--- title: "Solar N Plus SP-N16/108H-425 425W Solar Panel - Specs & Review | ComparePV" description: "Solar N Plus SP-N16/108H-425 425W solar panel. Specs: 21.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/solar-n-plus-sp-n16-108h-425" updated: 2026-09-11 --- # Solar N Plus SP-N16/108H-425 Light for its output, weak in heat 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Solar N Plus - **Model:** SP-N16/108H-425 - **Series:** SP-N16/108H - **Rated power:** 425 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 425 W | 435 W | Typical | | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 218.3 | 220.2 | Typical | 6,966 | | Temperature coefficient | -0.350 | -0.290 | Weak - bottom 3% | 10,419 | | Weight (kg) | 10.8 kg | 22.0 kg | Strong - top 1% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 218.3 | 220.2 | Typical | 6,966 | | Temperature coefficient | -0.350 | -0.290 | Weak - bottom 3% | 10,419 | | Weight per kWp | 25.4 | 51.4 | Strong - top 1% | 116 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **25.4 kg per kWp** - Top 1% of the TOPCon 400-450 W segment, against a median of 51.4. Ranked 116th in the whole database. ### Watch out for - **-0.350 %/°C temperature coefficient** - Bottom 3% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 10,419th in the whole database. - **Best for:** Residential, commercial, shaded-installations and hot-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 425 W - **Efficiency:** 21.80 % - **Voltage at Pmax (Vmp):** 32.15 V - **Current at Pmax (Imp):** 13.22 A - **Open-circuit voltage (Voc):** 38.59 V - **Short-circuit current (Isc):** 14.17 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1720 mm - **Width:** 1132 mm - **Thickness:** 30 mm - **Weight:** 10.8 kg - **Area:** 1.95 m2 - **Power density:** 218.3 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:** 371 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7022 of 14005 | | Power density | 6966 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 116 of 14005 | | Warranty | 21 of 14005 | ## About this series The Solar N Plus SP-N16/108H series consists of monocrystalline modules with a 108-cell array, designed for high efficiency and stable operation under real-world conditions. They are distinguished by **TOPCon technology**, which helps to minimize energy losses and maintain good performance even when the installation operates at higher temperatures or with reduced sunlight. This is a solution for investors who want to maximize the output from the same roof or ground area. In practice, SP-N16/108H solves common installation problems such as reduced yield in hot weather, uncertainty about parameters, and the risk of faster degradation. This is made possible by **positive power tolerance**, which makes it easier to plan the project without unexpected issues after installation, and **long linear warranty**, which is essential for long-term profitability. The series is suitable for both single-family homes and small businesses, as well as commercial projects, where **high power density** and compatibility with modern inverters are important. In addition, the **IP68 sealed junction box** provides reliability in Polish weather conditions. ## Notable figures - Efficiency of 21.8% matches the \*\*TOPCon 400-450W\*\* median - Power density of 218.3 W/m² matches the \*\*TOPCon 400-450W\*\* median - At -0.35%/°C, loses 0.06pp more power per degree than \*\*TOPCon 400-450W\*\* median (-0.29%/°C) - At 10.8 kg, this panel is 11.2 kg lighter than \*\*TOPCon 400-450W\*\* median (22.0 kg) - easier handling during installation - Ranked #7022 out of 14005 panels for efficiency in the database ## Questions ### What warranty comes with the Solar N Plus SP-N16/108H panels? The SP-N16/108H series includes a 15-year product warranty and a 30-year linear power warranty. A linear warranty means degradation is spread evenly over the entire operating period without sharp early drops. This is a key factor when assessing the long-term return on investment for residential rooftop or commercial installations. ### What is TOPCon technology in the SP-N16/108H panels and is it worth the premium? TOPCon (Tunnel Oxide Passivated Contact) is a monocrystalline cell technology that uses a thin tunnel oxide layer to reduce carrier recombination. In practice, SP-N16/108H modules produce more energy under high temperatures and low irradiance conditions compared to legacy PERC modules of the same rated wattage. For a typical installation, this translates to better yield in spring, autumn, and overcast summer days. ### How do Solar N Plus SP-N16/108H panels perform in hot weather and partial shading? TOPCon technology delivers a lower temperature coefficient than standard PERC modules, meaning smaller power losses when cell temperature exceeds 25°C. The 108-cell layout also reduces the impact of partial shading on the entire string. The SP-N16/108H series maintains stable output under real-world operating conditions, which matters in climates with prolonged hot summer periods. ### Do the SP-N16/108H panels have a positive power tolerance and what does it mean for my system? Yes, the SP-N16/108H series features a positive power tolerance. This means a module rated at 440 Wp will never underperform its nameplate value — it may actually exceed it. When sizing a system, this makes it easier to select the right inverter and accurately estimate annual energy yield without the risk of discovering lower-than-expected output after installation. ### Are Solar N Plus SP-N16/108H panels compatible with modern hybrid inverters? Yes, SP-N16/108H modules are compatible with modern hybrid inverters featuring MPPT inputs designed for high-voltage strings. Their high power density and stable electrical parameters simplify inverter selection from leading manufacturers. Before purchasing, always verify that the inverter's maximum input voltage exceeds the string's open-circuit voltage (Voc) at minimum winter temperatures. ### Is the Solar N Plus SP-N16/108H series still available for purchase? The SP-N16/108H series has been discontinued and is no longer actively distributed by the manufacturer. Limited stock may still exist at some distributors, but availability is restricted and a full supply for larger projects cannot be guaranteed. If you are planning a new installation, consider current Solar N Plus series or alternative TOPCon-based modules offering comparable or improved specifications. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/sp-n16-108h420-440w-lightweight-black-frame-1-7db2c58869bf.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | Heavier, +2.2 pp, +10 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | Cooler, heavier, +2.0 pp | | [JA Solar JAT54S40-475/LR](https://comparepv.com/panel/ja-solar-jat54s40-475-lr) | 475 W | Cooler, heavier, +2.0 pp | | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | 475 W | Cooler, heavier, +2.0 pp | | [Astronergy CHSM48RN(DG)/F-BH-475](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm48rn-dg-f-bh-475) | 475 W | Cooler, heavier, +2.0 pp | | [AIKO AIKO-A475-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a475-mce54mw) | 475 W | Cooler, heavier, +2.0 pp | | [AIKO AIKO-A475-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a475-mah54mw) | 475 W | Cooler, heavier, +2.0 pp | | [Solar N Plus SP-M10/108HG-395](https://comparepv.com/panel/solar-n-plus-sp-m10-108hg-395) | 395 W | -30 W, heavier, -1.6 pp | | [Solar N Plus SP-M10/108HG-400](https://comparepv.com/panel/solar-n-plus-sp-m10-108hg-400) | 400 W | -25 W, heavier, -1.3 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, heavier, +3.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, heavier, +3.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, heavier, +2.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, heavier, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, heavier, +2.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, heavier, +2.7 pp | --- Source: https://comparepv.com/panel/solar-n-plus-sp-n16-108h-425 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.