--- title: "Longi Solar LR7-54HTHF-475M Solar Panel: Specs & Datasheet | ComparePV" description: "Longi Solar LR7-54HTHF-475M solar panel. Specs: 23.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/longi-lr7-54hthf-475m" image: "https://comparepv.com/og/panel/longi-lr7-54hthf-475m.png" updated: 2026-09-11 --- # Longi Solar LR7-54HTHF-475M Light for its output, short guarantee 302 panels in the segment N-type 450-500 W ## Identity - **Manufacturer:** Longi Solar - **Model:** LR7-54HTHF-475M - **Series:** Hi-MO X6 Guardian (Anti-Dust) LR7-54HTHF 455~475M - **Rated power:** 475 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 450-500 W (302 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 475 W | 470 W | Typical | | | Module efficiency | 23.30% | 22.52% | Strong - top 15% | 1,057 | | Power density | 232.7 | 225.3 | Strong - top 20% | 1,231 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 21% | 1,347 | | Weight (kg) | 21.6 kg | 23.7 kg | Strong - top 14% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.30% | 22.52% | Strong - top 15% | 1,057 | | Power density | 232.7 | 225.3 | Strong - top 20% | 1,231 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 21% | 1,347 | | Weight per kWp | 45.5 | 49.7 | Strong - top 14% | 743 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 7% | 9,912 | ### Strengths - **45.5 kg per kWp** - Top 14% of the N-type 450-500 W segment, against a median of 49.7. - **23.30% module efficiency** - Top 15% of the N-type 450-500 W segment, against a median of 22.52%. - **232.7 watts per square metre** - Top 20% of the N-type 450-500 W segment, against a median of 225.3. ### Watch out for - **25 year performance warranty** - Bottom 7% of the N-type 450-500 W segment, against a median of 30 yrs. Ranked 9,912th in the whole database. - **Best for:** Residential, commercial, hot-climate and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 475 W - **Efficiency:** 23.30 % - **Voltage at Pmax (Vmp):** 33.79 V - **Current at Pmax (Imp):** 14.06 A - **Open-circuit voltage (Voc):** 39.95 V - **Short-circuit current (Isc):** 15.07 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.280 %/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 technology:** N-type - **Cell count:** 108 ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.6 kg - **Area:** 2.04 m2 - **Power density:** 232.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 89.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 415 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1057 of 14129 | | Power density | 1231 of 14129 | | Temperature coefficient | 1347 of 14129 | | Weight | 743 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Patented Anti-Dust frame** - A shortened frame edge lets dust and soiling slide off under gravity and rainfall, reducing bottom-edge shading and lowering the need for cleaning. This is a real advantage in dusty locations - roadside sites, agricultural land, or industrial zones. - **Back contact (HPBC) cell architecture** - The HPBC (Hybrid Passivated Back Contact) technology eliminates visible busbars on the front side, giving a uniform, aesthetic look favored on residential rooftops, while also reducing front-side optical losses typical of conventional PERC cells. - **Low temperature coefficient of -0.28%/°C** - At -0.28%/°C, this is clearly better than the -0.35 to -0.40%/°C typical of older PERC modules, translating into smaller power losses on hot days and higher real-world annual yield during summer conditions. - **Bankable Tier-1 manufacturer** - Longi Solar has operated since 2000 and is classified as a Tier-1, BNEF-bankable manufacturer, which eases project financing and provides confidence in long-term warranty support. The series launched in 2024, representing the current generation of N-type technology. - **N-type technology - lower degradation** - N-type cells exhibit near-zero LID (Light Induced Degradation) compared to older P-type PERC cells, resulting in more stable energy production during the first years of operation. ## Cons - **Efficiency trails top peers** - Peak efficiency of 23.3% is about 0.5 pp lower than direct competitors in the same 475W power class - JA Solar JAM54D40 LB and Astronergy ASTRO N7s 2.0 both offer 23.8%. For the same roof area, this means a slightly lower potential yield. - **Shorter warranty than Longi's flagship series** - The 15-year product warranty and 25-year power warranty are noticeably shorter than the standard offered by other, newer Longi Hi-MO X6 series (e.g. X6 Max, X6 Artist), which provide 25 years of product warranty and 30 years of power warranty. For buyers prioritizing the longest protection periods, this may be a limiting factor. ## About this series The Longi Solar Hi-MO X6 Guardian (Anti-Dust) LR7-54HTHF 455~475M was designed with one of the most common problems in PV installations in mind - yield losses caused by dust, dirt, and grime accumulating at the bottom edge of the modules. The key innovation is the **Anti-Dust frame construction**, which employs a design that slopes one of the edges, allowing dirt to slide off more easily due to gravity and rain. In practice, this results in **less shading from dirt**, more stable performance, and less frequent cleaning, lowering operational costs. This series utilizes a **highly efficient back-contact cell architecture**, valued for its superior light utilization and aesthetically pleasing, uniform appearance from the front side - particularly desired on residential rooftops. Furthermore, the module emphasizes **enhanced structural reliability** thanks to its patented frame and refined sealing, aiding performance in windy conditions, heavy rain, and temperature cycles. This solution is for investors looking to maximize energy production in dusty environments (such as roadsides, fields, industrial zones) - both for residential and commercial installations. ## Notable figures - 23.3% module efficiency - 0.8pp better than the \*\*N-type 450-500W\*\* median of 22.5% - Power density of 232.7 W/m² packs 7.4 W/m² more into the same footprint vs \*\*N-type 450-500W\*\* median (225.3 W/m²) - Temperature coefficient of -0.28%/°C matches the \*\*N-type 450-500W\*\* median - 21.6 kg weight - 2.1 kg lighter than \*\*N-type 450-500W\*\* median (23.7 kg), reducing installation effort - #1057 for efficiency, #1347 for temperature performance out of 14129 panels ## Questions ### How does the Anti-Dust frame on the LONGi Hi-MO X6 Guardian LR7-54HTHF differ from a standard aluminum frame? The Anti-Dust frame features a shortened lower edge aligned flush with the glass surface, eliminating the conventional frame ledge where dirt and mud accumulate. On a standard module that ledge creates a shadow that reduces output from the bottom cell row. Dust and mud instead slide off under gravity and rainfall. LONGi validated the design with over 500 days of field testing and 120+ patents covering the Guardian frame architecture. ### What warranty does the LONGi Hi-MO X6 Guardian LR7-54HTHF 475W come with? LONGi provides a 15-year product warranty covering material and workmanship defects, plus a 25-year linear power output warranty guaranteeing at least 87.4% of nominal power after 25 years. LONGi is a Tier 1 manufacturer with strong financial backing, which matters when filing warranty claims over a multi-decade system lifetime. ### What is HPBC cell technology used in the Hi-MO X6 Guardian series and is it worth the premium? HPBC (Hybrid Passivated Back Contact) is LONGi's proprietary N-type back contact architecture that moves all metal electrodes to the rear of the cell, leaving the front surface free for maximum light absorption. This pushes module efficiency up to 23.3% and delivers a clean, uniform aesthetic preferred in residential rooftop installations. The higher efficiency also means more power output per square meter of available roof space. ### Are the LONGi Hi-MO X6 Guardian 455-475M panels suitable for dusty sites such as roadsides or agricultural land? Yes - the Hi-MO X6 Guardian Anti-Dust series was specifically engineered for high-soiling environments. The shortened frame edge removes the dust trap present on conventional frames, allowing rainfall to self-clean the module without service intervention. This is particularly valuable on roadside solar farms, industrial zones, and farmland where soiling losses can reduce annual yield by several percent compared to standard modules. ### What is the actual peak power of the LONGi Hi-MO X6 Guardian LR7-54HTHF and how should I read the 455-475M designation? 475 Wp is the peak power measured under Standard Test Conditions (STC: 1000 W/m² irradiance, 25 °C cell temperature, AM 1.5 spectrum). The 455-475M designation indicates binned output classes; each shipped module includes a flash test report confirming its measured wattage. For system sizing, using the lower bound of the range is the conservative approach. ### Is the LONGi Hi-MO X6 Guardian LR7-54HTHF a bifacial module and can it be used with single-axis trackers? No, the LR7-54HTHF Anti-Dust variant is a monofacial module - it does not feature bifacial cell technology. It is compatible with fixed-tilt roof and ground-mount structures as well as single-axis trackers, but no additional rear-side energy gain from ground albedo is available. If bifacial performance is a priority, consider other LONGi series with a B suffix in the model designation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/lr-7-54-hthf-455-475-m-anti-dust-frame-20240529-v2-1ee716435-6629dd4032e0.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +1.7 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, +1.5 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +1.4 pp, +5 yr warranty | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Heavier, +1.4 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, +1.2 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +1.2 pp, +5 yr warranty | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +25 W, +1.2 pp, +5 yr warranty | | [Longi Solar LR7-54HGBB-440M](https://comparepv.com/panel/longi-lr7-54hgbb-440m) | 440 W | -35 W, -1.7 pp, +5 yr warranty | | [Longi Solar LR7-54HGBB-445M](https://comparepv.com/panel/longi-lr7-54hgbb-445m) | 445 W | -30 W, -1.5 pp, +5 yr warranty | | [Longi Solar LR7-54HGBB-450M](https://comparepv.com/panel/longi-lr7-54hgbb-450m) | 450 W | -25 W, -1.3 pp, +5 yr warranty | | [Longi Solar LR7-54HTH-455M](https://comparepv.com/panel/longi-lr7-54hth-455m) | 455 W | -20 W, -1.0 pp | | [Longi Solar LR7-54HTH-460M](https://comparepv.com/panel/longi-lr7-54hth-460m) | 460 W | -15 W, -0.8 pp | | [Longi Solar LR7-54HTH-465M](https://comparepv.com/panel/longi-lr7-54hth-465m) | 465 W | -10 W, -0.5 pp | --- Source: https://comparepv.com/panel/longi-lr7-54hthf-475m Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.