--- title: "Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) 620W Solar Panel - Specs & Review | ComparePV" description: "Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) 620W solar panel. Specs: 22.95% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/jinko-solar-co-ltd-jkm610-635n-66hl4m-v-620w-bin" updated: 2026-09-11 --- # Jinko Solar JKM610-635N-66HL4M-(V) (620W bin) Light for its output, no clear weak spot 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Jinko Solar - **Model:** JKM610-635N-66HL4M-(V) (620W bin) - **Series:** Tiger Neo 66HL4M-(V) - **Rated power:** 620 W - **Cell technology:** TOPCon ## 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 | 22.95% | 22.80% | Typical | 2,268 | | Power density | 229.5 | 227.7 | Typical | 2,191 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 28.2 kg | 32.7 kg | Strong - top 5% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.95% | 22.80% | Typical | 2,268 | | Power density | 229.5 | 227.7 | Typical | 2,191 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 45.5 | 53.1 | Strong - top 5% | 749 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **45.5 kg per kWp** - Top 5% of the TOPCon 600-650 W segment, against a median of 53.1. Ranked 749th in the whole database. - **Best for:** Commercial, utility-scale, shaded-installations and cold-climate. ## Specification ### Electrical - **Rated power (Pmax):** 620 W - **Efficiency:** 22.95 % - **Voltage at Pmax (Vmp):** 40.90 V - **Current at Pmax (Imp):** 15.16 A - **Open-circuit voltage (Voc):** 48.95 V - **Short-circuit current (Isc):** 16.15 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.2 kg - **Area:** 2.70 m2 - **Power density:** 229.5 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 | 2268 of 14005 | | Power density | 2191 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 749 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Efficiency up to 23.51% — segment leader** - The top variant reaches 23.51% module efficiency, matching the best peer comparable (Sunpro TOPCon 210R Bifacial: 23.51%) and nearly equal to the Longi Hi-MO X10 Explorer (23.5%). Even the low-end variant at 22.58% sits well above the typical median for commercial monofacial modules (~21.5–22.2% in 2023–2024). - **N-type TOPCon: lower degradation than PERC** - N-type cells are immune to LID (Light-Induced Degradation) common in PERC technology. TOPCon annual degradation is typically ≤0.40%/yr vs. 0.55–0.70%/yr for PERC — over a 30-year project horizon this translates to several additional MWh of cumulative yield per typical utility-scale array. - **30-year linear power warranty** - Jinko guarantees a linear power output for 30 years — consistent with peer Longi Hi-MO X10 (30 years) and above older PERC Tier-1 standards (typically 25 years). A 30-year power warranty directly supports bankable DSCR/project finance models for installations above 1 MWp. - **Jinko Solar Tier-1 / bankable since 2013** - Jinko Solar has been on the BNEF Tier-1 Bankable Manufacturers list continuously since 2013 — one of the longest track records in the industry. Bankable status is a formal prerequisite for project insurance and project-finance deals, differentiating this series from Tier-2/Tier-3 modules with comparable nameplate specs. - **6 power variants: precise string design flexibility** - The 610–635 Wp range across 6 variants lets engineers fine-tune string voltage to the inverter's MPPT window without compromise. This is especially valuable in utility-scale PV farms with central inverters, where deviations in Voc directly affect energy yield. ## Cons - **Monofacial — no bifacial energy gain** - All 3 peer comparables in this power class are bifacial modules (Sunpro TOPCon 210R Bifacial, Talesun TM7G78M BIPRO, Longi Hi-MO X10 HVD). In ground-mount installations, bifacial gain from albedo reflection typically adds 5–15% additional energy output. The monofacial 66HL4M-(V) forgoes this potential, worsening LCOE compared to bifacial peers at an equivalent price per Wp. - **12-year product warranty — below premium standard** - Premium N-type TOPCon modules (e.g., Longi Hi-MO X10, Canadian Solar HiKu7 N-type) have standardized on a 15-year workmanship warranty. The 66HL4M-(V) series' 12-year product warranty falls short of expectations for utility-scale PV projects with typical 20–25 year financing horizons and may be a sticking point during insurance underwriting. ## About this series The Jinko Solar Tiger Neo 66HL4M-(V) series modules are designed for maximum energy yield on large roof tilts and ground installations, where every square meter counts. At the core of the design are **N-type TOPCon cells**, which perform better under typical Polish conditions-cold weather, wind, and variable sunlight-and experience less performance degradation over time (crucial for long-term investments). The application of the **half-cut cell configuration** helps minimize internal losses and improves module performance under partial shading-such as from chimneys, trees, or infrastructure elements. Additionally, the **multi-busbar interconnection architecture** enhances resistance to micro-cracking and supports stable operation in real-world installation conditions. This is an excellent choice for companies, agricultural businesses, and PV farms seeking **high power density**, reliable energy returns, and long-term durability backed by a proven power warranty. ## Notable figures - At 22.9% efficiency, this panel is on par with typical \*\*TOPCon 600-650W\*\* modules - At 229.5 W/m² power density, roof space requirements are typical for \*\*TOPCon 600-650W\*\* panels - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 600-650W\*\* panels - At 28.2 kg, this panel is 4.5 kg lighter than \*\*TOPCon 600-650W\*\* median (32.7 kg) - easier handling during installation - In the top 16% for efficiency among all TOPCon panels ## Questions ### What warranty does the Jinko Solar Tiger Neo 66HL4M-(V) come with? The module carries a 12-year product warranty covering defects in materials and workmanship, plus a 30-year linear power warranty guaranteeing at least 87.4% of rated output after 30 years. This is among the most comprehensive power warranties available in the market and is a key factor when calculating the long-term ROI of a large commercial or utility-scale PV system. ### What is TOPCon technology and why does it matter in the Tiger Neo 66HL4M-(V)? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture that uses an ultra-thin tunnel oxide layer to minimize carrier recombination. This delivers higher module efficiency (up to 23.51% in this series), a low temperature coefficient of -0.29%/°C, and slower long-term degradation compared to PERC cells. For installations in temperate climates with cold winters and variable irradiance, these characteristics translate into better annual energy yield and more predictable long-term output. ### How heavy is the Jinko Solar Tiger Neo 66HL4M-(V) and can a standard roof support it? The module weighs approximately 28.2 kg and measures 2382×1134×35 mm. This large-format panel is designed primarily for ground-mounted systems and industrial or agricultural rooftops. For residential roofs or lighter structures, a structural assessment by a qualified engineer is required before installation, as the combined dead load of the array can be significant. ### Do the Tiger Neo 66HL4M-(V) panels perform well in cold or overcast conditions? Yes. The N-type TOPCon cells feature a low temperature coefficient of -0.29%/°C, meaning the module loses less power on hot days and performs relatively well in cold weather. The half-cut cell layout also reduces resistive losses and improves performance under partial shading or diffuse light conditions common in northern European climates. The module is certified for front-side static loads up to 5400 Pa, making it suitable for heavy snow regions. ### Is the Jinko Solar Tiger Neo 66HL4M-(V) a bifacial module? No. The 66HL4M-(V) is a monofacial module that generates power from the front surface only. If you are planning a ground-mounted system on a reflective surface such as sand, light gravel, or snow-covered ground and want to capture albedo gain, Jinko Solar offers the bifacial variant 66HL4M-BDV of the same generation. For most rooftop applications, the monofacial design is not a drawback. ### What types of PV installations is the Tiger Neo 66HL4M-(V) series best suited for? This series is optimized for large-scale applications: utility and commercial ground-mounted farms, industrial and agricultural rooftops, and any project where high power density and low Balance of System (BoS) cost per watt are priorities. At up to 635 Wp per module, fewer panels are needed to reach a given capacity, reducing racking, wiring, and MPPT input costs. For small residential systems below 10 kWp, a smaller 54- or 60-cell format is typically a better practical fit. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/116798767366b9b4fd00b72-d622f2f017b8.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +30 W, cooler, +2.2 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +25 W, cooler, +2.1 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +50 W, cooler, +1.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +50 W, cooler, +1.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +20 W, cooler, +1.9 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, heavier, +1.9 pp | | [Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (605W column)](https://comparepv.com/panel/jinko-solar-jkm605-630n-66hl4m-bdv-f3-en-605w-column) | 605 W | -15 W, heavier, -0.6 pp | | [Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (610W column)](https://comparepv.com/panel/jinko-solar-jkm605-630n-66hl4m-bdv-f3-en-610w-column) | 610 W | -10 W, heavier, -0.4 pp | | [Jinko Solar JKM605-630N-66HL4M-BDV-F3-EN (615W column)](https://comparepv.com/panel/jinko-solar-jkm605-630n-66hl4m-bdv-f3-en-615w-column) | 615 W | Heavier | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +60 W, cooler, +2.2 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +55 W, cooler, +2.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +80 W, heavier, +2.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +75 W, heavier, +1.9 pp | --- Source: https://comparepv.com/panel/jinko-solar-co-ltd-jkm610-635n-66hl4m-v-620w-bin Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.