--- title: "Solar N Plus SP-N16/156HG-640W 640W Solar Panel - Specs & Review | ComparePV" description: "Solar N Plus SP-N16/156HG-640W 640W solar panel. Specs: 22.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/solar-n-plus-sp-n16-156hg-640w" updated: 2026-09-11 --- # Solar N Plus SP-N16/156HG-640W Solid all-round for its segment 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Solar N Plus - **Model:** SP-N16/156HG-640W - **Series:** SP-N16/156HG - **Rated power:** 640 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 640 W | 620 W | Strong - top 9% | | | Module efficiency | 22.90% | 22.80% | Typical | 2,359 | | Power density | 229.0 | 227.7 | Typical | 2,389 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 34.0 kg | 32.7 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.90% | 22.80% | Typical | 2,359 | | Power density | 229.0 | 227.7 | Typical | 2,389 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 53.1 | 53.1 | Typical | 6,913 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 640 W - **Efficiency:** 22.90 % - **Voltage at Pmax (Vmp):** 49.36 V - **Current at Pmax (Imp):** 12.97 A - **Open-circuit voltage (Voc):** 57.45 V - **Short-circuit current (Isc):** 13.70 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:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 156 - **Bifacial:** yes ### Physical - **Length:** 2465 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 34.0 kg - **Area:** 2.80 m2 - **Power density:** 229.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **Output after 30 years:** 559 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2359 of 14005 | | Power density | 2389 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 6913 of 14005 | | Warranty | 21 of 14005 | ## About this series The Solar N Plus SP-N16/156HG series are N-type modules designed to maximize energy yield per square meter - particularly in situations where power density and limited mounting space are critical. The use of **half-cut** and **MBB** technology improves performance under partial shading and reduces connection losses, resulting in more stable energy production in real-world rooftop and industrial conditions. The modules are also optimized for **high PID resistance**, ensuring better long-term performance - which is important for higher voltage system installations. You also gain **good performance in low-light conditions**, which is relevant in the Polish climate, with cloudy or smoggy weather. SP-N16/156HG is the ideal choice for PV farms, warehouses, and commercial projects where lower system balance costs and predictable energy production over the long term are key. By combining N-type technology with a refined module design, this series effectively differentiates itself from typical P-type panels in terms of durability and energy yield stability. ## Notable figures - Efficiency of 22.9% matches the \*\*TOPCon 600-650W\*\* median - At 228.9 W/m² power density, roof space requirements are typical for \*\*TOPCon 600-650W\*\* panels - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 600-650W\*\* median - At 34.0 kg (1.3 kg above \*\*TOPCon 600-650W\*\* median of 32.7 kg), requires checking roof load capacity - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What warranty does the Solar N Plus SP-N16/156HG series come with? The SP-N16/156HG carries a 15-year product warranty and a 30-year power warranty. After 30 years the module is guaranteed to retain at least 87.4% of its rated output. This is among the longer power warranty schedules available on the market, which is particularly relevant for commercial projects and solar farms operating under long payback horizons. ### How does TOPCon technology in the SP-N16/156HG differ from standard PERC panels? The N-type TOPCon cells used in the SP-N16/156HG eliminate boron-oxygen related Light Induced Degradation (LID) that affects P-type PERC modules. Annual power degradation is approximately 0.4% versus 0.5–0.55% for PERC. Over a 30-year system lifetime this results in meaningfully higher cumulative energy output and stable performance from day one, directly improving overall LCOE. ### Does the bifacial SP-N16/156HG actually generate energy from both sides, and is the premium worth it? Yes, the SP-N16/156HG is a bifacial module with approximately 85% bifaciality factor. The rear side harvests irradiance reflected from the mounting surface, typically adding 2–4% more annual energy on high-albedo substrates such as white roofing membranes, light gravel, or concrete. On standard pitched roofs the gain is more modest, but on elevated ground-mount structures and carports the real-world energy boost can meaningfully improve LCOE. ### How does the SP-N16/156HG perform in low-light and overcast conditions? N-type TOPCon technology delivers better performance under diffuse irradiance than conventional P-type PERC modules. The low temperature coefficient of Pmax at -0.29%/°C also limits power loss on hot summer days. In climates with frequent cloud cover or pollution haze, these two factors combine to increase annual energy yield compared to lower-cost alternatives — a meaningful advantage in Central and Northern European markets. ### What type of installations is the SP-N16/156HG best suited for — does it fit on a residential rooftop? At 650 Wp with dimensions of 2465×1134 mm and a weight of approximately 34 kg, the SP-N16/156HG is an industrial-format module designed primarily for utility-scale solar farms, industrial buildings, warehouses, and large commercial rooftops. For a single-family residential roof, the size and weight can complicate handling and mounting. It excels where minimizing module count per kWp and reducing BoS costs are the primary project drivers. ### Is the SP-N16/156HG resistant to PID and compatible with 1500V systems? The SP-N16/156HG is engineered with high PID (Potential Induced Degradation) resistance, which is a key advantage when operating at elevated system voltages. The module supports a maximum system voltage of DC 1500V, enabling longer string configurations that reduce cabling costs and the number of MPPT inputs required per inverter. Strong PID resistance is especially critical in 1500V systems, where the risk of potential-induced degradation increases significantly and can cause permanent output losses. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/sp-n16-156hg630-650w-2024v3-0-bd2e65531b13.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +2.3 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +40 W, lighter, +2.3 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +35 W, lighter, +2.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +30 W, lighter, +1.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +30 W, lighter, +1.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +1.9 pp | | [Solar N Plus CN4-620W](https://comparepv.com/panel/solar-n-plus-cn4-620w) | 620 W | -20 W, heavier, -0.7 pp | | [Solar N Plus CN4-625W](https://comparepv.com/panel/solar-n-plus-cn4-625w) | 625 W | -15 W, heavier, -0.5 pp | | [Solar N Plus SP-N16/156HG-630W](https://comparepv.com/panel/solar-n-plus-sp-n16-156hg-630w) | 630 W | -10 W, -0.4 pp | | [Solar N Plus SP-N16/156HG-635W](https://comparepv.com/panel/solar-n-plus-sp-n16-156hg-635w) | 635 W | Very close match | | [Solar N Plus SP-N16/156HG-645W](https://comparepv.com/panel/solar-n-plus-sp-n16-156hg-645w) | 645 W | +0.2 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +60 W, cooler, +2.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +55 W, cooler, +2.0 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +30 W, cooler, +1.9 pp | --- Source: https://comparepv.com/panel/solar-n-plus-sp-n16-156hg-640w Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.