--- title: "Renewsys DESERV Extreme 108X-505 Solar Panel: Specs & Datasheet | ComparePV" description: "Renewsys DESERV Extreme 108X-505 solar panel. Specs: 22.75% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/renewsys-deserv-extreme-108x-505" image: "https://comparepv.com/og/panel/renewsys-deserv-extreme-108x-505.png" updated: 2026-09-11 --- # Renewsys DESERV Extreme 108X-505 Middle of its segment, weak in heat 435 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** Renewsys - **Model:** DESERV Extreme 108X-505 - **Series:** DESERV Extreme 108X - **Rated power:** 505 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 500-550 W (435 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 505 W | 510 W | Typical | | | Module efficiency | 22.75% | 22.74% | Typical | 3,264 | | Power density | 227.5 | 227.4 | Typical | 3,247 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 21% | 6,152 | | Weight (kg) | 25.0 kg | 27.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.75% | 22.74% | Typical | 3,264 | | Power density | 227.5 | 227.4 | Typical | 3,247 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 21% | 6,152 | | Weight per kWp | 49.5 | 52.4 | Typical | 3,051 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 21% of the TOPCon 500-550 W segment, against a median of -0.290. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 505 W - **Efficiency:** 22.75 % - **Voltage at Pmax (Vmp):** 32.65 V - **Current at Pmax (Imp):** 15.49 A - **Open-circuit voltage (Voc):** 38.84 V - **Short-circuit current (Isc):** 16.30 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1959 mm - **Width:** 1133 mm - **Thickness:** 35 mm - **Weight:** 25.0 kg - **Area:** 2.22 m2 - **Power density:** 227.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3264 of 14129 | | Power density | 3247 of 14129 | | Temperature coefficient | 6152 of 14129 | | Weight | 3051 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Highest efficiency in the peer group** - Efficiency up to 23.2% places the DESERV Extreme 108X series at the top of its peer comparables - above Canadian Solar's TOPBiHiKu6 (22.8%) and on par with or better than Sunpro Power's TOPCon 210R (23.17%) and Huasun's Aurora Pro (23.17%) at the same maximum power of 515 Wp. - **N-type TOPCon cells with half-cut technology** - The G12R half-cut cell format reduces resistive losses and increases tolerance to partial shading and microcracks, resulting in more stable energy yield under real operating conditions compared to older PERC cells. - **Dual-glass construction with bifacial technology** - The glass-glass structure provides higher mechanical rigidity and resistance to hail, moisture, and corrosion, while bifaciality (rated by the manufacturer at up to 85%) recovers additional energy from reflected light without increasing installation footprint - particularly beneficial for ground-mount farms on light surfaces and flat-roof installations. - **30-year linear power warranty** - The manufacturer backs the series with a 30-year power output warranty, in line with best practices among tier-1 peers (typically 25-30 years at Canadian Solar or Huasun), giving investors predictable LCOE in long-term financial models. - **Low temperature coefficient of -0.29%/°C** - A low temperature-related power loss limits output drops on hot days, which is significant for installations in high-irradiance, high-ambient-temperature climates, improving real annual energy yield compared to PERC-based panels. ## Cons - **12-year product warranty below segment trend** - The product warranty is 12 years, while a growing number of tier-1 TOPCon manufacturers are shifting to a 15-year product warranty alongside the same 30-year power warranty - this gap may affect perceived service value compared to the latest competing offers. ## About this series The DESERV Extreme 108X series is a compact module family built for installations where maximizing output per square meter of roof or ground space matters just as much as conversion efficiency. The panel is built around **N-type TOPCon cells** in the G12R format, which combined with **half-cut cell technology** reduces resistive losses and improves resilience against partial shading and microcracks. Thanks to its **glass-glass (dual glass) construction**, the module gains extra mechanical rigidity and better resistance to moisture, hail, and corrosive conditions, translating into a genuinely longer service life in demanding climates. The use of **bifacial energy generation** allows the module to capture additional energy from reflected light on its rear side, boosting energy yield without expanding the installation footprint - a solution particularly attractive for ground-mount solar farms on bright terrain and flat-roof projects. A low power temperature coefficient keeps output stable even on hot days. The manufacturer backs the series with a **30-year power warranty**, giving investors and installers confidence in long-term project profitability and a predictable LCOE. ## Notable figures - At 22.8% efficiency, this panel is on par with typical \*\*TOPCon 500-550W\*\* modules - At 227.5 W/m² power density, roof space requirements are typical for \*\*TOPCon 500-550W\*\* panels - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 500-550W\*\* panels - Weight of 25.0 kg (2.0 kg below \*\*TOPCon 500-550W\*\* median of 27.0 kg) allows easier transport and roof mounting - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### How much power does the DESERV Extreme 108X panel produce and what installations is it suited for? The module delivers up to 515 Wp of maximum power from just 108 cells in the G12R format, giving high power density on a relatively compact footprint. It works well wherever maximizing available space matters - both on residential roofs and in larger commercial or ground-mount PV farms, where fewer high-power panels simplify system design and mounting. ### How does bifacial technology in the DESERV Extreme 108X differ from a standard monofacial panel? A bifacial panel captures energy not only through its front surface but also through the rear, using light reflected off the ground, roof, or snow. In practice this adds several to over a dozen percent extra energy yield without increasing the installation footprint. The effect is strongest on bright, reflective surfaces (gravel, white roofing, snow) and with ground-mount or flat-roof installations that allow clearance beneath the module. ### What warranty comes with Renewsys DESERV Extreme 108X panels? The manufacturer provides a 12-year product warranty along with a 30-year linear power warranty. Such a long power warranty is now standard for premium-class panels built on N-type TOPCon cells, reflecting a slow, predictable degradation curve that translates into stable long-term returns and a lower LCOE for the installation. ### What is TOPCon cell technology and why does Renewsys use it in this series? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces carrier recombination and achieves higher conversion efficiency than older P-type PERC cells. Combined with half-cut technology and the G12R format, this results in lower resistive losses, better resistance to microcracks and partial shading, and more stable performance under high temperatures on hot days. ### Does the glass-glass construction of the DESERV Extreme 108X improve durability in harsh weather? Yes, the dual glass construction replaces the rear backsheet film with an additional glass layer, significantly increasing the module's mechanical stiffness and resistance to moisture, hail, and corrosion. This helps the panel better withstand extreme climate conditions, age more slowly, and resist microdamage, directly supporting the manufacturer's 30-year power warranty. ### Is Renewsys a reliable, well-established solar panel manufacturer? Renewsys is an India-based manufacturer holding Tier 1 status, meaning it appears on the list of the most trusted, fully vertically integrated module makers that regularly self-finance production and undergo bank due diligence. Tier 1 status matters when financing an installation through a loan or lease, as banks and insurers are more likely to accept panels from manufacturers with this reputation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/37b508_2c09fd9f89cd40688e39ae5540f7bd9d-5f3efbcf8f01.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.2 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, +1.9 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, +1.9 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +50 W, cooler, +1.9 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 | | [Renewsys DESERV Extreme 108X-490](https://comparepv.com/panel/renewsys-deserv-extreme-108x-490) | 490 W | -15 W, -0.7 pp | | [Renewsys DESERV Extreme 108X-495](https://comparepv.com/panel/renewsys-deserv-extreme-108x-495) | 495 W | -10 W, -0.4 pp | | [Renewsys DESERV Extreme 108X-500](https://comparepv.com/panel/renewsys-deserv-extreme-108x-500) | 500 W | -0.2 pp | | [Renewsys DESERV Extreme 108X-510](https://comparepv.com/panel/renewsys-deserv-extreme-108x-510) | 510 W | +0.2 pp | | [Renewsys DESERV Extreme 108X-515](https://comparepv.com/panel/renewsys-deserv-extreme-108x-515) | 515 W | +10 W, +0.4 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +55 W, cooler, +2.1 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +45 W, lighter, +1.6 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +35 W, cooler, +1.6 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +35 W, cooler, +1.6 pp | --- Source: https://comparepv.com/panel/renewsys-deserv-extreme-108x-505 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.