--- title: "JS Solar JS210MHC120-600 600W Solar Panel - Specs & Review | ComparePV" description: "JS Solar JS210MHC120-600 600W solar panel. Specs: 21.20% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/js-solar-js210mhc120-600" updated: 2026-09-11 --- # JS Solar JS210MHC120-600 Middle of its segment, short guarantee 6,168 panels in the 500-700 W band, all technologies ## Identity - **Manufacturer:** JS Solar - **Model:** JS210MHC120-600 - **Series:** JS210MHC120 - **Rated power:** 600 W - **Cell technology:** Monocrystalline ## How it compares Compared against 500-700 W band, all technologies (6168 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 600 W | 590 W | Typical | | | Module efficiency | 21.20% | 22.25% | Weak - bottom 21% | 9,076 | | Power density | 212.0 | 222.5 | Weak - bottom 21% | 9,096 | | Temperature coefficient | -0.340 | -0.300 | Typical | 8,778 | | Weight (kg) | 30.6 kg | 31.5 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.20% | 22.25% | Weak - bottom 21% | 9,076 | | Power density | 212.0 | 222.5 | Weak - bottom 21% | 9,096 | | Temperature coefficient | -0.340 | -0.300 | Typical | 8,778 | | Weight per kWp | 51.0 | 52.8 | Typical | 4,354 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Watch out for - **25 year performance warranty** - Bottom 11% of the 500-700 W band, against a median of 30 yrs. - **212.0 watts per square metre** - Bottom 21% of the 500-700 W band, against a median of 222.5. - **21.20% module efficiency** - Bottom 21% of the 500-700 W band, against a median of 22.25%. - **Not ideal for:** Owners who want a long output guarantee, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 600 W - **Efficiency:** 21.20 % - **Voltage at Pmax (Vmp):** 34.30 V - **Current at Pmax (Imp):** 17.49 A - **Open-circuit voltage (Voc):** 41.50 V - **Short-circuit current (Isc):** 18.52 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 120 ### Physical - **Length:** 2172 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 30.6 kg - **Area:** 2.83 m2 - **Power density:** 212.0 Wp/m2 ### Warranty and degradation - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 492 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9076 of 14005 | | Power density | 9096 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 4354 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **G12 + Half-Cut + Multi-Busbar Stack** - The combination of 210 mm G12 wafers, half-cut cell architecture, and multi-busbar (MBB) layout reduces resistive losses, limits microcrack propagation, and improves yield under partial shading — three complementary technologies integrated in a single module. - **Efficiency at Peer Segment Ceiling** - The 20.7–21.4% efficiency range matches direct peer comparables — LEDVANCE M585~605P60UB-SF-F3 (21.37%) and Hiwatt Solar HW-M12/120H (21.4%) — placing the series at the top of the monofacial 600 W+ segment. The series is not outpaced by market alternatives within the same technology class. - **Wide Power Selection — 5 Variants** - A 585–605 Wp spread across five power steps allows precise module selection for a given inverter layout, reducing mismatch losses and directly lowering BoS costs while optimizing MPPT operating points. - **25-Year Linear Power Warranty** - The manufacturer provides a 25-year linear performance warranty, meeting the minimum threshold required by most project-finance institutions. Combined with IEC 61215, IEC 61730, and PID-resistance certifications, the series satisfies baseline technical due diligence requirements for commercial PV projects. ## Cons - **Not on BNEF Tier-1 List** - JS Solar does not appear on the BNEF bankable module manufacturer list (Q1 2026). For utility-scale PV projects financed on a non-recourse basis (typically >1 MWp), lenders routinely require Tier-1 status or additional manufacturer financial guarantees, which may complicate or delay project financing. - **PERC Technology vs. N-Type TOPCon Peer** - The series uses monocrystalline PERC cells (max. 21.4% efficiency). Direct peer comparable GCL SIROT NT10/72GDF achieves 23.42% via N-type TOPCon — a 2-percentage-point module efficiency gap translating to approximately 9–10% lower kWh/kWp yield on an equivalent footprint, which at commercial scale results in a materially higher LCOE vs. the top competitor. - **Monofacial Only — No Bifacial Option** - The series lacks a bifacial variant, while peer comparable GCL SIROT NT10/72GDF offers a double-glass bifacial configuration. In ground-mounted installations over high-albedo surfaces (gravel, concrete, snow), bifacial modules typically deliver +5–15% additional rear-side yield with no increase in land footprint. ## About this series JS Solar JS210MHC120 photovoltaic panels represent a breakthrough in energy efficiency thanks to the use of **large-format 210 mm silicon cells**. The use of G12 technology combined with half-cut cell architecture allows for a significant reduction in internal losses and optimization of performance in partial shading conditions. This series stands out with an **innovative Multi-busbar structure**, which shortens the current flow path, directly translating to lower module degradation and higher resistance to micro-cracks. For investors, a key advantage is the **exceptional power density**, which enables higher yields from a smaller mounting surface, particularly important in commercial projects and PV farms. JS Solar JS210MHC120 solves the problem of performance drop at high temperatures thanks to its low temperature coefficient, guaranteeing stable operation throughout the year. This solution is dedicated to professionals looking to **maximize LCOE return on investment** by lowering system and installation costs. What sets them apart from the competition is the precise selection of materials ensuring high mechanical strength while maintaining excellent aesthetics, making them a reliable choice for modern solar energy in Poland. ## Notable figures - Module efficiency of 21.2% is 0.6pp below average for \*\*database\*\* panels (median: 21.8%) - Power density of 212.0 W/m² is 6.1 W/m² below \*\*database\*\* median (218.1 W/m²) - needs more roof space - -0.34%/°C temperature coefficient - 0.04pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - Weight of 30.6 kg is 4.1 kg above \*\*database\*\* median (26.5 kg) - verify structural support - #9076 for efficiency, #8778 for temperature performance out of 14005 panels ## Questions ### What cell technology do JS Solar JS210MHC120 panels use? The JS210MHC120 series uses large-format G12 monocrystalline silicon cells measuring 210 mm, arranged in a half-cut configuration — 120 cells per module. The multi-busbar structure shortens current flow paths, reducing resistive losses and the risk of micro-cracking. The result is a peak output of up to 605 Wp combined with improved mechanical durability compared to conventional full-cell modules. ### What does the JS Solar JS210MHC120 power warranty cover and for how long? The manufacturer provides a 25-year linear power output warranty on the JS210MHC120 series, guaranteeing the panel retains a specified percentage of its rated 605 Wp over that period. A separate product warranty covering manufacturing defects and material faults is typically 10 to 12 years. Always confirm the exact warranty terms and the availability of local warranty service with your distributor before purchasing. ### How do JS Solar JS210MHC120 panels perform under partial shading from a chimney or antenna? Very well. The half-cut cell technology and multi-busbar architecture significantly reduce power losses under partial shading. Splitting each cell in half means a shaded section of the module does not fully block the unshaded half, limiting output drops across the entire string. The JS210MHC120 outperforms conventional full-cell modules on rooftops with chimneys, skylights, or nearby obstructions. ### Is the JS Solar JS210MHC120 series suitable for large commercial installations and utility-scale PV farms? Yes. The JS210MHC120 series is designed primarily for commercial projects and utility-scale PV farms. Its high unit output of up to 605 Wp and exceptional power density deliver greater energy yield from a smaller footprint. Fewer modules for the same installed capacity translates into lower balance-of-system (BoS) costs and faster installation time, directly reducing the project's LCOE. ### Is JS Solar a Tier 1 manufacturer, and is investing in the JS210MHC120 a safe choice? JS Solar is not listed as a Tier 1 manufacturer under BloombergNEF's classification, which means it has less market recognition than industry leaders. The panels may still offer solid build quality at a more competitive price point. Before purchasing, verify the availability of authorized warranty service in your country, check your distributor's track record, and assess the manufacturer's financial stability as part of your investment risk evaluation. ### Are JS Solar JS210MHC120 panels bifacial? No — the JS210MHC120 is a monofacial module that generates electricity only from the front side. It does not feature bifacial technology, which would allow additional energy harvest from light reflected off the ground or roofing surface. For ground-mounted systems on reflective substrates, bifacial modules from other series may offer an incremental yield advantage, though the JS210MHC120 still delivers high output thanks to G12 cells and the half-cut architecture. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/JS210MHC120-600W-538247c352b9.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +50 W, cooler, +4.0 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, +3.8 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.6 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, +3.6 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.4 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | Cooler, +3.4 pp, +5 yr warranty | | [JS Solar JS210MHC120-585](https://comparepv.com/panel/js-solar-js210mhc120-585) | 585 W | -15 W, -0.5 pp | | [JS Solar JS210MHC120-590](https://comparepv.com/panel/js-solar-js210mhc120-590) | 590 W | -10 W, -0.4 pp | | [JS Solar JS210MHC120-595](https://comparepv.com/panel/js-solar-js210mhc120-595) | 595 W | Very close match | | [JS Solar JS210MHC120-605](https://comparepv.com/panel/js-solar-js210mhc120-605) | 605 W | Very close match | | [Gamko New Energy GKA210N120](https://comparepv.com/panel/gamko-new-energy-gka210n120) | 680 W | +80 W, +2.8 pp, +5 yr warranty | | [Gamko New Energy GKA210N120-675](https://comparepv.com/panel/gamko-new-energy-gka210n120-675) | 675 W | +75 W, +2.7 pp, +5 yr warranty | | [Q-SUN Solar QN-670HJT-01](https://comparepv.com/panel/q-sun-solar-qn-670hjt-01) | 670 W | +70 W, cooler, +2.5 pp | | [Gamko New Energy GKA210N120-670](https://comparepv.com/panel/gamko-new-energy-gka210n120-670) | 670 W | +70 W, +2.5 pp, +5 yr warranty | | [Q-SUN Solar QN-665HJT-01](https://comparepv.com/panel/q-sun-solar-qn-665hjt-01) | 665 W | +65 W, cooler, +2.3 pp | | [Gamko New Energy GKA210N120-665](https://comparepv.com/panel/gamko-new-energy-gka210n120-665) | 665 W | +65 W, +2.3 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/js-solar-js210mhc120-600 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.