--- title: "Talesun TM8G60M/620W 620W Solar Panel - Specs & Review | ComparePV" description: "Talesun TM8G60M/620W 620W solar panel. Specs: 21.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/talesun-tm8g60m-620w" updated: 2026-09-11 --- # Talesun TM8G60M/620W Middle of its segment, heavy for its output 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Talesun - **Model:** TM8G60M/620W - **Series:** BIPRO TM8G60M (120-cell) - **Rated power:** 620 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 620 W | 620 W | Typical | | | Module efficiency | 21.90% | 22.80% | Weak - bottom 5% | 6,783 | | Power density | 219.1 | 227.7 | Weak - bottom 5% | 6,743 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 34.9 kg | 32.7 kg | Weak - bottom 5% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.90% | 22.80% | Weak - bottom 5% | 6,783 | | Power density | 219.1 | 227.7 | Weak - bottom 5% | 6,743 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 56.3 | 53.1 | Weak - bottom 5% | 10,554 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **56.3 kg per kWp** - Bottom 5% of the TOPCon 600-650 W segment, against a median of 53.1. Ranked 10,554th in the whole database. - **219.1 watts per square metre** - Bottom 5% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 6,743rd in the whole database. - **21.90% module efficiency** - Bottom 5% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 6,783rd in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. - **Not ideal for:** Weight-limited structures, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 620 W - **Efficiency:** 21.90 % - **Voltage at Pmax (Vmp):** 36.20 V - **Current at Pmax (Imp):** 17.13 A - **Open-circuit voltage (Voc):** 43.20 V - **Short-circuit current (Isc):** 18.18 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.043 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes ### Physical - **Length:** 2172 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 34.9 kg - **Area:** 2.83 m2 - **Power density:** 219.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 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:** 542 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6783 of 14005 | | Power density | 6743 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 10554 of 14005 | | Warranty | 21 of 14005 | ## About this series The Talesun BIPRO™ TM8G60M (120-cell) is a glass-to-glass bifacial module engineered for maximum yield from every square meter of installation. The use of **N-type TOPCon cells** and **bifacial construction** effectively utilizes reflected light from the ground - particularly effective on light-colored roofs, membranes, and ground-mounted installations. Thanks to the **half-cut technology with a dense busbar layout**, the modules perform better under partial shading and in low-light conditions, facilitating design in challenging locations. Amidst many competitive panels, this product stands out due to its focus on long-term reliability - limiting LID and LeTID degradation and featuring **enhanced resistance to PID** - ensuring predictable energy production for years to come. This makes it an excellent choice for utility-scale PV farms, large commercial rooftops, and investors focused on long-term energy cost savings, not just peak power output. ## Notable figures - Module efficiency of 21.9% is 0.9pp below average for \*\*TOPCon 600-650W\*\* panels (median: 22.8%) - At 219.1 W/m², this panel generates 8.6 W/m² less per unit area than \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 600-650W\*\* median - At 34.9 kg (2.2 kg above \*\*TOPCon 600-650W\*\* median of 32.7 kg), requires checking roof load capacity - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What is the maximum power output of the Talesun BIPRO TM8G60M (120-cell) panels? The BIPRO TM8G60M series reaches up to 640 Wp maximum power output, with module efficiency of around 22.6%. This is achieved through 120 N-type TOPCon cells in a half-cut configuration with a dense busbar layout, which reduces current losses and improves energy yield per square meter compared to older PERC modules of similar dimensions. ### How does the TOPCon technology in this series differ from standard PERC panels? N-type TOPCon cells have a lower first-year degradation rate and slower power loss over subsequent years than conventional P-type PERC cells. They also handle high temperatures better and are less prone to LID and LeTID degradation, so the BIPRO TM8G60M module maintains higher energy production over the long term, especially in hot summer climates. ### Are BIPRO TM8G60M panels suitable for ground-mount installations or flat roofs with a light-colored surface? Yes, this is one of the main use cases for the series. Thanks to the bifacial glass-glass construction, the panel captures light reflected off the ground from its rear side, boosting total energy yield. The effect is strongest over light surfaces - white gravel, roofing membranes, or snow-covered ground - making it well suited to PV farms and large commercial rooftops. ### What warranty does the Talesun BIPRO TM8G60M series come with, and what does it cover? The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 30-year power output warranty. This means guaranteed, gradually declining energy production over three decades - a longer period than the standard 25-year power warranties typically offered on older-generation PERC panels. ### Do BIPRO TM8G60M modules perform well under partial shading, such as from a chimney or tree? Yes, the half-cut cell design with a dense busbar layout splits cells into smaller segments, so shading part of the panel reduces overall module output less than it would with traditional full-cell panels. This makes it easier to design installations on sites with partial shade, though fully avoiding obstructions is still recommended for maximum yield. ### Is Talesun a reliable manufacturer, and is the BIPRO TM8G60M series worth investing in? Talesun is a Chinese manufacturer classified as Tier 1 by Bloomberg NEF, reflecting financial stability and long-standing experience in large-scale PV module production. The BIPRO TM8G60M series has not been discontinued and is currently actively offered, providing assurance of continued warranty support and spare parts availability going forward. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/bipro-tm8g60m-18bb-20240322-en-c6345500c401.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +30 W, lighter, +3.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +3.1 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +50 W, lighter, +2.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +50 W, lighter, +2.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +2.9 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +50 W, cooler, +2.9 pp | | [Talesun TP8F60M-585W](https://comparepv.com/panel/talesun-tp8f60m-585w) | 585 W | Hotter, -1.2 pp, -5 yr warranty | | [Talesun TP8F60M-590W](https://comparepv.com/panel/talesun-tp8f60m-590w) | 590 W | Hotter, -1.1 pp, -5 yr warranty | | [Talesun TP8F60M-595W](https://comparepv.com/panel/talesun-tp8f60m-595w) | 595 W | Hotter, -0.9 pp, -5 yr warranty | | [Talesun TP8F60M-600W](https://comparepv.com/panel/talesun-tp8f60m-600w) | 600 W | Hotter, -0.7 pp, -5 yr warranty | | [Talesun TP8F60M-605W](https://comparepv.com/panel/talesun-tp8f60m-605w) | 605 W | Hotter, lighter, -5 yr warranty | | [Gamko New Energy GKA210N120](https://comparepv.com/panel/gamko-new-energy-gka210n120) | 680 W | +60 W, lighter, +2.1 pp | | [Gamko New Energy GKA210N120-675](https://comparepv.com/panel/gamko-new-energy-gka210n120-675) | 675 W | +55 W, lighter, +2.0 pp | | [Q-SUN Solar QN-670HJT-01](https://comparepv.com/panel/q-sun-solar-qn-670hjt-01) | 670 W | +50 W, cooler, +1.8 pp | | [Gamko New Energy GKA210N120-670](https://comparepv.com/panel/gamko-new-energy-gka210n120-670) | 670 W | Hotter, lighter, +1.8 pp | | [Q-SUN Solar QN-665HJT-01](https://comparepv.com/panel/q-sun-solar-qn-665hjt-01) | 665 W | +45 W, cooler, +1.6 pp | --- Source: https://comparepv.com/panel/talesun-tm8g60m-620w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.