--- title: "Renesola RS4-490NBG-E1 Solar Panel: Specs & Datasheet | ComparePV" description: "Renesola RS4-490NBG-E1 solar panel. Specs: 22.71% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/renesola-rs4-490nbg-e1" image: "https://comparepv.com/og/panel/renesola-rs4-490nbg-e1.png" updated: 2026-09-11 --- # Renesola RS4-490NBG-E1 Middle of its segment, heavy for its output 302 panels in the segment N-type 450-500 W ## Identity - **Manufacturer:** Renesola - **Model:** RS4-490NBG-E1 - **Series:** RS4-480~500NBG-E1 - **Rated power:** 490 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 450-500 W (302 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 490 W | 470 W | Strong - top 13% | | | Module efficiency | 22.71% | 22.52% | Typical | 3,342 | | Power density | 227.1 | 225.3 | Typical | 3,396 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight (kg) | 28.0 kg | 23.7 kg | Weak - bottom 6% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.71% | 22.52% | Typical | 3,342 | | Power density | 227.1 | 225.3 | Typical | 3,396 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight per kWp | 57.1 | 49.7 | Weak - bottom 6% | 11,169 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **57.1 kg per kWp** - Bottom 6% of the N-type 450-500 W segment, against a median of 49.7. Ranked 11,169th in the whole database. - **Best for:** Commercial and shaded-installations. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 22.71 % - **Voltage at Pmax (Vmp):** 36.81 V - **Current at Pmax (Imp):** 13.31 A - **Open-circuit voltage (Voc):** 44.78 V - **Short-circuit current (Isc):** 13.85 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:** 120 - **Bifacial:** yes ### Physical - **Length:** 1903 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 28.0 kg - **Area:** 2.16 m2 - **Power density:** 227.1 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:** 428 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3342 of 14129 | | Power density | 3396 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 11169 of 14129 | | Warranty | 21 of 14129 | ## Pros - **N-type TOPCon + bifacial dual glass** - The combination of N-type TOPCon cells with a bifacial dual-glass design delivers lower LID/LeTID degradation and additional albedo-driven yield, resulting in higher annual energy production than classic monofacial PERC modules. - **Efficiency up to 23.17% - above some peers** - The upper efficiency range of 23.17% clearly exceeds Silfab SIL HM (21%) and Selfa SV120M.2.4 (22.6%), meaning higher power density per m² and a smaller required installation area for the same nominal power. - **30-year linear power warranty** - The 30-year power warranty matches the premium standard now offered by leading tier-1 manufacturers, providing predictable yield forecasts for long-term PV project financing models. - **MBB half-cut cell technology** - Multi-busbar half-cut cells reduce resistive losses and lower the risk of power loss from partial shading or microcracks, improving operational stability in field conditions. - **Bankable tier-1 manufacturer since 2005** - Renesola has operated since 2005 and holds tier-1 bankable status, easing project financing for commercial installations and solar farms; the series, launched in 2023, remains in active production (not discontinued). ## Cons - **Product warranty limited to 15 years** - The 15-year product warranty is shorter than the standard now offered by some tier-1 manufacturers (Jinko, Trina, LONGi), which have extended it to 25 years - a relatively weaker part of the warranty package compared to the same 30-year power warranty. - **Efficiency below segment leader** - The maximum efficiency of 23.17% is lower than Gokin's GK-3-54HGF (24.5% at the same 500 Wp power class), meaning the Renesola module requires slightly more roof or ground area for comparable power output. ## About this series The Renesola RS4-480~500NBG-E1 series consists of bifacial N-type modules using TOPCon technology, designed for high productivity in real-world conditions, even when the installation does not have ideal sunlight. The use of a **bifacial design with double glass** allows for better utilization of reflected light from the ground, resulting in higher energy yields compared to traditional monofacial modules, especially on bright roofs and in ground-mounted installations. The **MBB half-cut technology** and precise cell cutting also contribute to stable operation and reduced losses within the module. In practice, this series helps to address the issue of reduced production under low sunlight conditions, thanks to its **good performance in low-light conditions** and favorable temperature characteristics. It is a good choice for commercial installations, PV farms, and modern rooftop projects where **long-term reliability** and predictable energy yields are important. ## Notable figures - Efficiency of 22.7% matches the \*\*N-type 450-500W\*\* median - Power density of 227.1 W/m² matches the \*\*N-type 450-500W\*\* median - At -0.29%/°C, hot weather performance is typical for \*\*N-type 450-500W\*\* panels - At 28.0 kg (4.3 kg above \*\*N-type 450-500W\*\* median of 23.7 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty does the Renesola RS4-480~500NBG-E1 series come with? The RS4-480~500NBG-E1 series includes a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means Renesola guarantees a defined minimum power level for three decades, which is among the longer warranty standards currently available on the market and is an important factor when calculating long-term ROI for any PV installation. ### Are the Renesola RS4-480~500NBG-E1 panels suitable for ground-mounted solar farms? Yes, ground-mounted installations are one of the primary use cases for this series. The bifacial dual-glass design captures reflected light from the ground, grass, or gravel beneath the array, boosting overall energy yield. With up to 500 Wp output and N-type TOPCon cell technology, the series delivers a competitive cost per watt peak for utility-scale and commercial ground-mount projects. ### What is TOPCon technology in the RS4-480~500NBG-E1 and how does it compare to older PERC modules? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that delivers higher efficiency and a lower temperature coefficient than P-type PERC cells. The RS4-480~500NBG-E1 reaches up to approximately 23% module efficiency, compared to 21-22% for a typical PERC panel. In practice, this means more power from the same roof area and smaller performance losses on hot summer days. ### How does the RS4-480~500NBG-E1 perform in low-light and overcast conditions? N-type TOPCon cells have better low-irradiance response than standard PERC cells, producing relatively more energy in diffuse light. The half-cut MBB cell design further reduces resistive losses and improves performance under partial shading. In climates with frequent cloud cover, these characteristics translate into measurably higher annual energy yields compared to older monofacial PERC modules. ### How many cells does the RS4-480~500NBG-E1 have and what are its dimensions? The RS4-480~500NBG-E1 is built on a 182 mm half-cut cell platform in a 120-cell configuration (182-120). Typical module dimensions for this class are approximately 2094 × 1038 mm with a weight of around 28-29 kg in dual-glass format. Always verify exact dimensions in the current manufacturer datasheet, as minor variations can exist between variants within the same series. ### Is Renesola a reliable manufacturer and is the RS4-480~500NBG-E1 still available? Renesola is a Bloomberg Tier 1 manufacturer listed on the NYSE, with over a decade of experience in the solar industry. Tier 1 status confirms the financial stability required to honor long-term warranty commitments. The RS4-480~500NBG-E1 series is not discontinued and remains in active production. Availability in specific markets depends on local distributors, so it is worth checking current stock with your regional supplier before purchasing. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/rs4-480-500nbg-n-type-182-120-bifacial-module-with-dual-glas-4d468d4aa08e.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.3 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.1 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.0 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, lighter, +2.0 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.8 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +1.8 pp | | [Renesola RS4-470N-E1](https://comparepv.com/panel/renesola-rs4-470n-e1) | 470 W | -20 W, lighter, -0.9 pp | | [Renesola RS4-475N-E1](https://comparepv.com/panel/renesola-rs4-475n-e1) | 475 W | -15 W, lighter, -0.7 pp | | [Renesola RS4-480N-E1](https://comparepv.com/panel/renesola-rs4-480n-e1) | 480 W | -10 W, lighter, -0.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +70 W, lighter, +2.1 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +65 W, lighter, +1.9 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +60 W, lighter, +1.7 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +50 W, lighter, +1.7 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +50 W, lighter, +1.7 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +55 W, cooler, +1.6 pp | --- Source: https://comparepv.com/panel/renesola-rs4-490nbg-e1 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.