--- title: "Renesola RS6-590NBG-E3 590W Solar Panel - Specs & Review | ComparePV" description: "Renesola RS6-590NBG-E3 590W solar panel. Specs: 22.84% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/renesola-rs6-590nbg-e3" updated: 2026-09-11 --- # Renesola RS6-590NBG-E3 Efficiency leader, no clear weak spot 260 panels in the segment N-type 550-600 W ## Identity - **Manufacturer:** Renesola - **Model:** RS6-590NBG-E3 - **Series:** RS6-570~595NBG-E3 - **Rated power:** 590 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 550-600 W (260 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 590 W | 580 W | Strong - top 15% | | | Module efficiency | 22.84% | 22.45% | Strong - top 14% | 2,617 | | Power density | 228.4 | 224.5 | Strong - top 17% | 2,598 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 31.7 kg | 29.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.84% | 22.45% | Strong - top 14% | 2,617 | | Power density | 228.4 | 224.5 | Strong - top 17% | 2,598 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 53.7 | 52.3 | Typical | 7,767 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **22.84% module efficiency** - Top 14% of the N-type 550-600 W segment, against a median of 22.45%. - **228.4 watts per square metre** - Top 17% of the N-type 550-600 W segment, against a median of 224.5. - **Best for:** Commercial, utility-scale, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 590 W - **Efficiency:** 22.84 % - **Voltage at Pmax (Vmp):** 44.16 V - **Current at Pmax (Imp):** 13.36 A - **Open-circuit voltage (Voc):** 53.41 V - **Short-circuit current (Isc):** 14.07 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.7 kg - **Area:** 2.58 m2 - **Power density:** 228.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 516 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2617 of 14005 | | Power density | 2598 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 7767 of 14005 | | Warranty | 21 of 14005 | ## Pros - **High N-type TOPCon efficiency** - 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%). - **30-year, 87.4% power warranty** - 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. - **Low -0.29%/°C temperature coefficient** - 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). - **MBB half-cut, dual-glass construction** - 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. - **Gallium-doped wafer** - 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. ## Cons - **Lost BNEF Tier 1 status in Q3 2026** - 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. - **15-year product warranty trails premium tier** - 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. ## About this series 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. ## Notable figures - 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 ## Questions ### What warranty comes with the Renesola RS6-570~595NBG-E3 panels? The RS6-570~595NBG-E3 series carries a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. As a NYSE-listed Tier 1 manufacturer, Renesola provides bankable warranty coverage. After 30 years, output is guaranteed to remain at or above 87.4% of nominal power, enabling reliable yield projections for commercial and utility-scale projects. ### What advantage does N-type TOPCon technology give the RS6-570~595NBG-E3 over PERC modules? N-type TOPCon cells deliver higher conversion efficiency and significantly lower light-induced degradation (LID) than PERC. The gallium-doped wafer eliminates LeTID, while tunnel oxide passivation improves carrier collection. In real-world terms, this means higher annual energy yield and more predictable output over the full 30-year power warranty period, directly lowering the LCOE of commercial and utility installations. ### How do the RS6-570~595NBG-E3 panels perform in high heat and low-light conditions? The NBG-E3 series outperforms standard PERC modules in both scenarios. The low temperature coefficient (typically around -0.30%/°C for N-type TOPCon) reduces summer heat losses. The bifacial glass-glass design captures reflected albedo light from the ground or rooftop membrane, boosting energy harvest during overcast conditions and in the morning and evening hours — critical for projects where diffuse irradiance is common. ### What types of installations are the Renesola RS6-570~595NBG-E3 modules best suited for? With up to 595 Wp and a 182 mm MBB half-cut cell format, these modules are designed for ground-mount systems, utility-scale PV farms, flat industrial rooftops, warehouses, and carport structures. The bifacial glass-glass build performs best where albedo from light-colored ground or white TPO membrane is available. For residential pitched-roof installations, lighter monofacial modules from the same product family are usually a better fit. ### What is the difference between the RS6-570~595NBG-E3 and the monofacial RS6-570~595N-E3? The NBG designation indicates a bifacial glass-glass (Bifacial Glass-Glass) construction, while the N-E3 variant is a monofacial module with a front glass and a rear backsheet. The NBG-E3 modules are heavier and carry a higher upfront cost, but generate additional energy from the rear side — typically a 10–25% bifacial gain depending on ground albedo — and offer superior fire resistance and longer encapsulant durability. ### Are the Renesola RS6-570~595NBG-E3 panels compatible with popular inverters? Yes. The open-circuit voltage (Voc) of this series falls within the input range accepted by inverters from SMA, Fronius, Huawei, Solis, and SolarEdge. Before finalizing the design, verify the inverter's maximum MPPT input voltage and string sizing against the datasheet, as the high per-module power of 595 Wp requires careful string configuration — especially in systems using power optimizers or module-level power electronics. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/rs6-570-595nbg-e3-2278-1134-30-6905f7ea4df1.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | -30 W, lighter, +2.0 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +50 W, lighter, +2.0 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | -35 W, lighter, +1.8 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +45 W, lighter, +1.8 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +40 W, cooler, +1.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | -40 W, 15 kg lighter, +1.6 pp | | [Renesola RS6-550M-E3](https://comparepv.com/panel/renesola-rs6-550m-e3) | 550 W | Hotter, -1.6 pp, -5 yr warranty | | [Renesola RS6-555M-E3](https://comparepv.com/panel/renesola-rs6-555m-e3) | 555 W | Hotter, -1.4 pp, -5 yr warranty | | [Renesola RS6-560M-E3](https://comparepv.com/panel/renesola-rs6-560m-e3) | 560 W | Hotter, -1.2 pp, -5 yr warranty | | [Renesola RS6-570N-E3](https://comparepv.com/panel/renesola-rs6-570n-e3) | 570 W | -20 W, lighter, -0.8 pp | | [Renesola RS6-575N-E3](https://comparepv.com/panel/renesola-rs6-575n-e3) | 575 W | -15 W, lighter, -0.6 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +60 W, lighter, +2.4 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +55 W, lighter, +2.2 pp | --- Source: https://comparepv.com/panel/renesola-rs6-590nbg-e3 Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.