--- title: "JA Solar NS-270MH-72 270W Solar Panel - Specs & Review | ComparePV" description: "JA Solar NS-270MH-72 270W solar panel. Specs: 20.99% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ja-solar-ns-270mh-72" updated: 2026-09-11 --- # JA Solar NS-270MH-72 Light for its output, no clear weak spot 1,154 panels in the 170-370 W band, all technologies ## Identity - **Manufacturer:** JA Solar - **Model:** NS-270MH-72 - **Series:** Monocrystalline72 - **Rated power:** 270 W - **Cell technology:** Monocrystalline ## How it compares Compared against 170-370 W band, all technologies (1154 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 270 W | 320 W | Weak - bottom 21% | | | Module efficiency | 20.99% | 18.09% | Strong - top 5% | 9,944 | | Power density | 209.9 | 180.4 | Strong - top 4% | 9,899 | | Temperature coefficient | -0.290 | -0.360 | Strong - top 11% | 2,165 | | Weight (kg) | 12.5 kg | 19.0 kg | Strong - top 2% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.99% | 18.09% | Strong - top 5% | 9,944 | | Power density | 209.9 | 180.4 | Strong - top 4% | 9,899 | | Temperature coefficient | -0.290 | -0.360 | Strong - top 11% | 2,165 | | Weight per kWp | 46.3 | 63.3 | Strong - top 2% | 1,110 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **46.3 kg per kWp** - Top 2% of the 170-370 W band, against a median of 63.3. Ranked 1,110th in the whole database. - **209.9 watts per square metre** - Top 4% of the 170-370 W band, against a median of 180.4. Ranked 9,899th in the whole database. - **20.99% module efficiency** - Top 5% of the 170-370 W band, against a median of 18.09%. Ranked 9,944th in the whole database. - **Best for:** Commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 270 W - **Efficiency:** 20.99 % - **Voltage at Pmax (Vmp):** 18.82 V - **Current at Pmax (Imp):** 14.35 A - **Open-circuit voltage (Voc):** 22.78 V - **Short-circuit current (Isc):** 15.19 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 - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 72 ### Physical - **Length:** 1715 mm - **Width:** 750 mm - **Thickness:** 30 mm - **Weight:** 12.5 kg - **Area:** 1.29 m2 - **Power density:** 209.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9944 of 14005 | | Power density | 9899 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 1110 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Efficiency dominance in segment** - Module efficiency of 20.21–23.32% positions the series well above all peer comparables: Runtech RT Compact Mono (18.44%), AE Solar Terra E CMD-72BD (15.39%), and DMEGC Greenhouse (11.61%). The advantage over the nearest competitor exceeds 1.8 percentage points, which at a 100 kWp installation translates to a meaningfully smaller roof or ground area required for the same nameplate power. - **BNEF Tier-1 – bankable status** - JA Solar has maintained continuous BNEF Tier-1 status, holds over 100 GW/year of manufacturing capacity (Q1 2026 data), and exports approximately 48% of volume to international markets. Bankable status allows project financing by lending institutions without additional manufacturer audits, lowering the cost of capital for C&I investors and PV farm developers. - **PERC half-cut MBB – shading resilience** - The half-cut architecture halves cell operating current, reducing resistive losses and hot-spot risk under partial shading. Multi-busbar (MBB) design shortens the carrier transport path, stabilizing performance below STC irradiance levels and directly improving annual energy yield on rooftops with obstructions. - **25-year power warranty – long investment horizon** - The manufacturer guarantees a defined power retention threshold for 25 years, covering the full financing cycle of most bankable European PV projects (typical debt tenor: 20–25 years). The 15-year product warranty exceeds the 12-year standard offered by many earlier-generation JA Solar series. ## Cons - **PERC (P-type) vs. dominant TOPCon** - P-type PERC technology exhibits LID of 1.8–2.6% in the first 200–500 operating hours and annual linear degradation of 0.6–0.8%/year, compared to below 0.5% LID and 0.4–0.5%/year for N-type TOPCon modules. A 2025 Iberdrola study across 1.2 GW of operating PERC plants in Spain recorded average Year-1 losses of 2.4% versus a TOPCon counterfactual. Over a 25-year horizon this compounds to several percentage points of cumulative energy yield difference. - **Low module power (max 300 Wp)** - Contemporary C&I and utility-scale projects in Europe standardly use 450–700 Wp modules, meaning this series requires 50–130% more panels to achieve the same system nameplate power. This directly raises BoS costs: more racking, more DC cabling, and more MPPT inputs on the inverter. The Monocrystalline72 series is structurally misaligned with new utility-scale and large industrial rooftop projects in this respect. ## About this series The JA Solar Monocrystalline 72 series comprises large-format modules designed for installations where maximizing power output from each section of the roof or ground is crucial. The use of **PERC monocrystalline cells** ensures high efficiency in real-world conditions, while the **half-cut** design helps minimize losses and improves performance under partial shading, which is often a key factor in installations with obstructions like roof structures. Another key feature is the **multi-busbar architecture**, which supports more stable current transport and better performance under weaker sunlight. In practice, this series addresses common issues faced by C&I investors: it reduces the risk of localized overheating and enhances resistance to mechanical loads, which is particularly important for installations exposed to wind and snow. Monocrystalline 72 is suitable for both PV farms and rooftop installations on warehouses, factories, and other buildings, where **lower operating losses** and predictable performance over many years are the priority. With its carefully designed mounting details and robust IP68 junction box, this series is not just a catalog option, but a practical and reliable choice. ## Notable figures - Module efficiency of 21.0% is 0.8pp below average for \*\*database\*\* panels (median: 21.8%) - At 209.9 W/m², this panel generates 8.2 W/m² less per unit area than \*\*database\*\* median (218.1 W/m²) - Temperature coefficient of -0.29%/°C matches the \*\*database\*\* median - At 12.5 kg, this panel is 14.0 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - In the top 71% for efficiency among all N-type panels ## Questions ### What warranty does the JA Solar Monocrystalline72 series come with? The JA Solar Monocrystalline72 series includes a 15-year product warranty covering material and manufacturing defects, plus a 25-year linear power output warranty guaranteeing the panels retain a specified percentage of their rated power over that period. JA Solar is a recognized Tier 1 manufacturer, which means the warranty is backed by a financially stable company with a proven global track record. ### How does the Monocrystalline72 series handle partial shading on a warehouse or industrial rooftop? The half-cut cell design splits each cell in two so both halves operate independently. Shading one section of the module does not shut down the rest. The multi-busbar architecture further reduces losses under diffuse or low-angle light. This makes the Monocrystalline72 a practical choice for commercial rooftops where vents, skylights, or HVAC units frequently cast shadows over part of the array. ### What is multi-busbar technology in the Monocrystalline72 and does it make a real difference? Multi-busbar (MBB) replaces a few wide busbars with many thin conductive ribbons distributed across each PERC cell. In the Monocrystalline72 series this shortens the current path, lowers resistive losses, and improves low-light performance on overcast days. It also increases resistance to cell microcracks, slowing long-term power degradation and improving the overall LCOE of the installation. ### What types of installations is the JA Solar Monocrystalline72 best suited for, and is it a good fit for utility-scale PV farms? The Monocrystalline72 series is designed for C&I and utility-scale applications: ground-mounted PV farms, manufacturing plant rooftops, warehouses, and logistics centers. The large module format reduces panel count per installed kilowatt, cutting BoS and labor costs. It is the right choice wherever maximum energy yield per square meter and predictable long-term performance are the primary requirements. ### Are JA Solar Monocrystalline72 panels rated for heavy snow loads and high winds? Yes. The Monocrystalline72 series is engineered for elevated mechanical load resistance, making it suitable for sites exposed to significant snowfall or high wind speeds. The IP68-rated junction box seals critical electrical connections against moisture and dust ingress, ensuring reliable operation throughout the full service life even in harsh outdoor environments. ### What is the maximum output of the JA Solar Monocrystalline72 and how does it affect how many panels I need? Panels in the JA Solar Monocrystalline72 series are rated up to 300 Wp. The combination of monocrystalline PERC cells and the half-cut configuration means real-world energy harvest exceeds what the nameplate rating alone implies, particularly under partial cloud cover. In practice this reduces the total number of modules required to reach a target system capacity compared to older, lower-efficiency technologies. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ns-260-300mh-72-1715-750-30-b0e55cf8e19d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | +30 W, +2.3 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | +30 W, +2.3 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | Cooler, +2.3 pp, +5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | Lighter, +2.0 pp, +5 yr warranty | | [Gamko New Energy GKA182M240W](https://comparepv.com/panel/gamko-new-energy-gka182m240w) | 240 W | -30 W, +2.0 pp, +5 yr warranty | | [Gamko New Energy GKA182M260W](https://comparepv.com/panel/gamko-new-energy-gka182m260w) | 260 W | Lighter, +2.0 pp, +5 yr warranty | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | Lighter, +2.0 pp, +5 yr warranty | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | Heavier, +2.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | +50 W, +2.0 pp, +5 yr warranty | | [JA Solar NS-260MH-72](https://comparepv.com/panel/ja-solar-ns-260mh-72) | 260 W | -10 W, -0.8 pp | | [JA Solar NS-280MH-72](https://comparepv.com/panel/ja-solar-ns-280mh-72) | 280 W | +10 W, +0.8 pp | | [JA Solar NS-290MH-72](https://comparepv.com/panel/ja-solar-ns-290mh-72) | 290 W | +20 W, +1.6 pp | | [PolyCrown Solar Tech NS-290MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-290mh-72) | 290 W | +20 W, +1.6 pp | | [PolyCrown Solar Tech NS-280MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-280mh-72) | 280 W | +10 W, +0.8 pp | | [Techwise Solar TW-280MM-1](https://comparepv.com/panel/techwise-solar-tw-280mm-1) | 280 W | +10 W, hotter, -5 yr warranty | | [PolyCrown Solar Tech NS-270MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-270mh-72) | 270 W | Very close match | --- Source: https://comparepv.com/panel/ja-solar-ns-270mh-72 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.