Strong in heat, heavy for its output
The Longi Solar Hi-MO 7 LR7-72HGD 595-625M series is designed to maximize energy yield where every square meter and every operating hour count. Its key feature is the bifacial structure in a dual-glass system, which genuinely increases production by capturing reflected light from the substrate-particularly on light-colored roofs, membranes, and ground-mounted installations with properly prepared terrain. The application of modern monocrystalline cells in a half-cell architecture translates to better performance under partial shading and lower internal losses, enabling more stable energy production in less-than-ideal conditions. This series also boasts high resistance to demanding environments-the double glass supports durability and minimizes the risk of micro-cracks over the long term. Another advantage is excellent performance at high temperatures, reducing power losses during summer months. This series is primarily intended for PV farms, commercial and industrial installations, and developers seeking to reduce Balance of System (BOS) costs through higher power output per module.
Ranking
Signals from the data
Utility-scale, commercial, shaded-installations, hot-climate and cold-climate.
Weight-limited structures, tight roof space and roofs where every square metre has to count.
Top 14% of the N-type 600-650 W segment, against a median of -0.290.
Bottom 12% of the N-type 600-650 W segment, against a median of 52.7.
Bottom 16% of the N-type 600-650 W segment, against a median of 22.77%.
Bottom 17% of the N-type 600-650 W segment, against a median of 227.7.
The dual-glass bifacial construction achieves a bifaciality factor of 80±5%, which per manufacturer data enables up to 3% higher energy yield versus typical mainstream bifacial modules. Actual gain depends on ground albedo, but the effect is measurable on light-colored roofs, membranes, and ground-mount installations.
Combining N-type cells with a half-cut architecture lowers resistive losses and improves module behavior under partial shading compared to older full-cell PERC designs, resulting in more stable energy output under less-than-ideal conditions.
The power temperature coefficient is -0.28%/°C, notably better than the typical -0.35 to -0.40%/°C for PERC modules. This means smaller power losses in summer heat, with cells rated to operate up to +85°C - relevant for dark roofs or hot climates.
Maximum efficiency of 23.1% places the series close to the best peer comparables in the segment (DAH Solar DHN-66Z16/DG and DHN-72R20/DG at 23.14%, Leapton LP182*182 at 22.36% for the same 625 Wp rating), confirming its technological competitiveness among other 625 Wp module makers.
LONGi is listed as a BloombergNEF Tier 1 manufacturer (including Q2 2026) and has maintained an AAA bankability rating in the PV Tech ModuleTech report for 25 consecutive quarters, easing project financing for utility-scale PV farms and commercial installations using this series.
The standard product warranty is 12 years, while some Tier-1 competitors (e.g., Trina Solar under its TrinaProtect program) now offer a 25-year product warranty bundled with a 25-year power warranty. The 30-year linear power warranty partially offsets this gap, but the shorter materials/workmanship coverage period can matter when comparing bids for large commercial projects.
- Efficiency of 22.2% is 0.6pp below the N-type 600-650W median (22.8%)
- Power density of 222.1 W/m² is 5.6 W/m² below N-type 600-650W median (227.7 W/m²) - needs more roof space
- Temperature coefficient of -0.28%/°C matches the N-type 600-650W median
- At 33.5 kg, weight matches the N-type 600-650W median
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
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 600 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.
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