--- title: "Phono Solar NS-320MH-60 320W Solar Panel - Specs & Review | ComparePV" description: "Phono Solar NS-320MH-60 320W solar panel. Specs: 19.66% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/phono-solar-ns-320mh-60" updated: 2026-09-11 --- # Phono Solar NS-320MH-60 Strong in heat, short guarantee 125 panels in the segment N-type 220-420 W ## Identity - **Manufacturer:** Phono Solar - **Model:** NS-320MH-60 - **Series:** Monocrystalline 60 - **Rated power:** 320 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 220-420 W (125 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 320 W | 380 W | Weak - bottom 4% | | | Module efficiency | 19.66% | 20.50% | Typical | 12,571 | | Power density | 196.7 | 204.8 | Typical | 12,528 | | Temperature coefficient | -0.290 | -0.310 | Strong - top 14% | 2,165 | | Weight (kg) | 17.0 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.66% | 20.50% | Typical | 12,571 | | Power density | 196.7 | 204.8 | Typical | 12,528 | | Temperature coefficient | -0.290 | -0.310 | Strong - top 14% | 2,165 | | Weight per kWp | 53.1 | 54.3 | Typical | 6,913 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Strengths - **-0.290 %/°C temperature coefficient** - Top 14% of the N-type 220-420 W segment, against a median of -0.310. ### Watch out for - **25 year performance warranty** - Bottom 23% of the N-type 220-420 W segment, against a median of 30 yrs. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 320 W - **Efficiency:** 19.66 % - **Voltage at Pmax (Vmp):** 32.21 V - **Current at Pmax (Imp):** 9.94 A - **Open-circuit voltage (Voc):** 37.83 V - **Short-circuit current (Isc):** 10.57 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 technology:** N-type - **Cell count:** 60 ### Physical - **Length:** 1640 mm - **Width:** 992 mm - **Thickness:** 30 mm - **Weight:** 17.0 kg - **Area:** 1.63 m2 - **Power density:** 196.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12571 of 14005 | | Power density | 12528 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 6913 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Up to 22.12% efficiency - segment leader** - The upper efficiency bound of 22.12% outperforms all listed peer comparables: Corab Encor EC360M-6-120FB (19.27%), Bisol Spectrum (18%), and Just Solar IBC Mono Module (21.3%). This represents a real advantage at the same 360 Wp maximum power, meaning less roof area is needed to reach the same system capacity. - **Tier-1 BNEF manufacturer since 2014** - Phono Solar has been continuously listed on the Bloomberg New Energy Finance Tier-1 list since 2014, confirming strong bankability required by banks and leasing companies financing PV installations. The manufacturer is backed by the Sumec/Sinomach Group, a Fortune 500-listed company. - **Half-cut design with multi-busbar technology** - Half-cut cells reduce power losses under partial shading and lower internal current loads, while multi-busbar interconnection improves current collection and minimizes the impact of microcracks on energy yield. - **N-type cell technology** - The use of N-type cells provides a lower LID (Light Induced Degradation) coefficient and a more favorable power temperature coefficient compared to the P-type cells used in many competing series from this era. - **Established manufacturer track record** - Phono Solar has been operating since 2004, giving it over 20 years of production history in a PV industry known for high brand turnover - a real indicator of the manufacturer's ability to honor long-term power warranties reaching 25 years. ## Cons - **Production discontinued in 2021** - The Monocrystalline 60 series was discontinued (end of production: 2021), meaning limited availability of identical replacement modules for expanding existing installations and potentially longer turnaround for warranty service claims. - **Warranty below current N-type standard** - The 15-year product warranty and 25-year linear power warranty reflect a market standard from several years ago, while current N-type/TOPCon series from Tier-1 manufacturers typically offer up to 25 years of product warranty and 30 years of power warranty. - **No bifacial variant** - The series lacks a bifacial option, ruling out additional energy gain from light reflected off the ground (particularly relevant for ground-mount installations or bright roofing surfaces) that is available in newer competing solutions. ## About this series The Phono Solar Monocrystalline 60 series is designed for installations where high energy production on a limited roof area and stable performance in variable weather conditions are key. The use of **PERC-type monocrystalline cells** allows for better utilization of diffuse light, which, in the Polish context, translates to more predictable annual energy yields. Thanks to **half-cut construction**, the modules are less sensitive to losses caused by partial shading and have lower current loads, which supports long-term reliability. In practice, this is a good solution for single-family homes, small businesses, and multi-family buildings, where aesthetics and easy adaptation to the roof layout are important. The series also features **multi-busbar technology**, which improves current collection from the cells and reduces the impact of microcracks. The entire system is complemented by **robust mechanical resistance** to wind and snow loads - which is essential for installation on roofs in different parts of Poland. ## Notable figures - At 19.7% efficiency, this panel is on par with typical \*\*N-type 0-400W\*\* modules - Power density of 196.7 W/m² matches the \*\*N-type 0-400W\*\* median - -0.29%/°C temperature coefficient (median: -0.32%/°C) - retains ~1% more power at high temperatures - Weight of 17.0 kg (5.0 kg below \*\*N-type 0-400W\*\* median of 22.0 kg) allows easier transport and roof mounting - #12571 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### Is the Phono Solar Monocrystalline 60 series still available for purchase? The Phono Solar Monocrystalline 60 series has been discontinued and is no longer offered as a new product. If you need a similar specification, consider newer Phono Solar lines or other Tier 1 manufacturers featuring N-type technology and half-cut cell construction. Limited stock may still be available through some distributors — check current inventory with your local reseller. ### What warranty does the Phono Solar Monocrystalline 60 carry? The module comes with a 15-year product warranty covering material and workmanship defects, and a 25-year linear power output warranty guaranteeing that the panel retains a specified percentage of its rated output after 25 years of operation. Both warranty periods are standard for Tier 1 manufacturers and reflect the producer's confidence in long-term module reliability. ### What does N-type cell technology in the Phono Solar Monocrystalline 60 mean for a homeowner? N-type cells exhibit lower light-induced degradation (LID) and slower long-term aging compared to conventional P-type PERC cells. In practical terms, this means more stable energy production over the module's lifetime and better efficiency retention at higher operating temperatures — an advantage during summer months when roof temperatures can noticeably reduce output from older-generation panels. ### Does the half-cut cell design in the Phono Solar Monocrystalline 60 actually help with partial shading? Yes. Splitting each cell into two halves means that shading on one part of the module — from a chimney or dormer, for example — does not fully block the other half. With standard full cells, a single shaded row can disable an entire series string. The half-cut design significantly reduces power losses, which translates to measurable gains in annual yield on roofs with complex layouts. ### What is the peak power of the Phono Solar Monocrystalline 60 and how many panels do I need for a 10 kWp system? The module is rated at 360 Wp. To build a system with a combined capacity of approximately 10 kWp, you would need around 28 panels. During system planning, keep in mind that 28 modules typically require between 50 and 55 m² of usable roof area, depending on the specific mounting configuration. ### How do the Phono Solar Monocrystalline 60 panels perform under the overcast conditions typical in Poland? Monocrystalline N-type cells in this series respond better to diffuse light than older polycrystalline modules and maintain higher efficiency at low irradiance levels — important in Poland where autumn and winter bring predominantly cloudy days. The multi-busbar interconnection also reduces the impact of microcracks that can develop after repeated freeze-thaw cycles, supporting consistent output over multiple seasons. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ns-320-360mh-60-1640-992-30-68f52ba9ed5b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | -20 W, lighter, +3.7 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | -20 W, lighter, +3.7 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | -40 W, +3.6 pp, +5 yr warranty | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | +10 W, lighter, +3.5 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | +10 W, lighter, +3.5 pp | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | Lighter, +3.3 pp, +5 yr warranty | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | -50 W, lighter, +3.3 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -20 W, +3.3 pp, +5 yr warranty | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | +3.3 pp, +5 yr warranty | | [Phono Solar NS-330MH-60](https://comparepv.com/panel/phono-solar-ns-330mh-60) | 330 W | +10 W, +0.6 pp | | [Phono Solar NS-340MH-60](https://comparepv.com/panel/phono-solar-ns-340mh-60) | 340 W | +20 W, +1.2 pp | | [Phono Solar NS-350MH-60](https://comparepv.com/panel/phono-solar-ns-350mh-60) | 350 W | +30 W, +1.9 pp | | [Phono Solar NS-360MH-60](https://comparepv.com/panel/phono-solar-ns-360mh-60) | 360 W | +40 W, +2.5 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +80 W, +2.9 pp, +15 yr warranty | | [Lina Energy LEPV 400](https://comparepv.com/panel/lina-energy-lepv-400) | 400 W | +80 W, +2.6 pp, +5 yr warranty | | [PolyCrown Solar Tech NS-360MH-60](https://comparepv.com/panel/polycrown-solar-tech-ns-360mh-60) | 360 W | +40 W, +2.5 pp | --- Source: https://comparepv.com/panel/phono-solar-ns-320mh-60 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.