---
title: "Longi Solar LR5-54HTH-415M Solar Panel: Specs & Datasheet | ComparePV"
description: "Longi Solar LR5-54HTH-415M solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient."
source: "https://comparepv.com/panel/longi-lr5-54hth-415m"
image: "https://comparepv.com/og/panel/longi-lr5-54hth-415m.png"
updated: 2026-09-11
---

# Longi Solar LR5-54HTH-415M

Middle of its segment, short guarantee

6,941 panels in the 315-515 W band, all technologies


## Identity

- **Manufacturer:** Longi Solar
- **Model:** LR5-54HTH-415M
- **Series:** Hi-MO 6 Explorer
- **Rated power:** 415 W
- **Cell technology:** Monocrystalline


## How it compares

Compared against 315-515 W band, all technologies (6941 panels).


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Power (Wp) | 415 W | 440 W | Typical |  |
| Module efficiency | 21.30% | 21.48% | Typical | 8,585 |
| Power density | 212.5 | 214.7 | Typical | 8,858 |
| Temperature coefficient | -0.290 | -0.300 | Typical | 2,220 |
| Weight (kg) | 20.8 kg | 23.0 kg | Typical |  |
| Performance warranty | 25 yrs | 30 yrs | Weak - bottom 18% | 9,912 |


### Full peer table


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Module efficiency | 21.30% | 21.48% | Typical | 8,585 |
| Power density | 212.5 | 214.7 | Typical | 8,858 |
| Temperature coefficient | -0.290 | -0.300 | Typical | 2,220 |
| Weight per kWp | 50.1 | 53.1 | Typical | 3,642 |
| Performance warranty | 25 yrs | 30 yrs | Weak - bottom 18% | 9,912 |


### Watch out for

- **25 year performance warranty** - Bottom 18% of the 315-515 W band, against a median of 30 yrs.

- **Best for:** Residential, commercial, hot-climate and cold-climate.
- **Not ideal for:** Owners who want a long output guarantee.


## Specification


### Electrical

- **Rated power (Pmax):** 415 W
- **Efficiency:** 21.30 %
- **Voltage at Pmax (Vmp):** 32.24 V
- **Current at Pmax (Imp):** 12.88 A
- **Open-circuit voltage (Voc):** 38.53 V
- **Short-circuit current (Isc):** 13.92 A
- **Max system voltage:** 1500 V


### Temperature

- **Temperature coefficient of Pmax:** -0.290 %/degC
- **Temperature coefficient of Voc:** -0.230 %/degC
- **Temperature coefficient of Isc:** 0.050 %/degC
- **NOCT:** 45 degC


### Cell and construction

- **Cell type:** Monocrystalline
- **Cell count:** 108


### Physical

- **Length:** 1722 mm
- **Width:** 1134 mm
- **Thickness:** 30 mm
- **Weight:** 20.8 kg
- **Area:** 1.95 m2
- **Power density:** 212.5 Wp/m2


### Warranty and degradation

- **Product warranty:** 15 years
- **Performance warranty:** 25 years
- **Output guaranteed at end of warranty:** 88.9 %
- **First-year degradation:** 1.50 %
- **Annual degradation:** 0.40 %
- **Output after 30 years:** 361 W


## Rank in the whole catalogue


| Measure | Position |
| --- | --- |
| Efficiency | 8585 of 14129 |
| Power density | 8858 of 14129 |
| Temperature coefficient | 2220 of 14129 |
| Weight | 3642 of 14129 |
| Warranty | 9912 of 14129 |


## Pros

- **HPBC back-contact technology** - HPBC cells move electrical connections to the rear of the module, eliminating visible front-side busbars. The result is a uniform, all-black premium appearance plus reduced shading losses from busbars, translating into real gains under partial-shading conditions.
- **21.3% efficiency - top of segment** - At 415 Wp, the 21.3% efficiency slightly edges out direct peers in the same power class: LEDVANCE M395~415P54LM-BF-F3 (21.25%), AE Solar AURORA AE MD-108 (21.28%), and Aptos Solar DNA 108 (21.25%).
- **Tier-1, bankable manufacturer** - Longi Solar (founded 2000, headquartered in China) has for years been one of the world's largest module manufacturers, consistently rated Tier-1 by BNEF. This bankability simplifies project financing and insurance.
- **Full rear soldering** - Full rear-side soldering increases resistance to microcracks arising during transport and installation, improving the module's long-term mechanical reliability.
- **Solid fit for residential and small C&I** - The compact 415 Wp monofacial mono-crystalline format works well on typical pitched roofs, combining premium aesthetics with solid performance parameters without the price premium associated with bifacial technology.


## Cons

- **Production ended in 2023** - The Hi-MO 6 Explorer series launched in 2022 and was already discontinued in 2023, superseded by the Hi-MO X6 Explorer line with higher HPBC cell efficiency (>25.5%). This short lifecycle means limited availability of service, spare parts, and identical matching modules for future array expansion.
- **No bifacial variant available** - The panel is monofacial only, ruling out additional energy yield from rear-side light reflection available in competing bifacial designs when installed over light-reflective surfaces or ground-mounted racking.
- **Standard, not leading, warranty terms** - 15 years product and 25 years power warranty are typical for the segment rather than differentiating. Several newer N-type TOPCon panels on the market now offer 25-year product and 30-year linear power warranties.
- **Marginal efficiency edge over peers** - The efficiency gap versus comparable models (21.3% vs 21.25-21.28%) is just 0.02-0.05 percentage points, which in practice delivers negligible energy advantage despite the premium HPBC positioning.


## About this series

The Longi Solar Hi-MO 6 Explorer series was designed to squeeze more energy out of every square meter of installation under real-world operating conditions - especially during hot summer months or when solar irradiance is weaker. The key advantage here is **HPBC (back-contact) cell technology**, which relocates electrical connections to the rear side of the cell. This results in not only higher performance but also a more uniform, modern appearance without visible busbars - delivering **premium aesthetics** highly valued on residential rooftops.

In practice, the Explorer addresses typical investor challenges: it enables **greater energy yield** from the same installation area and performs better under partial shading conditions. Additionally, **full rear welding** is employed, enhancing resistance to micro-cracks and improving durability during transportation and on the roof.


## Notable figures

- Module efficiency of 21.3% is 0.5pp below average for \*\*database\*\* panels (median: 21.8%)
- Power density of 212.5 W/m² is 5.6 W/m² below \*\*database\*\* median (218.1 W/m²) - needs more roof space
- Temperature coefficient of -0.29%/°C matches the \*\*database\*\* median
- 20.8 kg weight - 5.7 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort
- #8585 for efficiency, #2220 for temperature performance out of 14129 panels


## Questions


### What makes the HPBC cell technology in the Longi Solar Hi-MO 6 Explorer series stand out?

HPBC (Hybrid Passivated Back Contact) moves all electrical contacts to the rear of the cell, eliminating front-side busbars. This allows the front surface to absorb more light, improving conversion efficiency and boosting output under low irradiance and oblique light conditions. As a side effect, the module has a uniform, busbar-free appearance that is particularly valued in residential rooftop installations.


### How does the Longi Hi-MO 6 Explorer handle high temperatures in summer?

The Hi-MO 6 Explorer performs better in heat than most standard modules. Its temperature coefficient of Pmax is only -0.29%/°C, compared to approximately -0.35%/°C for typical PERC cells. This means smaller power losses during hot summer afternoons when rooftop temperatures peak. The HPBC cell architecture is a key contributor to this lower thermal sensitivity, delivering a tangible real-world yield advantage.


### What warranty does the Longi Solar Hi-MO 6 Explorer come with?

Longi Solar provides a 15-year product warranty covering manufacturing defects and a 25-year linear power output warranty. After 25 years of operation, the module is guaranteed to retain at least 88.9% of its nominal power. As a Tier 1 manufacturer, Longi Solar has the financial standing to back these warranties for the full operational lifetime of the system.


### Are the Longi Hi-MO 6 Explorer panels bifacial? Can they be used on pergolas or elevated structures?

No, the Hi-MO 6 Explorer is a monofacial module - energy is generated from the front side only. It is not suitable for applications that rely on reflected albedo light, such as pergolas, carports over light-colored surfaces, or agri-PV installations. For standard pitched roof installations this is not a limitation, since rear-side irradiance is negligible in that context anyway.


### Is the Longi Solar Hi-MO 6 Explorer series still available for purchase?

The Hi-MO 6 Explorer series has been discontinued. Longi Solar replaced it with the updated Hi-MO X6 Explorer line, which features a next-generation HPBC cell design. Some remaining stock may still be available through distributors, but complete deliveries for new projects cannot be guaranteed. If you are planning a new installation, ask your supplier about current availability within the X6 or newer product lines.


### How much energy will a system built from Longi Hi-MO 6 Explorer 415 W panels produce annually?

Under typical Central European irradiance (roughly 1,000-1,100 kWh/m² per year), a single 415 W panel generates approximately 370-430 kWh annually, depending on location, roof tilt, and shading. A ten-panel system (approx. 4.15 kWp) typically covers 70-80% of an average household's electricity consumption. The HPBC technology's improved low-light and diffuse-light performance provides an additional yield advantage during autumn and winter months.


## Datasheet

[Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/hi-mo-6-explorer-lr-5-54-hth-415-430-m-v03-dg-cd1618eade-9826739bbe09.pdf)


## Alternatives


| Panel | Power | How it differs |
| --- | --- | --- |
| [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +50 W, +2.5 pp, +5 yr warranty |
| [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +50 W, +2.5 pp, +5 yr warranty |
| [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +45 W, +2.3 pp, +5 yr warranty |
| [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | +50 W, +2.3 pp, +5 yr warranty |
| [Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-460w-class) | 460 W | +45 W, +2.3 pp, +5 yr warranty |
| [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | +45 W, +2.2 pp, +5 yr warranty |
| [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | +45 W, +2.2 pp, +5 yr warranty |
| [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | +45 W, +2.2 pp, +5 yr warranty |
| [Longi Solar LR5-54HIB-390M](https://comparepv.com/panel/longi-lr5-54hib-390m) | 390 W | -25 W, hotter, -1.3 pp |
| [Longi Solar LR5-54HIB-395M](https://comparepv.com/panel/longi-lr5-54hib-395m) | 395 W | -20 W, hotter, -1.1 pp |
| [Longi Solar LR5-54HPB-400M](https://comparepv.com/panel/longi-lr5-54hpb-400m) | 400 W | -15 W, hotter, -0.8 pp |
| [Longi Solar LR5-54HPH-405M](https://comparepv.com/panel/longi-lr5-54hph-405m) | 405 W | -10 W, hotter, -0.6 pp |
| [Longi Solar LR5-54HPH-410M](https://comparepv.com/panel/longi-lr5-54hph-410m) | 410 W | Hotter, -0.3 pp |
| [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +95 W, +3.7 pp, +5 yr warranty |
| [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +80 W, +3.5 pp, +5 yr warranty |
| [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +90 W, +3.4 pp, +5 yr warranty |


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Source: https://comparepv.com/panel/longi-lr5-54hth-415m

Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.