 (16.0%) | 3 (1.2%) |
| 20-21% | 4 (2.7%) | 26 (10.2%) |
| 21-22% | 11 (7.3%) | 47 (18.4%) |
| 22-23% | 79 (52.7%) | 70 (27.5%) |
| 23%+ | 32 (21.3%) | 109 (42.7%) |


## Power distribution

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


| Power band | DMEGC | Longi Solar |
| --- | --- | --- |
| \<400W | 19 (12.7%) | 8 (3.1%) |
| 400-499W | 89 (59.3%) | 81 (31.8%) |
| 500-599W | 23 (15.3%) | 70 (27.5%) |
| 600-699W | 14 (9.3%) | 96 (37.6%) |
| 700W+ | 5 (3.3%) | 0 |


## Cell technology

Dominant cell tech: **TOPCon** (73%)

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


| Technology | DMEGC | Longi Solar |
| --- | --- | --- |
| TOPCon | 109 (72.7%) | 0 |
| N-type | 41 (27.3%) | 107 (42.0%) |
| Unknown | 0 | 55 (21.6%) |
| PERC | 0 | 51 (20.0%) |
| Back Contact | 0 | 42 (16.5%) |


## Top panels, DMEGC


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [DM720G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm720g12t-b66hsw) | 720 | 23.2 | -0.290 | Monocrystalline |
| 2 | [DM715G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm715g12t-b66hsw) | 715 | 23.0 | -0.290 | Monocrystalline |
| 3 | [DM710G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm710g12t-b66hsw) | 710 | 22.9 | -0.290 | Monocrystalline |
| 4 | [DM705G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm705g12t-b66hsw) | 705 | 22.7 | -0.290 | Monocrystalline |
| 5 | [DM700G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm700g12t-b66hsw) | 700 | 22.5 | -0.290 | Monocrystalline |
| 6 | [DM695G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm695g12t-b66hsw) | 695 | 22.4 | -0.290 | Monocrystalline |
| 7 | [DM650M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm650m10t-b78hsw) | 650 | 23.3 | -0.290 | Monocrystalline |
| 8 | [DM645M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm645m10t-b78hsw) | 645 | 23.1 | -0.290 | Monocrystalline |
| 9 | [DM640M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm640m10t-b78hsw) | 640 | 22.9 | -0.290 | Monocrystalline |
| 10 | [DM635G12RT-B66HSW](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dm635g12rt-b66hsw) | 635 | 23.5 | -0.290 | 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

DMEGC is a Chinese manufacturer founded in 1980, headquartered in Dongyang, Zhejiang Province, and operating as a subsidiary of the privately held Hengdian Group, with shares listed on the Shenzhen Stock Exchange since 2006. In 2025, the company secured BloombergNEF Tier 1 and S&P Global Tier 1 status, and Wood Mackenzie ranked it fifth globally among solar module manufacturers. Annual module capacity stands at approximately 21 GW, with over 80 GW in cumulative shipments; first-half 2025 deliveries reached 13.4 GW, up 64% year on year. LONGi Solar was founded in 2000 in Xi'an, Shaanxi, initially as a monocrystalline silicon wafer specialist, and has grown into one of the largest solar manufacturers in the world, holding BloombergNEF Tier 1 status consistently. In Q1 2026 it became the first manufacturer to simultaneously earn double Tier 1 rankings for both PV modules and energy storage. Its HPBC 2.0 cell capacity, including collaborative production, exceeded 57 GW, and module shipment guidance for 2026 stands at around 80 GW. It also holds a PV-Tech AAA bankability rating. In terms of institutional footprint and lending-community recognition, LONGi operates in a different weight class.

DMEGC's current flagship is the Infinity RT TOPCon series, which reached 23.5% module efficiency and 635 W output as of late 2025 - on par with other top-ten peers. The company covers residential rooftop, commercial and industrial, and utility-scale ground-mount markets across more than 80 countries. LONGi structures its catalog by end use: the Hi-MO 9 series, based on HPBC 2.0 cells, targets utility-scale ground-mount projects with up to 670 W and 24.8% efficiency, while the 2025-launched EcoLife brand serves residential rooftops through the Hi-MO X10 (HPBC 2.0, up to 500 W at 24.5% efficiency) and the premium Hi-MO S10, which uses a proprietary HIBC cell combining heterojunction and back-contact technology to achieve 27.3% cell efficiency. The full EcoLife range carries a 30-year product and performance warranty.

For buyers prioritizing bankability and long-term performance guarantees - particularly at utility scale or in project-financed settings - LONGi is the stronger default. DMEGC is a credible, fully bankable Tier 1 alternative that competes well on value in C&I and residential segments where its TOPCon modules deliver solid efficiency at competitive price points. The two brands are not interchangeable in scale or technology depth, but both represent low-risk procurement choices for standard tenders.

Written by claude-sonnet from the figures above.


## Other comparisons

- [DMEGC vs A.B. Energy](https://comparepv.com/dmegc-vs-a-b-energy)
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- [DMEGC vs AEET](https://comparepv.com/dmegc-vs-aeet)
- [AIKO vs Longi Solar](https://comparepv.com/aiko-vs-longi-solar)
- [DMEGC vs AKCOME](https://comparepv.com/dmegc-vs-akcome)
- [ARTsolar vs Longi Solar](https://comparepv.com/artsolar-vs-longi-solar)


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

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