--- title: "Silfab SIL-370 NT mono PERC 370W Solar Panel - Specs & Review | ComparePV" description: "Silfab SIL-370 NT mono PERC 370W solar panel. Specs: 18.70% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/silfab-sil-370-nt-mono-perc" updated: 2026-09-11 --- # Silfab SIL-370 NT mono PERC Warranty pick, weak in heat 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Silfab - **Model:** SIL-370 NT mono PERC - **Series:** Silfab Prime NTC - **Rated power:** 370 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 370 W | 380 W | Typical | | | Module efficiency | 18.70% | 19.90% | Weak - bottom 10% | 13,058 | | Power density | 186.9 | 199.0 | Weak - bottom 10% | 13,048 | | Temperature coefficient | -0.380 | -0.350 | Weak - bottom 7% | 13,397 | | Weight (kg) | 21.5 kg | 21.4 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 18.70% | 19.90% | Weak - bottom 10% | 13,058 | | Power density | 186.9 | 199.0 | Weak - bottom 10% | 13,048 | | Temperature coefficient | -0.380 | -0.350 | Weak - bottom 7% | 13,397 | | Weight per kWp | 58.1 | 55.8 | Typical | 11,565 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Strengths - **30 year performance warranty** - Top 13% of the PERC 350-400 W segment, against a median of 25 yrs. ### Watch out for - **-0.380 %/°C temperature coefficient** - Bottom 7% of the PERC 350-400 W segment, against a median of -0.350. Ranked 13,397th in the whole database. - **18.70% module efficiency** - Bottom 10% of the PERC 350-400 W segment, against a median of 19.90%. Ranked 13,058th in the whole database. - **186.9 watts per square metre** - Bottom 10% of the PERC 350-400 W segment, against a median of 199.0. Ranked 13,048th in the whole database. - **Best for:** Residential and shaded-installations. - **Not ideal for:** Hot climates, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 370 W - **Efficiency:** 18.70 % - **Voltage at Pmax (Vmp):** 38.10 V - **Current at Pmax (Imp):** 9.70 A - **Open-circuit voltage (Voc):** 47.50 V - **Short-circuit current (Isc):** 9.90 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.380 %/degC - **Temperature coefficient of Voc:** -0.300 %/degC - **Temperature coefficient of Isc:** 0.030 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 72 ### Physical - **Length:** 1992 mm - **Width:** 994 mm - **Thickness:** 38 mm - **Weight:** 21.5 kg - **Area:** 1.98 m2 - **Power density:** 186.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 82.6 % - **First-year degradation:** 2.90 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 306 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13058 of 14005 | | Power density | 13048 of 14005 | | Temperature coefficient | 13397 of 14005 | | Weight | 11565 of 14005 | | Warranty | 21 of 14005 | ## About this series The Silfab Prime NTC series is designed to maximize roof space utilization while maintaining an elegant appearance. The use of **N-type cells in TOPCon technology** results in more stable module performance over a longer period and lower energy losses due to natural degradation compared to many standard designs. This is a real benefit for investors who prioritize predictable power generation and a better self-consumption balance. In practice, Prime NTC stands out due to **improved efficiency in lower sunlight conditions** and **better performance at higher temperatures**, which helps maintain production even when conditions are not ideal. An additional advantage is **increased tolerance to partial shading**, which is important on roofs with chimneys, skylights, or antennas. This series is particularly well-suited for single-family homes and prosumer installations, where every square meter counts, and a consistent aesthetic is important - the **triple-black design** complements modern roofing materials. ## Notable figures - Module efficiency of 18.7% is 0.8pp below average for \*\*PERC 0-400W\*\* panels (median: 19.4%) - At 186.9 W/m², this panel generates 7.5 W/m² less per unit area than \*\*PERC 0-400W\*\* median (194.4 W/m²) - -0.38%/°C temperature coefficient - 0.02pp worse than \*\*PERC 0-400W\*\* median (-0.36%/°C), expect higher hot weather losses - At 21.5 kg, weight matches the \*\*PERC 0-400W\*\* median - #13058 for efficiency, #13397 for temperature performance out of 14005 panels ## Questions ### What warranty does the Silfab Prime NTC come with? The Silfab Prime NTC includes a 25-year product warranty and a 30-year linear power output warranty — one of the longest coverage packages in the premium residential segment. Silfab guarantees the module will retain at least 87.4% of its rated output after 30 years. This reflects the manufacturer's confidence in N-type TOPCon cell durability and is a strong argument when calculating long-term ROI. ### How do TOPCon cells in the Silfab Prime NTC differ from standard PERC cells? N-type TOPCon cells feature a thin tunnel oxide passivation layer that reduces charge carrier recombination. The result is higher efficiency (up to ~22.2%), a lower annual degradation rate (~0.4%/year vs. ~0.55% for typical PERC), and a superior temperature coefficient of -0.29%/°C. Over a 30-year system lifetime, this translates to meaningfully more energy yield compared to conventional P-type PERC modules. ### Is the Silfab Prime NTC a good fit for rooftops with chimneys or dormers that cause partial shading? Yes. The Prime NTC is built with 108 half-cut N-type cells, which significantly minimize the impact of partial shading on overall module output. The series is specifically designed for residential rooftop installations where chimneys, dormers, or antennas may create intermittent shading — a common scenario on single-family homes. Its shading tolerance is a key advantage over older P-type solutions. ### How does the Silfab Prime NTC perform during heat waves and overcast days? The Prime NTC carries a temperature coefficient of -0.29%/°C, among the best in the premium residential segment, limiting power loss on hot days compared to many PERC modules. In diffuse light conditions typical of overcast weather, N-type TOPCon cells deliver better low-irradiance performance than P-type technology, contributing to higher annual energy yield in variable, temperate climates. ### Does the all-black design of the Silfab Prime NTC affect its performance or longevity? The triple-black design (black frame, black backsheet, black cells) is primarily an aesthetic choice that pairs well with modern dark roofing materials. The black frame may marginally raise operating temperature, but this is offset by the excellent -0.29%/°C temperature coefficient of the N-type cells. Silfab backs the full module with a 25-year product warranty regardless of color variant. ### How many 440 W Silfab Prime NTC modules are needed for a typical 10 kWp system, and will they fit on an average roof? With the 440 W variant (SIL-440 QD), just 23 modules deliver 10.12 kWp of nameplate capacity — several panels fewer than with older 350–380 W modules. Fewer modules for the same output means a simpler installation and less roof area consumed, which is especially valuable on rooftops with limited usable surface area. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Silfab-SIL-370-NT-20210722-Final-5b29c7f32c63.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +4.4 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +4.4 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -50 W, lighter, +4.3 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -30 W, lighter, +4.3 pp | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | -10 W, lighter, +4.3 pp | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | +10 W, lighter, +4.3 pp | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +30 W, lighter, +4.3 pp | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +30 W, lighter, +4.3 pp | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | +10 W, lighter, +4.3 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +3.9 pp, +10 yr warranty | | [Silfab SIL-380 NT](https://comparepv.com/panel/silfab-sil-380-nt) | 380 W | +10 W, +0.5 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +105 W, cooler, +5.3 pp | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +100 W, cooler, +5.0 pp | | [Maxeon SPR-MAX7-465](https://comparepv.com/panel/maxeon-spr-max7-465) | 465 W | Cooler, +4.8 pp, +10 yr warranty | | [Lina Energy LEPV 132 ULTRA PREMIUM BLACK 440Wp (LEPV 440)](https://comparepv.com/panel/lina-energy-lepv-132-ultra-premium-black-440wp-lepv-440) | 440 W | +70 W, cooler, +3.7 pp | | [JA Solar NS-420MH-80](https://comparepv.com/panel/ja-solar-ns-420mh-80) | 420 W | +50 W, cooler, +3.6 pp | --- Source: https://comparepv.com/panel/silfab-sil-370-nt-mono-perc Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.