--- title: "Longi Solar LR7-54HVB-480M 480W Solar Panel - Specs & Review | ComparePV" description: "Longi Solar LR7-54HVB-480M 480W solar panel: 2 shop offers from 106 €. Specs: 23.50% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/longi-lr7-54hvb-480m" updated: 2026-10-04 --- # Longi Solar LR7-54HVB-480M Strong in heat, no clear weak spot 301 panels in the segment N-type 450-500 W ## Identity - **Manufacturer:** Longi Solar - **Model:** LR7-54HVB-480M - **Series:** X10 Single Glass Premium Black (LR7-54HVB) - **Rated power:** 480 W - **Cell technology:** N-type ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [www.photovoltaik-shop.com](https://comparepv.com/go/15653) | Germany | 106 € incl. VAT | 220.83 €/kWp | In stock | Last read 5 Oct 01:00 | | [AZ Solar Shop](https://comparepv.com/go/538688) | Italy | | | Not stated | Last read 4 Oct 15:05 | ## How it compares Compared against segment N-type 450-500 W (301 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 480 W | 470 W | Typical | | | Module efficiency | 23.50% | 22.52% | Strong - top 11% | 716 | | Power density | 235.2 | 225.2 | Strong - top 12% | 718 | | Temperature coefficient | -0.260 | -0.290 | Strong - top 6% | 511 | | Weight (kg) | 21.6 kg | 23.7 kg | Strong - top 10% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.50% | 22.52% | Strong - top 11% | 716 | | Power density | 235.2 | 225.2 | Strong - top 12% | 718 | | Temperature coefficient | -0.260 | -0.290 | Strong - top 6% | 511 | | Weight per kWp | 45.0 | 49.5 | Strong - top 10% | 598 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.260 %/°C temperature coefficient** - Top 6% of the N-type 450-500 W segment, against a median of -0.290. Ranked 511th in the whole database. - **45.0 kg per kWp** - Top 10% of the N-type 450-500 W segment, against a median of 49.5. - **23.50% module efficiency** - Top 11% of the N-type 450-500 W segment, against a median of 22.52%. - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 480 W - **Efficiency:** 23.50 % - **Voltage at Pmax (Vmp):** 33.28 V - **Current at Pmax (Imp):** 14.43 A - **Open-circuit voltage (Voc):** 40.29 V - **Short-circuit current (Isc):** 15.13 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.200 %/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:** 235.2 Wp/m2 ### Warranty and degradation - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 88.8 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.35 % - **Output after 30 years:** 426 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 716 of 14005 | | Power density | 718 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 598 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Class-leading efficiency in the segment** - Efficiency of 23.3-24.3% clearly outperforms comparable peer series: Solarspace SS8-60HD (22.87%), Hanersun Hitouch 5N (23%), and Resun RS8K-M-FB (22.94%) - all at the same maximum power of 495 Wp. This means less module area is needed to reach the same power output, which matters on constrained roof space. - **HPBC 2.0 - real shading resilience** - Per LONGi testing (TÜV Rheinland certified) with 50% single-cell shading, Hi-MO X10 modules show an average power loss of just 10.15%, versus 36.48% for comparable TOPCon modules. The back-contact design eliminates visible busbars on the front, further reducing hotspot risk near chimneys, dormers, or shade lines. - **30-year linear power warranty** - The manufacturer guarantees approximately 99% of nominal power in year one and ~87% after 30 years, versus the 25-year linear warranty that is the market standard among tier-1 peers. This extra 5 years of coverage directly boosts the installation's residual value. - **Tier-1, bankable manufacturer with a 25-year track record** - LONGi Solar has operated since 2000 and is listed as Tier-1 (bankable), which eases project financing through banks and leasing providers and reduces the risk of warranty service continuity compared to less established brands among the peer comparables. - **Premium Black aesthetics with no visible busbars** - The uniform, deep-black look without visible conductive traces (characteristic of HPBC) is a practical aesthetic advantage for residential prosumers, for whom the visible appearance of the rooftop array is a meaningful selection criterion alongside technical specs. ## Cons - **Monofacial-only variant** - The series is not offered in a bifacial configuration (is\_bifacial: false), unlike the growing segment of bifacial modules used in ground-mount, carport, or flat-roof installations with suitable albedo. This limits the series mainly to standard pitched-roof applications, without the additional rear-side energy gain. ## About this series The Longi Solar X10 Single Glass Premium Black (LR7-54HVB) series was designed for maximum energy production on limited rooftop surfaces, without compromising on aesthetics. The use of n-type cells and **HPBC** (back contact) technology minimizes losses due to shading and uneven sunlight exposure, while also improving module performance in low-light conditions. This is a practical advantage in the Polish context - near chimneys, window frames, or trees, where traditional panels often lose yield. The **single glass** variant facilitates installation in typical rooftop setups while maintaining high resistance to loads and weather factors. Visually, it stands out with its uniform, deep black finish - **Premium Black** is an excellent choice for investors seeking a discreet and cohesive installation that complements modern roofing. The LR7-54HVB series is suitable for single-family homes and small commercial properties, where **high power density**, stability, and long-term profitability, thanks to the extended linear power warranty, are essential. ## Notable figures - Efficiency of 23.5% is 1.0pp above the \*\*N-type 450-500W\*\* median (22.5%) - 235.2 W/m² power density - 10.0 W/m² more than \*\*N-type 450-500W\*\* median (225.2 W/m²), more power per roof area - -0.26%/°C temperature coefficient (median: -0.29%/°C) - retains ~1% more power at high temperatures - 21.6 kg weight - 2.1 kg lighter than \*\*N-type 450-500W\*\* median (23.7 kg), reducing installation effort - In the top 5% for efficiency among all N-type panels ## Questions ### What is HPBC 2.0 technology in the LONGi LR7-54HVB panels and does it actually improve performance? HPBC 2.0 (Hybrid Passivated Back Contact) places all contact electrodes exclusively on the rear side of the cell, completely eliminating metal busbars from the light-absorbing surface. This allows more irradiance to reach the cell while reducing busbar shading losses and carrier recombination. In practice, this translates to module efficiency up to 24.3% and better low-light performance — a tangible advantage in climates like Poland's, where overcast conditions are frequent. ### Does the LONGi X10 Premium Black LR7-54HVB perform well under partial shading from chimneys, dormers, or nearby trees? Yes, the HPBC 2.0 back-contact structure combined with n-type cells significantly reduces the impact of partial shading. Back-contact cells handle uneven irradiance better than conventional PERC modules since the absence of front busbars eliminates cross-shading on the cell. Energy losses near chimneys or dormers can be noticeably lower than with standard modules. For severe shading scenarios, adding power optimizers is still advisable. ### What warranty does the LONGi LR7-54HVB come with and what exactly does it cover? LONGi Solar provides a 25-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. The performance warranty allows a maximum 1% degradation in year one, then no more than 0.35% per year — guaranteeing at least 88.9% of rated power after 30 years. This is one of the most favorable linear warranties currently available among residential-grade PV modules. ### What efficiency do the LONGi LR7-54HVB panels achieve and how much roof space do I need for a 10 kWp system? The LR7-54HVB series reaches up to 24.3% module efficiency, placing it among the top commercially available monocrystalline panels. The 495 Wp variant measures 1800 × 1134 mm, so a 10 kWp system requires roughly 20–21 modules, occupying approximately 41–43 m² of roof area — compared to 25–27 older 380–400 Wp panels. That represents a meaningful roof-space saving of up to 15%. ### Are the all-black LONGi X10 LR7-54HVB panels suitable for a standard pitched roof and how do they look once installed? Yes, the X10 Premium Black series is designed for pitched-roof installations. The module measures 1800 × 1134 × 30 mm and weighs 21.6 kg, making it straightforward to handle on standard aluminum racking. The single glass variant is lighter than dual glass and requires no special mounting hardware. The uniform deep-black cells, frame, and backsheet blend seamlessly with dark ceramic tiles or standing-seam metal roofing. ### Is the LONGi LR7-54HVB a bifacial panel — does it harvest energy from both sides? No, the LR7-54HVB is a monofacial module in a single glass configuration — it does not harvest reflected irradiance from the ground. On typical pitched rooftops where the rear of the panel faces battens and roofing material, a bifacial module provides no real energy gain. The single glass monofacial design is lighter, easier to install, and fully adequate for the vast majority of residential rooftop PV systems. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/lr-7-54-hvb-475-495-m-30-30-and-15-frame-bgv-02-20250820-en-7962774d9872.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +30 W, cooler, +1.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +15 W, +1.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +25 W, cooler, +1.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +10 W, +1.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +20 W, cooler, +1.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +20 W, +1.0 pp | | [Longi Solar LR7-54HGBB-440M](https://comparepv.com/panel/longi-lr7-54hgbb-440m) | 440 W | -40 W, hotter, -1.9 pp | | [Longi Solar LR7-54HGBB-445M](https://comparepv.com/panel/longi-lr7-54hgbb-445m) | 445 W | -35 W, hotter, -1.7 pp | | [Longi Solar LR7-54HGBB-450M](https://comparepv.com/panel/longi-lr7-54hgbb-450m) | 450 W | -30 W, hotter, -1.5 pp | | [Longi Solar LR7-54HTH-455M](https://comparepv.com/panel/longi-lr7-54hth-455m) | 455 W | -25 W, -1.2 pp, -5 yr warranty | | [Longi Solar LR7-54HTH-460M](https://comparepv.com/panel/longi-lr7-54hth-460m) | 460 W | Hotter, -1.0 pp, -5 yr warranty | | [Longi Solar LR7-54HTH-465M](https://comparepv.com/panel/longi-lr7-54hth-465m) | 465 W | Hotter, -0.7 pp, -5 yr warranty | --- Source: https://comparepv.com/panel/longi-lr7-54hvb-480m 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.