--- title: "MY Solar MY-M12/144-700 700W Solar Panel - Specs & Review | ComparePV" description: "MY Solar MY-M12/144-700 700W solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/my-solar-my-m12-144-700" updated: 2026-09-11 --- # MY Solar MY-M12/144-700 Middle of its segment, weak in heat 3,488 panels in the 600-800 W band, all technologies ## Identity - **Manufacturer:** MY Solar - **Model:** MY-M12/144-700 - **Series:** Half Cell - **Rated power:** 700 W - **Cell technology:** Monocrystalline ## How it compares Compared against 600-800 W band, all technologies (3488 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 700 W | 645 W | Strong - top 20% | | | Module efficiency | 22.30% | 22.71% | Typical | 5,100 | | Power density | - | 227.2 | | | | Temperature coefficient | -0.350 | -0.290 | Weak - bottom 3% | 10,419 | | Weight (kg) | - | 34.0 kg | | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 6% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.71% | Typical | 5,100 | | Power density | - | 227.2 | | | | Temperature coefficient | -0.350 | -0.290 | Weak - bottom 3% | 10,419 | | Weight per kWp | - | 52.8 | | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 6% | 9,798 | ### Watch out for - **-0.350 %/°C temperature coefficient** - Bottom 3% of the 600-800 W band, against a median of -0.290. Ranked 10,419th in the whole database. - **25 year performance warranty** - Bottom 6% of the 600-800 W band, against a median of 30 yrs. Ranked 9,798th in the whole database. - **Best for:** Commercial, utility-scale, shaded-installations and hot-climate. - **Not ideal for:** Hot climates and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 700 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 39.58 V - **Current at Pmax (Imp):** 17.69 A - **Open-circuit voltage (Voc):** 46.75 V - **Short-circuit current (Isc):** 18.92 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.290 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 144 ### Physical ### Warranty and degradation - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5100 of 14005 | | Power density | 13991 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 13988 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Half-cut cells reduce resistive losses** - Splitting cells in half lowers internal resistance losses and reduces hot-spot temperature by up to approx. 25°C compared to full-cell modules, resulting in higher and more stable energy yield. - **Improved partial shading resilience** - Physically dividing the module into two independent electrical sections means shading on one half does not fully halt production from the other, which is practically relevant on roofs with chimneys, dormers, or nearby obstructions. - **Multi-busbar (MBB) technology** - An increased number of busbars shortens the electron flow path, improving current-collection efficiency while also reducing the risk of silicon microcracks during transport and installation. - **Low temperature coefficient** - The panels maintain higher efficiency under high summer temperatures than modules with a standard temperature coefficient, which matters on dark roofs or in warmer climates. - **Flexible power range 660-700 Wp** - Five power variants within one series (660-700 Wp) at 21.1-22.3% efficiency allow matching the panel to a specific roof area without changing installation technology. ## Cons - **Efficiency trails segment leaders** - The series' peak efficiency is 22.3%, while comparable 700 W competitor modules (Luxor Solar HJT 22.74%, Sunket 22.5%, Mysolar USA TOPCon 22.53%) achieve higher values. This reflects the use of older PERC technology rather than N-type TOPCon/HJT. - **No bifacial variant available** - Unlike all three comparable series on the market (Luxor, Sunket, Mysolar USA), which offer bifacial modules, the Half Cell series is monofacial only, forgoing the additional rear-side energy gain from reflected light (typically 5-15% depending on ground albedo). - **Manufacturer lacks Tier-1 (BNEF) status** - MY Solar currently does not hold BNEF Tier-1 bankable manufacturer status, which may limit bank financing availability for larger commercial installations and affect investment insurance terms. ## About this series The MY Solar Half Cell series redefines performance standards through the use of advanced half-cut cell technology. The use of **half-cut** cells allows for a significant reduction in energy losses resulting from internal resistance, which directly translates into higher yields from the installation even in less favorable weather conditions. These panels deal perfectly with the common problem of partial shading. Thanks to the physical division of the module into two independent sections, shading one part does not completely block energy production, which is crucial on roofs with complex geometry or near tall obstacles. Additionally, **multi-busbar (MBB)** technology effectively shortens the electron flow path, which not only increases efficiency but also minimizes the risk of micro-cracks in the silicon structure. This product stands out from the competition with its **low temperature coefficient**, which ensures that the modules maintain high efficiency even during extreme summer heat. This solution is dedicated to investors seeking high mechanical durability and financial stability for their project. The use of **PERC technology** supports better absorption of diffused light, allowing the system to generate real profits from early morning until dusk, providing a fast return on investment in both the residential sector and demanding commercial installations. ## Notable figures - At 22.3% efficiency, this panel is on par with typical \*\*database\*\* modules - Temperature coefficient of -0.35%/°C is 0.05pp worse than \*\*database\*\* median (-0.30%/°C) - higher losses in summer heat - In the top 36% for efficiency among all N-type panels ## Questions ### How does the half-cut cell technology in the MY Solar Half Cell series handle partial roof shading? The module is physically divided into two independent electrical sections, so shading one half does not shut down energy production in the other. This is a key advantage on rooftops with chimneys, dormers, or nearby trees. In practice it delivers higher annual energy yield compared to conventional full-cell modules installed under the same shading conditions. ### What power warranty does the MY Solar Half Cell series carry and what does it cover? The manufacturer provides a 25-year linear power output warranty, guaranteeing that the panel maintains energy production in line with the declared degradation schedule throughout that period. This warranty secures the financial return of the investment and simplifies yield calculations. You should also verify the product warranty terms covering material defects in the documentation provided by your local distributor. ### Does the MY Solar Half Cell series perform well during summer heat? Yes. The series features a low temperature coefficient, allowing the panels to maintain high efficiency even during extreme heat. In typical monocrystalline modules, each degree Celsius above 25°C reduces output by roughly 0.3–0.4%. MY Solar Half Cell limits those losses, which is especially important for installations exposed to prolonged direct sunlight during summer months. ### What are the benefits of the multi-busbar (MBB) and PERC technologies used in MY Solar Half Cell panels? Multi-busbar technology shortens the electron travel path within each cell, increasing conversion efficiency and reducing the risk of microcracks during shipping and installation. PERC technology improves the absorption of diffuse light, so the module generates energy efficiently from early morning to dusk rather than only at peak irradiance. Together, both technologies deliver a higher annual energy yield from the same installation footprint. ### What is the maximum power output of the MY Solar Half Cell panel and is it suitable for commercial installations? The MY Solar Half Cell series reaches a peak output of up to 700 Wp, making it suitable for residential rooftop systems as well as demanding commercial projects. Higher per-module wattage means fewer panels are required to reach a target system size, which can reduce BoS costs including racking and wiring. Before purchasing, verify inverter compatibility regarding input voltage range and MPPT window. ### Is MY Solar a Tier 1 manufacturer and how does that affect financing options for installations using these panels? MY Solar is not currently listed as a Tier 1 manufacturer by independent financial agencies. Tier 1 status primarily relates to a manufacturer's ability to secure bankable financing for utility-scale PV projects and is not a direct indicator of technical panel quality. For residential and small commercial installations, the more relevant factors are technical specifications, warranty terms, and local distributor service availability. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/M12-Series-MY-M12-144-660W-Solar-Module-812889b6e238.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -50 W, cooler, +2.9 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, +2.9 pp, +5 yr warranty | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, +2.7 pp, +5 yr warranty | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, +2.7 pp, +5 yr warranty | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, +2.6 pp, +5 yr warranty | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, +2.5 pp, +5 yr warranty | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | Cooler, +2.5 pp, +5 yr warranty | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | Cooler, +2.5 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/my-solar-my-m12-144-700 Not in this file, on the page: a thirty-year output simulator.