Strong in heat, no clear weak spot
The Longi Solar Hi-MO X10 Explorer LR7-72HVD 625-645M series is designed to maximize energy yield from every square meter of installation-especially where power density and predictable long-term performance are critical. A key feature is the application of back-contact (rear-side) cell architecture, which reduces the number of front-side shading elements, allowing the panel to better utilize light-particularly under low irradiance conditions and during morning and afternoon hours. The multi-cell construction supports more stable operation under partial shading, while refined module electronics and safety features enhance reliability in high-voltage installations. In practice, this translates to higher annual yield, improved performance under shading, and lower losses in real-world conditions. This solution is ideal for investors seeking to build PV farms, large commercial rooftops, or projects requiring low LCOE and stable energy production over years.
Ranking
Signals from the data
Utility-scale, commercial and shaded-installations.
Top 4% of the N-type 600-650 W segment, against a median of -0.290. Ranked 511th in the whole database.
Top 18% of the N-type 600-650 W segment, against a median of 227.7.
Top 19% of the N-type 600-650 W segment, against a median of 22.77%.
Moving the contacts to the rear of the cell eliminates visible grid lines and busbars from the front surface, increasing active area and improving yield in low-irradiance conditions and during morning/afternoon hours when the angle of incidence is unfavorable.
The series' efficiency exceeds Talesun TM7G78M and RedSolar M10R (22.72% each at the same 635 Wp power class) by about 0.8 percentage points, while sitting close to Sunpro Power TOPCon 210R (23.51%), confirming a top-tier position in the segment.
Thanks to the back contact architecture, the power temperature coefficient is -0.26%/°C, clearly better than the -0.30 to -0.35%/°C typical of standard TOPCon/PERC modules, translating into higher output in hot climates and on poorly ventilated roofs.
With 1% first-year degradation and 0.35% per year in years 2-30, guaranteed power reaches 88.85% of nameplate after 30 years - above the 87.4% floor that has become the market standard for premium tier-1 N-type modules as of 2026.
Longi Solar (founded 2000) is a market-leading PV manufacturer with full tier-1 bankable status, easing financing for large-scale projects - PV farms and commercial rooftops - by banks and infrastructure funds that require low credit-risk manufacturer references.
While the power warranty extends to 30 years, the product/workmanship warranty is only 15 years - below the emerging 25-year standard already offered by some tier-1 N-type competitors (e.g., Jinko Tiger Neo, JA Deep Blue, Canadian TOPHiKu6, Trina Vertex S+), limiting defect coverage in the second half of the module's service life.
Launched in 2024, the series relies on back contact technology with a shorter mass-production and field-data history compared to more mature TOPCon lines from peers (Sunpro Power, Talesun, RedSolar), which may matter for investors assessing long-term field degradation risk.
- Efficiency of 23.3% is 0.5pp above the N-type 600-650W median (22.8%)
- At 233.2 W/m² power density, this panel generates 5.5 W/m² more per unit area than N-type 600-650W median (227.7 W/m²)
- At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions
- Weight of 33.5 kg is typical for N-type 600-650W panels
- Bifacial design (70% factor) captures reflected light - adds 4-10% 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 630 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 1119 panels of the same or similar size to this one, within ±10 mm. See them here Found 1125 panels of the same or similar size to this one, within ±25 mm. See them here Found 1236 panels of the same or similar size to this one, within ±50 mm. See them here Found 1917 panels of the same or similar size to this one, within ±100 mm. See them here