Strong in heat, no clear weak spot
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.
Ranking
Signals from the data
Residential and commercial.
Top 2% of the N-type 400-450 W segment, against a median of -0.290. Ranked 1,309th in the whole database.
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 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.
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.
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.
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.
The Hi-MO 7 LR7-54HGBB 440-460M series has been discontinued (end of production in 2025), superseded by the newer Hi-MO 9 generation (up to 24.8-25.2% efficiency).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.
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.
- Efficiency of 21.6% matches the N-type 400-450W median
- Power density of 215.6 W/m² matches the N-type 400-450W median
- At -0.28%/°C, hot weather performance is typical for N-type 400-450W panels
- At 23.6 kg (1.6 kg above N-type 400-450W median of 22.0 kg), requires checking roof load capacity
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
Specifications
Datasheet charts
Measured curves published by Longi Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 440 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Found 197 panels of the same or similar size to this one, within ±10 mm. See them here Found 201 panels of the same or similar size to this one, within ±25 mm. See them here Found 1712 panels of the same or similar size to this one, within ±50 mm. See them here Found 4014 panels of the same or similar size to this one, within ±100 mm. See them here