--- title: "Twinsel Electronic Technology TSM144-9-555M 555W Solar Panel - Specs & Review | ComparePV" description: "Twinsel Electronic Technology TSM144-9-555M 555W solar panel. Specs: 21.50% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/twinsel-electronic-technology-tsm144-9-555m" updated: 2026-09-11 --- # Twinsel Electronic Technology TSM144-9-555M Efficiency leader, short guarantee 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Twinsel Electronic Technology - **Model:** TSM144-9-555M - **Series:** TSM144-9 - **Rated power:** 555 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 555 W | 560 W | Typical | | | Module efficiency | 21.50% | 21.29% | Strong - top 18% | 7,958 | | Power density | 214.8 | 212.9 | Typical | 8,148 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 27.8 kg | 30.8 kg | Strong - top 25% | | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.50% | 21.29% | Strong - top 18% | 7,958 | | Power density | 214.8 | 212.9 | Typical | 8,148 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 50.1 | 52.7 | Strong - top 25% | 3,595 | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Strengths - **21.50% module efficiency** - Top 18% of the PERC 550-600 W segment, against a median of 21.29%. - **50.1 kg per kWp** - Top 25% of the PERC 550-600 W segment, against a median of 52.7. ### Watch out for - **25 year performance warranty** - Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Residential, commercial and utility-scale. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 555 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 42.29 V - **Current at Pmax (Imp):** 13.13 A - **Open-circuit voltage (Voc):** 49.91 V - **Short-circuit current (Isc):** 14.01 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.275 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 27.8 kg - **Area:** 2.58 m2 - **Power density:** 214.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14005 | | Power density | 8148 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 3595 of 14005 | | Warranty | 9798 of 14005 | ## About this series The TSM144-9 series from Twinsel Electronic Technology is a range of modules designed for installations where maximizing energy production from a given roof or ground area is the priority. They are characterized by a unique **144-cell architecture**, which ensures stable operation of the entire system and allows for efficient utilization of modern inverters in residential and commercial installations. The use of **PERC monocrystalline technology** promotes high efficiency under typical Polish solar conditions, particularly with variable cloud cover and cooler temperatures. TSM144-9 addresses a common issue of limited mounting space - it helps to "extract" more energy from a single row of modules without requiring extensive structural modifications. For investors, **long-term predictability** is also important, thanks to clearly defined warranty terms and a linear power warranty. This is an ideal choice for installers and users seeking a **universal module for roofs and farms** that offers a good balance between energy yield and space utilization. ## Notable figures - At 21.5% efficiency, this panel is on par with typical \*\*PERC 550-600W\*\* modules - At 214.8 W/m² power density, roof space requirements are typical for \*\*PERC 550-600W\*\* panels - At -0.35%/°C, hot weather performance is typical for \*\*PERC 550-600W\*\* panels - 27.8 kg weight - 3.0 kg lighter than \*\*PERC 550-600W\*\* median (30.8 kg), reducing installation effort - Ranked #7958 out of 14005 panels for efficiency in the database ## Questions ### What warranty comes with Twinsel TSM144-9 solar panels? The TSM144-9 series comes with a 12-year product warranty and a 25-year linear power output warranty, meaning performance degrades gradually and predictably over time rather than dropping sharply after a few years. This gives investors a concrete basis for calculating long-term return on the installation, not just a marketing claim from the manufacturer. ### Are TSM144-9 panels suitable for a small residential roof? Yes, this is one of the series' key advantages. Thanks to the 144-cell layout and output up to 555 Wp per module, reaching a 6 kWp system typically requires only around 11 panels instead of 14-15 with older, less efficient models. This lets a larger installation fit on a limited sloped roof area. ### Do TSM144-9 modules perform well in cold temperatures and low light? Yes, the monocrystalline PERC technology used in TSM144-9 delivers good efficiency at lower temperatures and in diffuse light, conditions typical of winter and transitional seasons in Poland. Silicon panels generally lose less power in cold weather than in heat, so a cooler climate is not a drawback and actually supports stable operation. ### How does TSM144-9 differ from the manufacturer's bifacial modules? TSM144-9 is a monofacial module - only the front side generates energy. Unlike a bifacial version, it does not require elevated mounting or a light-reflective surface underneath, so it fits standard roof mounting systems and is simpler to install, though it doesn't capture the extra yield a bifacial panel gets from its rear side. ### Is Twinsel Electronic Technology a Tier 1 manufacturer, and is it trustworthy? Twinsel is not currently listed as a Tier 1 manufacturer, reflecting a smaller production scale and brand recognition compared to top-tier names like JinkoSolar or Trina. This doesn't automatically mean lower quality - it's worth checking the module's certifications (IEC, TUV) and the local distributor's warranty service terms before committing to a larger installation. ### How many TSM144-9 panels are needed for a typical 6 kWp system? At 555 Wp per module, reaching roughly 6 kWp requires 11 TSM144-9 panels (11 x 555 W gives about 6.1 kWp). This is a common configuration for a single-family home with moderate energy use, though the exact panel count also depends on available roof area and tilt angle. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/TSM144-9-535M-555M-892c0d816e88.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.3 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | -50 W, cooler, +3.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.1 pp, +5 yr warranty | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +2.9 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, +2.9 pp, +5 yr warranty | | [Twinsel Electronic Technology TSM144-9-535M](https://comparepv.com/panel/twinsel-electronic-technology-tsm144-9-535m) | 535 W | -20 W, -0.8 pp | | [Twinsel Electronic Technology TSM144-9-540M](https://comparepv.com/panel/twinsel-electronic-technology-tsm144-9-540m) | 540 W | -15 W, -0.6 pp | | [Twinsel Electronic Technology TSM144-9-545M](https://comparepv.com/panel/twinsel-electronic-technology-tsm144-9-545m) | 545 W | -10 W, -0.4 pp | | [Twinsel Electronic Technology TSM144-9-550M](https://comparepv.com/panel/twinsel-electronic-technology-tsm144-9-550m) | 550 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +85 W, cooler, +3.3 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +80 W, cooler, +3.1 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +75 W, cooler, +2.9 pp | --- Source: https://comparepv.com/panel/twinsel-electronic-technology-tsm144-9-555m Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.