--- title: "Jinko Solar JSHC166M120-350W Solar Panel: Specs & Datasheet | ComparePV" description: "Jinko Solar JSHC166M120-350W solar panel. Specs: 18.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jinko-solar-jshc166m120-350w" image: "https://comparepv.com/og/panel/jinko-solar-jshc166m120-350w.png" updated: 2026-09-11 --- # Jinko Solar JSHC166M120-350W Middle of its segment, heavy for its output 4,586 panels in the 250-450 W band, all technologies ## Identity - **Manufacturer:** Jinko Solar - **Model:** JSHC166M120-350W - **Series:** JSHC166M120 - **Rated power:** 350 W - **Cell technology:** Monocrystalline ## How it compares Compared against 250-450 W band, all technologies (4586 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 350 W | 410 W | Weak - bottom 16% | | | Module efficiency | 18.90% | 20.70% | Weak - bottom 15% | 13,088 | | Power density | 192.2 | 207.4 | Weak - bottom 18% | 12,920 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,846 | | Weight (kg) | 34.0 kg | 21.5 kg | Weak - bottom 1% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 18.90% | 20.70% | Weak - bottom 15% | 13,088 | | Power density | 192.2 | 207.4 | Weak - bottom 18% | 12,920 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,846 | | Weight per kWp | 97.1 | 54.4 | Weak - bottom 1% | 14,026 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,912 | ### Watch out for - **97.1 kg per kWp** - Bottom 1% of the 250-450 W band, against a median of 54.4. Ranked 14,026th in the whole database. - **18.90% module efficiency** - Bottom 15% of the 250-450 W band, against a median of 20.70%. - **192.2 watts per square metre** - Bottom 18% of the 250-450 W band, against a median of 207.4. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 350 W - **Efficiency:** 18.90 % - **Voltage at Pmax (Vmp):** 30.61 V - **Current at Pmax (Imp):** 12.74 A - **Open-circuit voltage (Voc):** 36.54 V - **Short-circuit current (Isc):** 13.51 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:** 1754 mm - **Width:** 1038 mm - **Thickness:** 35 mm - **Weight:** 34.0 kg - **Area:** 1.82 m2 - **Power density:** 192.2 Wp/m2 ### Warranty and degradation - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Output after 30 years:** 287 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13088 of 14129 | | Power density | 12920 of 14129 | | Temperature coefficient | 8846 of 14129 | | Weight | 14026 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Up to 21.3% efficiency - segment leader** - The top-tier variant reaches 21.3% conversion efficiency, outperforming direct peer comparables: Boviet Solar VEGA (max 20.0%) and ENCOR EC (max 20.59%). On roof areas with limited space, this translates to a measurably higher annual energy yield without increasing the module count. - **Half-cut cells + multi-busbar (MBB)** - Half-cut cell design reduces resistive losses to ¼ of those in full-cell modules, while the dense MBB layout shortens current conduction paths by over 50%. In practice, this improves performance under partial shading (chimneys, dormers) - a significant factor in typical Central European residential rooftop conditions. - **Certified PID resistance** - The series meets IEC 61215 and IEC 61730 requirements for potential-induced degradation resistance. PID is a key risk factor in systems with ungrounded DC strings or long cable runs - a common configuration in Polish prosumer microinstallations. - **Jinko Solar - BNEF #1 bankability** - The manufacturer holds the top position in the Bloomberg NEF bankability ranking (2025 report: sole manufacturer rated bankable by 100% of surveyed respondents) and leads global module shipments at 86.8 GW in 2025. Tier-1 status materially reduces investment risk and facilitates project financing. - **25-year linear power warranty** - Jinko Solar guarantees linear power degradation over 25 years, in line with the segment standard. Combined with Jinko's Tier-1 financial standing, the risk of warranty non-enforcement is significantly lower than with Tier-2 or Tier-3 manufacturers. ## Cons - **P-type PERC, not N-type technology** - P-type PERC cells exhibit higher light-induced degradation (LID) and a worse temperature coefficient than modern TOPCon or HJT architectures. As of 2026, the premium segment is dominated by N-type modules - choosing this series means accepting a higher annual degradation rate (approx. 0.55% vs. approx. 0.40% for TOPCon). - **2020 design - M6 (166 mm) wafer format** - The series is built on M6 (166 mm) wafers, while the industry shifted to M10 (182 mm) and G12 (210 mm) between 2022 and 2026, delivering lower cost-per-Wp and better BoS economics (fewer modules for the same system power). The absence of an updated SMBB architecture may limit pricing competitiveness and availability in new tender processes. - **No bifacial variant available** - The series is monofacial only (is\_bifacial: false). On commercial flat rooftops or ground-mount systems, bifacial PERC or TOPCon modules typically generate 5-15% additional yield from reflected albedo. Selecting this series forecloses that yield improvement without switching products. - **Wide intra-series efficiency spread (18.9-21.3%)** - Across 6 variants, the efficiency spread reaches 2.4 percentage points. Lower-power variants (350 Wp, approx. 18.9%) fall well short of same-segment competitors - ENCOR EC achieves 20.59% at its 375 Wp maximum. Buyers should verify which specific variant is actually delivered, as the stated series range can obscure significant performance differences. ## About this series The Jinko Solar JSHC166M120 series is designed for high power output without increasing the risk of failures during daily operation. The use of **half-cut technology** reduces energy losses in the module and improves performance under partial shading, which, in Polish conditions (chimneys, trees, skylights), translates into more stable yields. The design based on **multi-busbar technology** supports better current collection and performance in low-light conditions, while the **dense interconnection grid** enhances efficiency without the need to "inflate" parameters on paper. Compared to many competing panels, this series stands out due to its focus on durability: the manufacturer emphasizes **minimizing microcracks** through precise cutting, as well as **PID resistance**, which refers to power drops caused by potential differences in the installation. This is a good choice for single-family homes, commercial rooftops, and micro-installations, where reliability, predictable yields, and a quick return on investment are important. ## Notable figures - At 18.9% efficiency, this panel is 2.9pp below the \*\*database\*\* median of 21.8% - 192.2 W/m² power density is 25.9 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - Temperature coefficient of -0.34%/°C is 0.04pp worse than \*\*database\*\* median (-0.30%/°C) - higher losses in summer heat - At 34.0 kg, this panel is 7.5 kg heavier than the \*\*database\*\* median (26.5 kg) - more demanding for installation crews - #13088 for efficiency, #8846 for temperature performance out of 14129 panels ## Questions ### How does the half-cut cell technology in the Jinko Solar JSHC166M120 series help with partial shading from a chimney or dormer? Half-cut cells split each cell into two independent electrical halves, so shading on one part of the module limits power loss to that section only, rather than reducing the output of the entire panel. In residential installations where chimneys, dormers, or nearby trees frequently shade part of the roof, the JSHC166M120 series delivers noticeably more stable annual energy yield compared to conventional full-cell modules. ### What is the power output warranty on Jinko Solar JSHC166M120 panels? Jinko Solar provides a 25-year linear power output warranty for the JSHC166M120 series. This guarantees that after 25 years of operation the module will retain at least 80.7% of its rated 375 Wp output. In addition, a 12-year product warranty covering material and workmanship defects is included as standard across Jinko Solar's module lineup. ### Is the JSHC166M120 series resistant to PID (Potential Induced Degradation)? Yes, Jinko Solar builds PID resistance into this series. This is especially important in systems using transformerless inverters, where potential differences between the module frame and cells can gradually reduce output power over time. PID resistance ensures more predictable energy yields throughout the full 25-year operational lifespan of the installation. ### Is the Jinko Solar JSHC166M120 375 Wp a bifacial module? No, the JSHC166M120 is a monofacial module - energy is harvested exclusively from the front active surface. For typical pitched-roof or slightly tilted flat-roof residential installations this is fully sufficient. Bifacial modules offer a meaningful advantage mainly when mounted above highly reflective surfaces such as gravel or white TPO membranes on flat roofs. ### Do JSHC166M120 panels perform well in winter and on overcast days? Yes. The combination of multi-busbar cell interconnection and half-cut cell architecture improves current collection under low-irradiance conditions typical of northern European winters and overcast skies. Monocrystalline PERC cells also exhibit a better temperature coefficient than older polycrystalline technology, meaning lower power losses on hot summer days, while cooler winter temperatures actually benefit instantaneous output. ### Is Jinko Solar a reliable manufacturer, and what does Tier 1 status mean for me as a buyer? Jinko Solar is one of the world's largest PV module manufacturers and has maintained Bloomberg NEF Tier 1 status for many consecutive years. Tier 1 classification indicates that the manufacturer is bankable - financed by reputable institutions and financially stable - which significantly reduces the risk of the company disappearing from the market before the 25-year power warranty expires. For a residential prosumer, this is one of the most important factors when selecting modules. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/8710d08c0a803a6cee2fb814e4d94c94-d4c06e5b5157.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Cooler, 22 kg lighter, +4.4 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, 22 kg lighter, +4.4 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, 19 kg lighter, +4.2 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, 19 kg lighter, +4.2 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -50 W, 18 kg lighter, +4.1 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | 18 kg lighter, +4.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | 18 kg lighter, +4.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | 18 kg lighter, +4.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | 17 kg lighter, +4.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +50 W, 16 kg lighter, +4.1 pp | | [Jinko Solar JSHC166M120-355W](https://comparepv.com/panel/jinko-solar-jshc166m120-355w) | 355 W | +1.3 pp | | [Jinko Solar JSHC166M120-360W](https://comparepv.com/panel/jinko-solar-jshc166m120-360w) | 360 W | +10 W, +1.6 pp | | [Jinko Solar JSHC166M120-365W](https://comparepv.com/panel/jinko-solar-jshc166m120-365w) | 365 W | +15 W, +1.8 pp | | [Jinko Solar JSHC166M120-370W](https://comparepv.com/panel/jinko-solar-jshc166m120-370w) | 370 W | +20 W, +2.1 pp | | [Jinko Solar JSHC166M120-375W](https://comparepv.com/panel/jinko-solar-jshc166m120-375w) | 375 W | +25 W, +2.4 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +160 W, lighter, +6.1 pp | --- Source: https://comparepv.com/panel/jinko-solar-jshc166m120-350w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.