--- title: "Mogen Solar MG-420TD 420W Solar Panel - Specs & Review | ComparePV" description: "Mogen Solar MG-420TD 420W solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/mogen-solar-mg-420td" updated: 2026-09-11 --- # Mogen Solar MG-420TD Middle of its segment, modest efficiency 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Mogen Solar - **Model:** MG-420TD - **Series:** MG-TD (410–435 W) - **Rated power:** 420 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 420 W | 435 W | Weak - bottom 16% | | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,519 | | Power density | 215.1 | 220.2 | Weak - bottom 19% | 7,882 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 21.0 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,519 | | Power density | 215.1 | 220.2 | Weak - bottom 19% | 7,882 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 50.0 | 51.4 | Typical | 3,317 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.30% module efficiency** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 22.00%. - **215.1 watts per square metre** - Bottom 19% of the TOPCon 400-450 W segment, against a median of 220.2. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 420 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 32.26 V - **Current at Pmax (Imp):** 13.00 A - **Open-circuit voltage (Voc):** 38.76 V - **Short-circuit current (Isc):** 13.54 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 1.95 m2 - **Power density:** 215.1 Wp/m2 ### Warranty and degradation - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8519 of 14005 | | Power density | 7882 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 3317 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon cells** - N-type TOPCon technology delivers lower LID/LeTID degradation and better high-temperature performance than older P-type PERC cells, resulting in higher real-world annual energy yield, especially in summer conditions. - **Bifacial design** - The modules capture additional light reflected from the ground (light-colored membrane, gravel, concrete), providing an energy production boost beyond the standard 410-435 W nameplate rating under favorable installation conditions. - **30-year linear power warranty** - The manufacturer offers a 30-year power warranty, matching the longest warranties offered by leading TOPCon manufacturers (e.g., Lina Energy, SunLink) and exceeding the still-common 25-year standard offered by some competitors. - **Positive power tolerance** - The modules feature positive power tolerance, increasing confidence that actual installation output will not fall below the rated design value - relevant for ROI calculations. - **High efficiency for limited roof space** - 21-22% efficiency at up to 435 W maximizes energy production from limited roof area, making this series a strong fit for single-family homes and small commercial buildings. ## Cons - **No BNEF Tier 1 status** - Mogen Solar is not listed as a Tier 1 manufacturer by BloombergNEF, which may complicate securing favorable bank financing for larger commercial projects compared to Tier 1 competitors. - **Below-average efficiency for the TOPCon segment** - The 22% peak efficiency trails direct competitors at the same 435 W power class - Lina Energy LEPV 108 Nexa (22.26%), SunLink SL5N108 (22.3%), and SunKean SKT415~435M10 (22.27%) - meaning a slightly larger module footprint is needed for equivalent power. - **Series launched in 2022** - MG-TD dates to 2022, so it is based on an earlier TOPCon generation than the newest 2024-2026 competitor series, which achieve higher efficiencies at comparable power ratings. ## About this series The Mogen Solar MG-TD (410-435 W) series are modules based on **N-type TOPCon technology**, designed for high efficiency and stable operation in real roof conditions. In practice, they stand out due to their **bifacial design** - they can also utilize light reflected from the ground, which helps improve performance in locations where the roof or surroundings are conducive to reflection (e.g., a light-colored membrane, gravel, or concrete). From an investor's perspective, **low degradation over time** and long-term predictable energy production are also important, making it easier to calculate the profitability of the installation over many years. MG-TD is a good choice for those who want to maximize the effect from a limited area - on single-family homes, small businesses, and service facilities. The use of N-type and TOPCon cells helps reduce losses at higher temperatures, which is particularly important in the summer. The entire system is complemented by **positive power tolerance**, which means greater confidence that the installation will perform as designed. ## Notable figures - Efficiency of 21.3% is 0.7pp below the \*\*TOPCon 400-450W\*\* median (22.0%) - 215.1 W/m² power density is 5.1 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - requires larger installation area - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - At 21.0 kg, weight matches the \*\*TOPCon 400-450W\*\* median - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces ## Questions ### What is N-type TOPCon technology and why does the Mogen Solar MG-TD series use it? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces charge carrier recombination at silicon layer interfaces. In practical terms, this means higher efficiency (the MG-TD series reaches approximately 21%) and slower long-term degradation compared to older PERC cells. For a homeowner, it translates to more energy per square foot of roof space and more predictable energy production throughout the entire warranty period. ### Do the bifacial Mogen Solar MG-TD panels make sense on a typical pitched roof? Yes, though the bifacial gain is greatest when the surface beneath the module is highly reflective. On a pitched roof with a light-colored membrane, white gravel, or light gray metal sheeting, the rear-side contribution can add several to over ten percent of additional output. On dark roofing tiles the gain is smaller, but the TOPCon cell efficiency still works in your favor. The MG-TD series covers 410–435 W, making it easy to design a higher peak-power system. ### What is the power warranty duration for Mogen Solar MG-TD panels? The manufacturer provides a 30-year linear power warranty for the MG-TD series, which is among the stronger guarantees in the residential PV module market. Combined with the low degradation typical of N-type TOPCon cells, this means the panels should still produce the vast majority of their rated power after 25–30 years, supporting reliable LCOE calculations over a long investment horizon. ### Do Mogen Solar MG-TD panels lose much power on hot summer days? N-type TOPCon cells have a lower temperature coefficient than older PERC modules, meaning they lose a smaller percentage of output as module temperature rises above 25°C (77°F). Under typical summer conditions in Central Europe, where module temperatures often reach 140–160°F (60–70°C), the MG-TD series outperforms older polycrystalline and standard monocrystalline panels, helping maintain production during the hottest months. ### Who is the Mogen Solar MG-TD 410–435 W series the best fit for? The MG-TD series is ideal where roof space is limited and the owner wants to maximize power from every available square foot. With up to 435 W peak power and roughly 21% efficiency, you can achieve higher system output with fewer panels. It is a strong option for single-family homes, small businesses, and commercial buildings with pitched roofs where squeezing extra watts without expanding footprint is the priority. ### Is Mogen Solar a reputable manufacturer and is the MG-TD series still available? Mogen Solar is a Chinese manufacturer listed in international PV databases such as ENF and ComparePV, but it does not currently appear on the BloombergNEF Tier 1 module manufacturer list. The MG-TD (410–435 W) series is still in production and available for purchase. Before buying, verify the service warranty terms and how claims are handled locally, since warranties from non-EU manufacturers typically need to be enforced through a domestic distributor. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/TOPCon-430W-Bifacial-glass-glass-all-black-6a425eeed3a5.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +45 W, +2.5 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +45 W, cooler, +2.5 pp | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +50 W, +2.4 pp, +10 yr warranty | | [AIKO AIKO-A470-MAH54Mb](https://comparepv.com/panel/aiko-aiko-a470-mah54mb) | 470 W | +50 W, cooler, +2.3 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +40 W, cooler, +2.3 pp | | [TCL Zhonghuan HSM-BD54-LA470](https://comparepv.com/panel/tcl-zhonghuan-hsm-bd54-la470) | 470 W | +50 W, cooler, +2.3 pp | | [Mogen Solar MG-410TD](https://comparepv.com/panel/mogen-solar-mg-410td) | 410 W | -10 W, -0.3 pp | | [Mogen Solar MG-425TD](https://comparepv.com/panel/mogen-solar-mg-425td) | 425 W | Very close match | | [Mogen Solar MG-430TD](https://comparepv.com/panel/mogen-solar-mg-430td) | 430 W | +10 W, +0.5 pp | | [Mogen Solar MG-435TD](https://comparepv.com/panel/mogen-solar-mg-435td) | 435 W | +15 W, +0.7 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +90 W, cooler, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +75 W, cooler, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +85 W, cooler, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +70 W, cooler, +3.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +80 W, cooler, +3.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +80 W, cooler, +3.2 pp | --- Source: https://comparepv.com/panel/mogen-solar-mg-420td 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.