--- title: "Longi Solar LR7-54HGBB-445M 445W Solar Panel - Specs & Review | ComparePV" description: "Longi Solar LR7-54HGBB-445M 445W solar panel. Specs: 21.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/longi-lr7-54hgbb-445m" updated: 2026-09-11 --- # Longi Solar LR7-54HGBB-445M Strong in heat, no clear weak spot 321 panels in the segment N-type 400-450 W ## Identity - **Manufacturer:** Longi Solar - **Model:** LR7-54HGBB-445M - **Series:** Hi-MO 7 LR7-54HGBB 440~460M - **Rated power:** 445 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 400-450 W (321 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 445 W | 430 W | Strong - top 7% | | | Module efficiency | 21.80% | 21.91% | Typical | 7,022 | | Power density | 218.0 | 218.3 | Typical | 7,007 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 2% | 1,309 | | Weight (kg) | 23.6 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.80% | 21.91% | Typical | 7,022 | | Power density | 218.0 | 218.3 | Typical | 7,007 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 2% | 1,309 | | Weight per kWp | 53.0 | 51.2 | Typical | 6,792 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 2% of the N-type 400-450 W segment, against a median of -0.290. Ranked 1,309th in the whole database. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 445 W - **Efficiency:** 21.80 % - **Voltage at Pmax (Vmp):** 33.02 V - **Current at Pmax (Imp):** 13.48 A - **Open-circuit voltage (Voc):** 39.50 V - **Short-circuit current (Isc):** 14.30 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:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.6 kg - **Area:** 2.04 m2 - **Power density:** 218.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 389 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7022 of 14005 | | Power density | 7007 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 6792 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Glass-glass double-glass build** - The glass-glass construction improves resistance to moisture ingress and thermal cycling, reducing the risk of delamination and long-term power loss compared to typical glass-backsheet designs. - **N-type cells with low degradation** - N-type cell technology eliminates the LID effect common in older PERC cells and delivers more stable performance at high temperatures, translating into higher real-world annual yield, especially during peak summer months. - **~80% bifaciality boosts yield** - A bifaciality factor of roughly 80% lets the module capture light reflected off the ground - on bright roofs, ground-mount installations, and carports this can add a few extra percentage points of energy without adding more panels. - **30-year power warranty at 87.4%** - The manufacturer guarantees at least 87.4% of rated power after 30 years, alongside a 25-year product warranty - a longer linear power warranty term than the standard 25 years offered by many competitors in this segment. - **Tier-1 bankable manufacturer** - LONGi Solar is a Tier-1 (bankable) manufacturer operating since 2000, which simplifies project financing with banks and insurers and reduces long-term counterparty risk related to warranty guarantor solvency. ## Cons - **Series discontinued** - The Hi-MO 7 LR7-54HGBB 440-460M series has been discontinued (end of production in 2025), superseded by the newer Hi-MO 9 generation (up to 24.8-25.2% efficiency). This means limited spare parts availability and potentially longer turnaround for warranty claims. - **Efficiency below top-tier peers** - Maximum efficiency of 22.5% trails comparable Tier-1 modules at the same 460 Wp power class, such as Phono Solar Draco N-TOPCon (23.02%) and SunKean SKT440-460M12-96D4 (23.02%) - meaning slightly lower yield per unit of roof area. ## About this series The Longi Solar Hi-MO 7 LR7-54HGBB 440-460M series was designed for maximum energy production from the same roof or structure surface - with no compromises on durability. The key advantage here is the **double-glass construction (glass-glass)**, which improves resistance to moisture and temperature changes, while simultaneously stabilizing the module's performance over a long lifespan. This is a real benefit for investors looking to minimize the risk of yield losses and claims. The modules utilize **n-type cells**, resulting in lower degradation over time and better performance under demanding conditions. Additionally, this is a **bifacial** solution - the panel can use reflected light from the ground, so on light-colored roofs, ground-mounted installations, or carports, it can achieve higher yields without increasing the number of modules. The series is particularly suitable for single-family homes and businesses, where the **aesthetic appeal of the black design** and predictable energy production under various weather conditions matter. ## Notable figures - At 21.8% efficiency, this panel is on par with typical \*\*N-type 400-450W\*\* modules - At 218.0 W/m² power density, roof space requirements are typical for \*\*N-type 400-450W\*\* panels - Temperature coefficient of -0.28%/°C matches the \*\*N-type 400-450W\*\* median - Weight of 23.6 kg is 1.6 kg above \*\*N-type 400-450W\*\* median (22.0 kg) - verify structural support - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## Questions ### Is the Longi Solar Hi-MO 7 LR7-54HGBB 440–460M series still available for purchase? The Hi-MO 7 LR7-54HGBB 440–460M series has been discontinued by Longi Solar. New orders directly from the manufacturer are no longer fulfilled, and availability through distributors is limited to remaining stock. If you need the same N-type cell technology and glass-glass construction, ask your distributor about current Tier 1 alternatives from Longi or another manufacturer. ### What warranty does the Longi Hi-MO 7 LR7-54HGBB carry and what does it cover? Longi provides a 25-year product warranty covering materials and workmanship, plus a 30-year linear power output warranty guaranteeing at least 87.4% of rated power at year 30. First-year degradation is capped at 2%. This is one of the longest power warranty schedules available in the residential and commercial PV segment. ### What does bifacial technology mean in the Hi-MO 7 LR7-54HGBB and how much extra energy can I expect? Bifacial modules generate power from both the front and rear surfaces by capturing light reflected off the ground or rooftop surface. Under typical rooftop conditions, the bifacial gain ranges from 5% to 15% compared to a monofacial module. The highest gains come from installations over light-colored membranes, white gravel, or ground-mounted systems with adequate clearance below the module. ### How do the Longi Hi-MO 7 LR7-54HGBB panels perform in winter and at low temperatures? The N-type cells used in the Hi-MO 7 series have a low temperature coefficient of -0.28%/°C, meaning smaller power losses during hot summers and better performance on cold, sunny winter days compared to legacy PERC technology. Frost alone does not harm the modules, and the glass-glass construction improves moisture resistance and tolerance to thermal cycling — an important advantage in continental climates. ### What advantage does the glass-glass construction of the Hi-MO 7 offer over a standard backsheet module? Standard modules use a polymer backsheet that is susceptible to micro-cracks and moisture ingress over time. The glass-glass design replaces the backsheet with a second glass layer, eliminating those failure points and significantly reducing the risk of moisture-induced degradation (PID) and rear-side hail damage. The result is more stable power output throughout the entire 30-year power warranty period. ### Are the Longi Hi-MO 7 LR7-54HGBB 460W panels suitable for a pitched residential roof? Yes, the 1800×1134×30 mm footprint and approximately 23.6 kg weight are within the range handled by standard rooftop mounting systems. A 460 Wp rating lets you maximize energy yield from limited roof area. Note that glass-glass modules are slightly heavier than backsheet equivalents, so a certified installer should assess whether the roof structure and racking can support the load before proceeding. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/hi-mo-7-lr-7-54-hgbb-440-460-m-v2-30-30-and-15frame-only-for-890e2f127ab1.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +50 W, lighter, +3.0 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +45 W, lighter, +2.7 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +45 W, lighter, +2.7 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +40 W, lighter, +2.5 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +40 W, lighter, +2.5 pp | | [Longi Solar LR7-54HJD-495M](https://comparepv.com/panel/longi-lr7-54hjd-495m) | 495 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +40 W, lighter, +2.5 pp | | [Longi Solar LR7-54HGBB-440M](https://comparepv.com/panel/longi-lr7-54hgbb-440m) | 440 W | Very close match | | [Longi Solar LR7-54HGBB-450M](https://comparepv.com/panel/longi-lr7-54hgbb-450m) | 450 W | Very close match | | [Longi Solar LR7-54HTH-455M](https://comparepv.com/panel/longi-lr7-54hth-455m) | 455 W | Lighter, +0.5 pp, -5 yr warranty | | [Longi Solar LR7-54HTH-460M](https://comparepv.com/panel/longi-lr7-54hth-460m) | 460 W | Lighter, +0.7 pp, -5 yr warranty | | [Longi Solar LR7-54HTH-465M](https://comparepv.com/panel/longi-lr7-54hth-465m) | 465 W | +20 W, +1.0 pp, -5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +65 W, cooler, +3.2 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +60 W, cooler, +2.9 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +55 W, cooler, +2.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +55 W, lighter, +2.7 pp | --- Source: https://comparepv.com/panel/longi-lr7-54hgbb-445m Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.