--- title: "MY Solar MYM2054-270 270W Solar Panel - Specs & Review | ComparePV" description: "MY Solar MYM2054-270 270W solar panel. Specs: 21.20% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/my-solar-mym2054-270" updated: 2026-09-11 --- # MY Solar MYM2054-270 Efficiency leader, heavy for its output 74 panels in the segment PERC 250-300 W ## Identity - **Manufacturer:** MY Solar - **Model:** MYM2054-270 - **Series:** M2 series - **Rated power:** 270 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 250-300 W (74 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 270 W | 275 W | Typical | | | Module efficiency | 21.20% | 17.21% | Strong - top 5% | 9,076 | | Power density | 183.9 | 172.1 | Strong - top 12% | 13,119 | | Temperature coefficient | -0.370 | -0.370 | Typical | 13,081 | | Weight (kg) | 19.0 kg | 18.5 kg | Weak - bottom 19% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.20% | 17.21% | Strong - top 5% | 9,076 | | Power density | 183.9 | 172.1 | Strong - top 12% | 13,119 | | Temperature coefficient | -0.370 | -0.370 | Typical | 13,081 | | Weight per kWp | 70.4 | 66.5 | Weak - bottom 19% | 13,426 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **21.20% module efficiency** - Top 5% of the PERC 250-300 W segment, against a median of 17.21%. Ranked 9,076th in the whole database. - **183.9 watts per square metre** - Top 12% of the PERC 250-300 W segment, against a median of 172.1. ### Watch out for - **70.4 kg per kWp** - Bottom 19% of the PERC 250-300 W segment, against a median of 66.5. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 270 W - **Efficiency:** 21.20 % - **Voltage at Pmax (Vmp):** 28.89 V - **Current at Pmax (Imp):** 9.35 A - **Open-circuit voltage (Voc):** 34.84 V - **Short-circuit current (Isc):** 9.75 A - **Max system voltage:** 600 V ### Temperature - **Temperature coefficient of Pmax:** -0.370 %/degC - **Temperature coefficient of Voc:** -0.290 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 54 ### Physical - **Length:** 1480 mm - **Width:** 992 mm - **Thickness:** 35 mm - **Weight:** 19.0 kg - **Area:** 1.47 m2 - **Power density:** 183.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 80.7 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.70 % - **Output after 30 years:** 208 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9076 of 14005 | | Power density | 13119 of 14005 | | Temperature coefficient | 13081 of 14005 | | Weight | 13426 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Efficiency up to 21.2% – competitive vs. peers** - Maximum efficiency of 21.2% at 385 Wp matches or exceeds comparable models at the same power class: Solarwatt Vision GM 3.0 pure (20.7%), Suntech Ultra S mini (21.1%), and JA Solar JAM60D20 (20.6%). This is a strong result for PERC technology, which typically trails newer N-type platforms. - **Half-cut cells + MBB busbars** - The combination of half-cut cell technology with multi-busbar (MBB) design shortens the electron flow path, reducing resistive losses and improving cell resistance to microcracks. It also improves module behavior under partial shading, stabilizing real-world energy yield. - **High PID resistance** - The modules feature enhanced resistance to potential-induced degradation (PID), limiting power loss from electrochemical effects and supporting stable output throughout the 25-year linear power warranty period. - **Broad power range: 270-385 Wp, 11 variants** - An extensive lineup of 11 power variants from 270 to 385 Wp gives flexibility to match module selection to specific roof area and system requirements, for both residential and commercial installations. ## Cons - **Series discontinued** - The M2 series is discontinued, meaning limited availability of replacement modules in case of failure or warranty claims, and potential difficulty servicing installations long-term despite the 12-year product warranty. - **Manufacturer not on BNEF Tier 1 list** - MY Solar does not appear on BloombergNEF's Tier 1 bankable manufacturer list (updated quarterly; Q2 2026 covers 42 companies including Jinko, LONGi, Trina, and JA Solar). This can complicate non-recourse project financing and reduce confidence from insurers and institutional investors. - **Product warranty only 12 years** - A 12-year product warranty falls below the current market standard, where even budget-segment panels increasingly offer 15 years, and premium models reach 25-30 years combined product/power warranty. - **PERC – legacy cell technology** - PERC cells are being superseded by N-type platforms (TOPCon, HJT), which dominate the premium segment in 2026 with higher efficiency ceilings (22-23%) and lower annual degradation. This may affect the installation's relative residual value over the long term. ## About this series MY Solar M2 series photovoltaic panels are a solution designed to maximize energy yields while maintaining the highest aesthetics of the installation. The use of advanced **Half-cut cell technology** allows for a significant reduction in resistance losses and better module performance in partial shading conditions, which directly translates into power production stability. Thanks to the use of **Multi-busbar (MBB)**, the M2 series features a shortened electron flow path, which not only increases efficiency but also enhances the mechanical resistance of the cells to micro-cracks. For investors seeking reliability, high **resistance to potential-induced degradation (PID)** is key, guaranteeing the maintenance of high performance parameters over many years of operation. These modules are an ideal choice for owners of single-family homes and businesses that care about the optimal use of available roof space. What sets the M2 series apart from the competition is the perfect balance between innovative technology and durability in difficult weather conditions. These panels effectively handle heavy snow and wind loads, ensuring safety and peace of mind in the Polish climate. It is a smart investment for those who focus on **reliability and modern design** of PV systems. ## Notable figures - Efficiency of 21.2% is 1.8pp above the \*\*PERC 0-400W\*\* median (19.4%) - At 183.9 W/m², this panel generates 10.5 W/m² less per unit area than \*\*PERC 0-400W\*\* median (194.4 W/m²) - Temperature coefficient of -0.37%/°C matches the \*\*PERC 0-400W\*\* median - 19.0 kg weight - 1.5 kg lighter than \*\*PERC 0-400W\*\* median (20.5 kg), reducing installation effort - Ranked #9076 out of 14005 panels for efficiency in the database ## Questions ### Are MY Solar M2 solar panels still available for purchase? The MY Solar M2 series has been discontinued and is no longer actively manufactured. Availability of new modules depends entirely on remaining distributor stock. Before placing an order, verify current inventory with your supplier, confirm order fulfillment is possible, and check that technical documentation and after-sales service remain accessible. ### What warranty does the MY Solar M2 series come with, and what does it cover? MY Solar provides a 12-year product warranty on M2 series panels covering material and manufacturing defects. A separate 25-year linear power output warranty guarantees that the modules maintain adequate performance parameters over a quarter century of operation — a standard level of coverage for PERC modules in the residential prosumer market. ### What does the Half-cut PERC cell technology and Multi-busbar (MBB) design actually do in the MY Solar M2 series? Half-cut cells split each standard cell in two, shortening the current path and reducing resistive losses. MBB busbars further shorten that path and improve mechanical resistance to microcracks. PERC technology enhances rear-surface light absorption. The practical result is higher module efficiency and better performance under partial shading conditions — such as shade cast by chimneys or dormers. ### How many MY Solar M2 panels at 385 Wp do I need for a single-family home? A typical single-family home consuming 3,500–5,000 kWh per year usually requires 8–14 M2 panels (a 3–5 kWp system). The exact number depends on roof orientation, tilt angle, shading, and individual energy consumption. A qualified installer should perform a proper site assessment and size the system for your specific situation. ### Can MY Solar M2 modules handle heavy snow loads and high winds in a Central European climate? Yes, the M2 series is designed for demanding weather conditions, including significant snow loads and strong winds — both relevant concerns in Poland, especially in mountainous regions or areas with heavy snowfall. For exact allowable mechanical load ratings (in Pa), consult the datasheet for your specific model variant before installation. ### Are MY Solar M2 panels resistant to Potential Induced Degradation (PID)? Yes, the M2 series features high resistance to Potential Induced Degradation (PID), which can cause progressive power loss in modules operating in high-voltage systems. This is especially important in larger string-inverter installations where system voltages are elevated. Thanks to PID resistance, M2 modules maintain stable output parameters throughout their service life. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/MYM2054-1-d0adfb301820.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Cooler, lighter, +2.1 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, lighter, +2.1 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | Cooler, +2.1 pp, +5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | Lighter, +1.8 pp, +5 yr warranty | | [Gamko New Energy GKA182M240W](https://comparepv.com/panel/gamko-new-energy-gka182m240w) | 240 W | Lighter, +1.8 pp, +5 yr warranty | | [Gamko New Energy GKA182M260W](https://comparepv.com/panel/gamko-new-energy-gka182m260w) | 260 W | Lighter, +1.8 pp, +5 yr warranty | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | Lighter, +1.8 pp, +5 yr warranty | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | +30 W, +1.8 pp, +5 yr warranty | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | +50 W, +1.8 pp, +5 yr warranty | | [JA Solar MYM2054-270](https://comparepv.com/panel/ja-solar-mym2054-270) | 270 W | Very close match | | [Gamko New Energy GKA157F300W](https://comparepv.com/panel/gamko-new-energy-gka157f300w) | 300 W | +30 W, -0.8 pp, +5 yr warranty | | [JA Solar MYP3054-270](https://comparepv.com/panel/ja-solar-myp3054-270) | 270 W | Lighter, -3.2 pp | | [MY Solar MYP3054-270](https://comparepv.com/panel/my-solar-myp3054-270) | 270 W | Lighter, -3.2 pp | | [JA Solar MYP3054-265](https://comparepv.com/panel/ja-solar-myp3054-265) | 265 W | Lighter, -3.5 pp | | [MY Solar MYP3054-265](https://comparepv.com/panel/my-solar-myp3054-265) | 265 W | Lighter, -3.5 pp | | [JA Solar MYP3054-260](https://comparepv.com/panel/ja-solar-myp3054-260) | 260 W | -10 W, lighter, -3.9 pp | --- Source: https://comparepv.com/panel/my-solar-mym2054-270 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.