--- title: "Renewsys DESERV EXTREME 120X-490 Solar Panel: Specs & Datasheet | ComparePV" description: "Renewsys DESERV EXTREME 120X-490 solar panel. Specs: 22.60% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/renewsys-deserv-extreme-120x-490" image: "https://comparepv.com/og/panel/renewsys-deserv-extreme-120x-490.png" updated: 2026-09-11 --- # Renewsys DESERV EXTREME 120X-490 Solid all-round for its segment 1,096 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Renewsys - **Model:** DESERV EXTREME 120X-490 - **Series:** DESERV Extreme 120X (M10R TOPCon Bifacial Dual Glass) - **Rated power:** 490 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1096 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 490 W | 465 W | Strong - top 12% | | | Module efficiency | 22.60% | 22.52% | Typical | 3,716 | | Power density | 226.0 | 225.2 | Typical | 3,773 | | Temperature coefficient | -0.292 | -0.290 | Typical | 6,115 | | Weight (kg) | 26.5 kg | 24.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.60% | 22.52% | Typical | 3,716 | | Power density | 226.0 | 225.2 | Typical | 3,773 | | Temperature coefficient | -0.292 | -0.290 | Typical | 6,115 | | Weight per kWp | 54.1 | 52.2 | Typical | 8,379 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 22.60 % - **Voltage at Pmax (Vmp):** 35.97 V - **Current at Pmax (Imp):** 13.65 A - **Open-circuit voltage (Voc):** 43.73 V - **Short-circuit current (Isc):** 14.31 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.292 %/degC - **Temperature coefficient of Voc:** -0.276 %/degC - **Temperature coefficient of Isc:** 0.057 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 1914 mm - **Width:** 1133 mm - **Thickness:** 35 mm - **Weight:** 26.5 kg - **Area:** 2.17 m2 - **Power density:** 226.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3716 of 14129 | | Power density | 3773 of 14129 | | Temperature coefficient | 6115 of 14129 | | Weight | 8379 of 14129 | | Warranty | 21 of 14129 | ## Pros - **High efficiency up to 23.06%** - M10R TOPCon cells deliver conversion efficiency up to 23.06%, placing the series above comparable models Silfab SIL HM (21%) and Lina Energy LEPV 132 HC ICON PLUS (21.06%) at the same 500 Wp maximum power rating. - **30-year linear power warranty** - RenewSys offers a 30-year linear power output warranty, a premium standard in the TOPCon segment that exceeds the typical 25-year linear warranties offered by many tier-1 manufacturers, reducing investor risk over the long-term operating horizon. - **Bifacial dual-glass construction** - A dual-glass design in place of a traditional polymer backsheet significantly improves resistance to PID degradation, moisture ingress, and microcracks, while enabling additional energy yield from reflected albedo - particularly effective on bright ground surfaces at utility-scale farms and large industrial rooftops. - **Lower first-year degradation (TOPCon)** - N-type TOPCon technology exhibits a lower LID coefficient and better performance at high temperatures than legacy PERC cells, translating into higher real-world annual energy yield and lower LCOE for the installation. - **Tier-1 manufacturer, 14 years in operation** - RenewSys (founded in 2011, headquartered in India) holds tier-1 bankable status, easing project financing for utility-scale installations where banks require a documented supply track record and financial references. ## Cons - **Efficiency below segment leader Gokin** - Maximum efficiency of 23.06% trails Gokin's GK-3-54HGF (24.5%) at the same 500 Wp maximum power rating - at comparable module area, the competitor delivers higher yield per unit of surface. - **Product warranty of 12 years below market maximum** - The standard product warranty is 12 years, while some premium TOPCon manufacturers now offer 15-25 year product warranties - this may matter when comparing total cost of ownership in utility-scale projects. ## About this series The **DESERV Extreme 120X** series consists of RenewSys solar modules built on **M10R TOPCon** cells, combining high conversion efficiency with the structural durability of a glass-glass design. The use of **half-cut** cells arranged in a 120-cell configuration reduces power losses under partial shading and lowers stress-related microcracking, resulting in greater long-term reliability. The **bifacial dual-glass** construction captures reflected light from the ground surface, boosting energy yield without increasing the installation footprint - a particularly attractive feature for ground-mounted solar farms on reflective terrain and industrial rooftops with large flat surfaces. Replacing the traditional rear backsheet with a second glass layer significantly improves resistance to moisture ingress, microcracks, and PID degradation, extending the module's real-world lifespan and keeping power output stable for decades. Thanks to TOPCon technology, these modules achieve a lower temperature coefficient and reduced first-year degradation compared to conventional PERC panels, directly lowering the project's LCOE. The 120X M10R series is well suited for both commercial installations and demanding utility-scale projects, where predictable return on investment and resilience against harsh environmental conditions are key priorities. ## Notable figures - At 22.6% efficiency, this panel is on par with typical \*\*TOPCon 450-500W\*\* modules - Power density of 226.0 W/m² matches the \*\*TOPCon 450-500W\*\* median - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 450-500W\*\* median - At 26.5 kg, this panel is 2.5 kg heavier than the \*\*TOPCon 450-500W\*\* median (24.0 kg) - more demanding for installation crews - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## Questions ### What is the maximum power output of the DESERV Extreme 120X panel and what does it depend on? Modules in the DESERV Extreme 120X M10R series reach a maximum power output of up to 500 Wp. Actual yield depends on irradiance, tilt angle, and - since this is a bifacial module - on the amount of reflected light hitting the rear side. Bright surfaces such as gravel or white roofing increase the additional energy gain generated from the back of the panel. ### How does the dual-glass bifacial design differ from a standard panel with a rear backsheet? In a dual-glass module, the rear backsheet is replaced with a second glass layer, significantly improving resistance to moisture, microcracks, and PID degradation. The transparent rear side also allows the panel to capture light reflected from the ground, generating extra energy without increasing the installation footprint - a major advantage for solar farms and large industrial rooftops. ### What warranty comes with RenewSys DESERV Extreme 120X panels? The manufacturer provides a 12-year product warranty and a 30-year linear power output warranty. RenewSys holds Tier 1 manufacturer status, which adds further confidence in long-term service support and the financial stability behind the warranty. ### How does the TOPCon technology in these panels differ from classic PERC cells? The M10R TOPCon cells offer higher conversion efficiency, a lower temperature coefficient, and less first-year degradation compared to traditional PERC cells. This results in higher and more stable energy yield over the panel's lifetime, ultimately lowering the LCOE compared to similarly rated PERC panels. ### Are DESERV Extreme 120X panels suitable for industrial installations and solar farms, or just residential roofs? The glass-glass construction with bifacial cells and power output up to 500 Wp makes this series primarily suited for commercial and utility-scale projects, where predictable ROI and resistance to harsh conditions matter most. The panels also work well on large flat industrial roofs, though due to their size and weight they are less commonly used on small pitched residential roofs. ### Who manufactures the DESERV Extreme 120X modules, and is it a reliable supplier? The panels are manufactured by RenewSys, an India-based Tier 1 producer, meaning the modules are bankable and recognized by financiers of large PV projects. The company invests in TOPCon and bifacial construction development, making it a trustworthy partner for both commercial investors and utility-scale solar farm developers. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/37b508_6df84fdb4c694cac8ae71620cbb5be0a-08f796b2c373.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.4 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.2 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.1 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +15 W, cooler, +2.1 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.9 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.9 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +1.9 pp | | [Renewsys DESERV EXTREME 120X-465](https://comparepv.com/panel/renewsys-deserv-extreme-120x-465) | 465 W | -25 W, -1.2 pp | | [Renewsys DESERV EXTREME 120X-470](https://comparepv.com/panel/renewsys-deserv-extreme-120x-470) | 470 W | -20 W, -0.9 pp | | [Renewsys DESERV EXTREME 120X-475](https://comparepv.com/panel/renewsys-deserv-extreme-120x-475) | 475 W | -15 W, -0.7 pp | | [Renewsys DESERV EXTREME 120X-480](https://comparepv.com/panel/renewsys-deserv-extreme-120x-480) | 480 W | -10 W, -0.5 pp | | [Renewsys DESERV EXTREME 120X-485](https://comparepv.com/panel/renewsys-deserv-extreme-120x-485) | 485 W | -0.2 pp | | [Renewsys DESERV EXTREME 120X-495](https://comparepv.com/panel/renewsys-deserv-extreme-120x-495) | 495 W | +0.2 pp | | [Renewsys DESERV EXTREME 120X-500](https://comparepv.com/panel/renewsys-deserv-extreme-120x-500) | 500 W | +10 W, +0.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +70 W, cooler, +2.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +65 W, cooler, +2.0 pp | --- Source: https://comparepv.com/panel/renewsys-deserv-extreme-120x-490 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.