Efficiency leader, no clear weak spot
The Renesola RS6-570~595NBG-E3 series are bifacial modules with double-glass, designed for stable operation in high-demand installations. Thanks to the N-type TOPCon technology, they better utilize diffuse light and maintain high production even under less favorable solar conditions, which effectively shortens the payback period in commercial and utility-scale projects. The use of MBB half-cut technology reduces losses at connections and improves resistance to micro-cracks, while also increasing tolerance to partial shading, which is common in roofs with many obstructions. The galium-doped wafer and precise, "non-destructive" cutting support long-term reliability. In practice, this series solves the problem of yield drops in hot and low-light conditions, offering a low temperature coefficient and predictable degradation over time. It is the choice for investors in industrial installations, warehouses, carports, PV farms, and existing system expansions, where power output per square meter and structural durability are key.
Ranking
Signals from the data
Commercial, utility-scale, shaded-installations and hot-climate.
Top 14% of the N-type 550-600 W segment, against a median of 22.45%.
Top 17% of the N-type 550-600 W segment, against a median of 224.5.
Efficiency of 22.07–23.03% places the series at the top of the bifacial segment, on par with Heliene 144HC M10 (23.02%) and Solarspace Lumina II (23.03%), and clearly ahead of Sunova TS-BW78 (21.3%).
The manufacturer guarantees 87.4% power retention after 30 years (89.4% after 25 years) — a longer, more demanding linear warranty than typical 25-year PERC terms, lowering effective LCOE in utility-scale projects.
Thanks to N-type cells, the Pmax temperature coefficient is -0.29%/°C, reducing output losses on hot days and improving annual yield versus older PERC modules (around -0.35%/°C).
The combination of multi-busbar half-cut cells and dual-glass bifacial design reduces interconnection losses, improves microcrack resistance, and increases partial-shading tolerance — valuable on roofs with multiple obstructions.
The Ga-doped N-type wafer limits LID/LeTID degradation and supports predictable long-term power decline, which matters for project bankability over the full system lifetime.
Despite appearing on BNEF's Tier 1 list in Q1 and Q2 2026 (5,000 MW/year capacity), ReneSola dropped off the ranking in Q3 2026 — BNEF's methodology excludes manufacturers flagged for solvency concerns, which may raise bankability risk for institutional project financing.
The standard product warranty is 15 years, while some N-type leaders (e.g., Jinko, LONGi, Trina) now offer 25-year product warranties matched to the performance warranty — a potential weak point for long-horizon investors.
- Efficiency of 22.8% matches the N-type 550-600W median
- 228.4 W/m² power density - 3.9 W/m² more than N-type 550-600W median (224.5 W/m²), more power per roof area
- Temperature coefficient of -0.29%/°C matches the N-type 550-600W median
- Weight of 31.7 kg is 2.2 kg above N-type 550-600W median (29.5 kg) - verify structural support
- Ranked #2617 out of 14005 panels for efficiency in the database
Specifications
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 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2547 panels of the same or similar size to this one, within ±100 mm. See them here