--- title: "Solar N Plus SP-N16/108H415W 415W Solar Panel - Specs & Review | ComparePV" description: "Solar N Plus SP-N16/108H415W 415W solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/solar-n-plus-sp-n16-108h415w" updated: 2026-09-11 --- # Solar N Plus SP-N16/108H415W Middle of its segment, needs the roof space 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Solar N Plus - **Model:** SP-N16/108H415W - **Series:** SIRIUS - **Rated power:** 415 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) | 415 W | 435 W | Weak - bottom 9% | | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,519 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,791 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 21.0 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,519 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,791 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 50.6 | 51.4 | Typical | 4,021 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **212.5 watts per square metre** - Bottom 10% of the TOPCon 400-450 W segment, against a median of 220.2. - **21.30% module efficiency** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 22.00%. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 415 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 31.49 V - **Current at Pmax (Imp):** 13.18 A - **Open-circuit voltage (Voc):** 38.11 V - **Short-circuit current (Isc):** 13.92 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:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 1.95 m2 - **Power density:** 212.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 363 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8519 of 14005 | | Power density | 8791 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 4021 of 14005 | | Warranty | 21 of 14005 | ## About this series Solar N Plus SIRIUS photovoltaic panels set new standards in efficiency thanks to advanced **N-type TOPCon cell technology**, which effectively eliminates the problem of light-induced degradation. This series was designed to maximize energy yields even in low sunlight, which directly addresses the problem of unstable weather in the Polish climate. A key differentiator is the use of **SMBB technology**, which shortens the current flow path and minimizes the risk of micro-cracks, resulting in exceptional longevity for the entire installation. Thanks to a **low temperature coefficient**, the modules maintain high efficiency during summer heatwaves, outperforming standard older-type solutions. Bifacial versions allow for additional energy gain from radiation reflected off the ground, making them an ideal solution for large ground-mounted farms. The SIRIUS series is the optimal choice for business investors and single-family homeowners who prioritize a fast return on investment and decades of trouble-free operation. What distinguishes them from the competition is their exceptional **resistance to extreme weather conditions** and rigorous quality control, guaranteeing full repeatability of the parameters of each module. This is an advanced solution for those seeking a technological balance between innovation and real structural durability in harsh environments. ## Notable figures - Efficiency of 21.3% is 0.7pp below the \*\*TOPCon 400-450W\*\* median (22.0%) - Power density of 212.5 W/m² is 7.7 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - needs more roof space - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels - Weight of 21.0 kg is typical for \*\*TOPCon 400-450W\*\* panels - In the top 61% for efficiency among all TOPCon panels ## Questions ### What warranty does the Solar N Plus SIRIUS series come with? The SIRIUS series carries a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means the manufacturer guarantees that module efficiency will stay at the declared level for three decades. It is one of the longer power warranties currently available on the market and a significant factor when calculating the total cost of ownership of a PV system. ### What is TOPCon technology in the SIRIUS panels and is it worth the premium? TOPCon (Tunnel Oxide Passivated Contact) is a next-generation N-type cell design that eliminates light-induced degradation (LID). In practice, a SIRIUS panel does not lose rated power after the first weeks of operation, which is a well-known drawback of older PERC cells. The higher upfront cost pays back faster through elevated annual energy yields, especially given the module's 420 Wp peak power rating. ### Do Solar N Plus SIRIUS panels perform well under overcast skies and diffuse light conditions? Yes. The N-type TOPCon cells used in the SIRIUS series have superior low-irradiance response compared to P-type PERC technology. This is especially relevant in Central European climates where overcast days are common. The modules generate power even under diffuse light, resulting in measurably higher annual energy yields compared to installations using older cell architectures. ### What is SMBB technology in the SIRIUS panels and how does it affect long-term reliability? SMBB (Super Multi Busbar) replaces a few wide busbars with many narrow ones, shortening the current path inside each cell and reducing resistive losses. The key reliability benefit is mechanical: reduced thermal stress on the cell surface significantly lowers the risk of microcracks developing over years of thermal cycling. For a system designed to operate for 30 years, this is a meaningful structural durability advantage. ### Is the SIRIUS series available in a bifacial version? The standard Solar N Plus SIRIUS module is not bifacial — it collects energy from the front surface only. If you are planning a ground-mounted installation with a reflective substrate and want to capture additional albedo energy, check with your distributor whether a bifacial variant exists within this series or consider another model from the Solar N Plus portfolio that supports bifacial gain. ### How do SIRIUS panels handle summer heat — does high temperature significantly reduce their output? The SIRIUS series features a low temperature coefficient, which is characteristic of N-type TOPCon cells. This means that as module temperature rises above the standard test condition of 25°C, the power drop is smaller than with conventional PERC panels. In real-world summer conditions, where module temperatures can reach 60–70°C, SIRIUS delivers measurably more power than legacy technology, with a positive impact on annual energy production totals. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/sp-n16-108h-72867c1acbaa.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [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 | +50 W, hotter, +2.5 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +45 W, +2.3 pp | | [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | +50 W, heavier, +2.3 pp | | [Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-460w-class) | 460 W | +45 W, hotter, +2.3 pp | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | +45 W, cooler, +2.2 pp | | [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | +45 W, +2.2 pp | | [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | +45 W, cooler, +2.2 pp | | [Solar N Plus SP-M10/108HG-395](https://comparepv.com/panel/solar-n-plus-sp-m10-108hg-395) | 395 W | Hotter, heavier, -1.1 pp | | [Solar N Plus SP-M10/108HG-400](https://comparepv.com/panel/solar-n-plus-sp-m10-108hg-400) | 400 W | Hotter, heavier, -0.8 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +80 W, cooler, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +90 W, cooler, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +75 W, cooler, +3.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +85 W, cooler, +3.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +85 W, cooler, +3.2 pp | --- Source: https://comparepv.com/panel/solar-n-plus-sp-n16-108h415w 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.