--- title: "DMEGC DM455M10RT-54HBW 455W Solar Panel - Specs & Review | ComparePV" description: "DMEGC DM455M10RT-54HBW 455W solar panel. Specs: 22.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/dmegc-hengdian-group-dmegc-magnetics-co-ltd-dm455m10rt-54hbw" updated: 2026-09-11 --- # DMEGC DM455M10RT-54HBW Light for its output, no clear weak spot 301 panels in the segment N-type 450-500 W ## Identity - **Manufacturer:** DMEGC - **Model:** DM455M10RT-54HBW - **Series:** INFINITY RT - **Rated power:** 455 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 450-500 W (301 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 455 W | 470 W | Weak - bottom 22% | | | Module efficiency | 22.80% | 22.52% | Typical | 2,714 | | Power density | 227.7 | 225.2 | Typical | 2,888 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 20.6 kg | 23.7 kg | Strong - top 13% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.80% | 22.52% | Typical | 2,714 | | Power density | 227.7 | 225.2 | Typical | 2,888 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 45.3 | 49.5 | Strong - top 13% | 674 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **45.3 kg per kWp** - Top 13% of the N-type 450-500 W segment, against a median of 49.5. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 455 W - **Efficiency:** 22.80 % - **Voltage at Pmax (Vmp):** 34.11 V - **Current at Pmax (Imp):** 13.34 A - **Open-circuit voltage (Voc):** 40.45 V - **Short-circuit current (Isc):** 14.24 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:** 0.048 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 108 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 20.6 kg - **Area:** 2.00 m2 - **Power density:** 227.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 20 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:** 398 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2714 of 14005 | | Power density | 2888 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 674 of 14005 | | Warranty | 21 of 14005 | ## Pros - **22.0–23.3% Efficiency – Premium Class** - The upper efficiency limit of 23.3% exceeds peer comparables by more than 1.8 percentage points versus Jinko Solar JS182MHC120 (21.48%) and by as much as 2.4 percentage points versus Vikram SOMERA (20.91%). In practical terms, this translates to approximately 8–11% more power from the same roof area with an identical number of modules. - **N-Type TOPCon with Low Temperature Coefficient and Degradation** - The temperature coefficient of Pmax is only −0.29%/°C (ENF Solar data, datasheet DM440-460M10RT), resulting in higher energy yield during summer months compared to older PERC cells (typically −0.35%/°C). Annual degradation after the first year is ≤0.4% — on par with the best-in-class N-type products in this segment. - **30-Year Power Warranty at ≥87.4%** - The manufacturer guarantees at least 87.4% of nominal power output after 30 years of operation (official DMEGC warranty document, PDF 2025-12). None of the peer comparables in the referenced comparison declare a 30-year power warranty, providing a meaningful advantage in NPV calculations for projects with a 25+ year horizon. - **Confirmed Tier-1 Status and Strong Manufacturer Position** - DMEGC Solar maintained its BloombergNEF Tier-1 status in Q3 2025, appears on the S&P Global Tier-1 list, and ranked 5th globally in the Wood Mackenzie 2025 ranking. With operations dating back to 1980, installations based on these modules will face no obstacles during bankability due diligence for external project financing. - **RT Technology – Higher Power Density per Module** - The rectangular M10RT cells (module dimensions 1762 × 1134 mm, 24.5 kg for the 440–460 W variants) eliminate the inactive corners of conventional square cells, maximizing the utilization of the module's active area. In space-constrained installations, this allows a higher total system power to be achieved without increasing the number of modules. ## Cons - **Product Warranty of 20–25 Years Depending on Variant** - Certain variants in the series (including DM440-460M10RT-54HBB) carry only a 20-year product warranty, whereas leading Tier-1 manufacturers (Jinko Tiger Neo, LONGi Hi-MO X6) have standardized to a 25-year product warranty across their entire portfolios. The model suffix must be verified prior to purchase — a 5-year difference is material when assessing operational risk. - **440–465 Wp Variants Are Monofacial Only** - The analyzed power range (440–465 Wp, is\_bifacial: false) does not provide rear-side energy yield (bifacial gain is typically 5–15% on a high-albedo surface). Bifacial INFINITY RT variants in this power range were presented by DMEGC at Intersolar 2024 (pv-magazine.com, June 2024); however, their availability through Polish distribution channels requires confirmation with the local importer. ## About this series The DMEGC INFINITY RT solar panel series introduces a new level of quality to the Polish market through the use of innovative **rectangular N-Type TOPCon cells**. The use of RT (Rectangular Technology) allows for significantly better utilization of the module surface area, which directly translates into maximizing yields from every square meter of the roof. This is a key solution for investors facing limited mounting space who do not want to sacrifice high system power. These modules stand out with exceptional **resistance to light-induced degradation** and excellent performance in low-light conditions, which ensures stable energy production throughout the year in the Polish climate. Thanks to their advanced design, this series effectively minimizes energy losses resulting from high ambient temperatures, while offering an **enhanced bifaciality factor** in bifacial variants. DMEGC INFINITY RT is a proposal for the most demanding residential users and modern commercial projects where long-term profitability and reliability matter. What sets them apart from the competition is the precise combination of record-breaking power density and aesthetic design, making them a **standard in the premium segment**. By choosing this series, you eliminate the risk of rapid efficiency drops, investing in the technology of tomorrow available today. ## Notable figures - Efficiency of 22.8% matches the \*\*N-type 450-500W\*\* median - Power density of 227.7 W/m² matches the \*\*N-type 450-500W\*\* median - At -0.29%/°C, hot weather performance is typical for \*\*N-type 450-500W\*\* panels - 20.6 kg weight - 3.1 kg lighter than \*\*N-type 450-500W\*\* median (23.7 kg), reducing installation effort - In the top 19% for efficiency among all N-type panels ## Questions ### What is RT technology in DMEGC INFINITY RT panels and why does it matter for rooftop installations? RT stands for Rectangular Technology, referring to the use of rectangular N-Type TOPCon cells instead of conventional cells with chamfered corners. This allows the module to fill the entire glass surface more efficiently, eliminating dead zones. In practice, this translates to higher power density — more watts from the same roof area. This is a key advantage on a typical pitched residential roof, where every square centimeter counts. ### What warranty do DMEGC INFINITY RT panels come with and what does it cover? The INFINITY RT series offers a 25-year product warranty covering physical defects and module construction, along with a 30-year linear power output warranty. Degradation is less than 1% in the first year and no more than 0.4% per year in subsequent years, guaranteeing at least 87.4% of original rated power after 30 years of operation. This is one of the longest and most competitive warranties currently available in the premium panel segment. ### Do DMEGC INFINITY RT panels perform well in winter and under low-irradiance conditions? Yes, the N-Type TOPCon technology used in the INFINITY RT series delivers above-average performance under diffuse and low-irradiance conditions typical of autumn and winter months in northern and central Europe. N-Type cells also exhibit a lower temperature coefficient than older P-Type cells, reducing power losses on hot summer days. The combined result is stable, consistent energy production throughout the entire year. ### What is the maximum power output of a DMEGC INFINITY RT panel and how many panels do I need for a residential installation? INFINITY RT series modules in the M10RT variant achieve up to 465 Wp peak power. For a typical prosumer installation of 6 kWp, approximately 13 panels are sufficient, while a 10 kWp system requires approximately 22 panels. The high power density enabled by RT technology means you can fit a larger system on the same roof footprint compared to standard modules with lower power density. ### How does the DMEGC INFINITY RT differ from standard TOPCon panels available on the market? The key differentiator is the rectangular cell shape (RT), which increases the module fill factor compared to the conventional pseudo-square cells used in the majority of TOPCon modules. The INFINITY RT series combines this with SMBB (Super Multi Busbar) technology, which improves current collection and reduces the impact of microcracks. The result is higher module efficiency and superior resistance to degradation over decades of service. ### Is DMEGC a reliable manufacturer and will the warranty be honored? DMEGC Solar holds Tier 1 manufacturer status according to Bloomberg NEF, the highest possible rating for financial and technical credibility in the photovoltaic industry. The company actively supplies modules to the European market and maintains a network of authorized distributors. Its established, long-standing market position provides a genuine assurance that warranty claims will be fulfilled throughout the full 25- and 30-year coverage periods. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/67650ed15163d-71bfcc147bd7.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +40 W, cooler, +2.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +50 W, cooler, +1.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +35 W, cooler, +1.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +45 W, cooler, +1.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +45 W, cooler, +1.7 pp | | [Gokin GK-3-54HGb-500M](https://comparepv.com/panel/gokin-gk-3-54hgb-500m) | 500 W | +45 W, cooler, +1.7 pp | | [DMEGC DM435M10RT-B54HBB-L](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-dm435m10rt-b54hbb-l) | 435 W | -20 W, -1.0 pp | | [DMEGC DM440M10RT-54HSW/HBW](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-dm440m10rt-54hsw-hbw) | 440 W | -15 W, -0.8 pp | | [DMEGC DM445M10RT-54HSW/HBW](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-dm445m10rt-54hsw-hbw) | 445 W | -10 W, -0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +55 W, cooler, +2.2 pp | --- Source: https://comparepv.com/panel/dmegc-hengdian-group-dmegc-magnetics-co-ltd-dm455m10rt-54hbw Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.