--- title: "Fellow Energy FE54-18X(N)-425W 425W Solar Panel - Specs & Review | ComparePV" description: "Fellow Energy FE54-18X(N)-425W 425W solar panel. Specs: 21.74% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/fellow-energy-fe54-18x-n-425w" updated: 2026-09-11 --- # Fellow Energy FE54-18X(N)-425W Middle of its segment, weak in heat 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Fellow Energy - **Model:** FE54-18X(N)-425W - **Series:** FE54-18X (N) Transparent - **Rated power:** 425 W - **Cell technology:** TOPCon - **Bifacial:** yes ## 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 | 21.74% | 22.00% | Typical | 7,364 | | Power density | 217.4 | 220.2 | Typical | 7,321 | | Temperature coefficient | -0.310 | -0.290 | Weak - bottom 10% | 8,005 | | 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 | 21.74% | 22.00% | Typical | 7,364 | | Power density | 217.4 | 220.2 | Typical | 7,321 | | Temperature coefficient | -0.310 | -0.290 | Weak - bottom 10% | 8,005 | | Weight per kWp | 49.4 | 51.4 | Typical | 2,909 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.310 %/°C temperature coefficient** - Bottom 10% of the TOPCon 400-450 W segment, against a median of -0.290. - **Best for:** Commercial, agrivoltaic and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 425 W - **Efficiency:** 21.74 % - **Voltage at Pmax (Vmp):** 31.70 V - **Current at Pmax (Imp):** 13.42 A - **Open-circuit voltage (Voc):** 38.20 V - **Short-circuit current (Isc):** 14.15 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.310 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.460 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1724 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.0 kg - **Area:** 1.96 m2 - **Power density:** 217.4 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:** 371 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7364 of 14005 | | Power density | 7321 of 14005 | | Temperature coefficient | 8005 of 14005 | | Weight | 2909 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Segment-Leading Efficiency (22.3%)** - The peak efficiency of 22.3% outpaces direct competitors: Luxen LUXPOWER N5 (22.28%), ZNShine ZXM7-UHLDD108 (22.28%), and Solitek SOLID Blackstar (22.27%). On a per-m² basis, this translates into measurably higher energy yield in rooftop installations where available surface area is limited. - **N-type TOPCon: Zero LID and Low Temperature Coefficient** - N-type technology inherently eliminates light-induced degradation (LID = 0%), and the Pmax temperature coefficient is just -0.29%/°C — outperforming typical PERC modules (-0.34 to -0.36%/°C), which results in noticeably higher energy yield during hot summer months. - **80%±5% Bifaciality with Transparent Rear Layer** - A bifaciality factor of 80%±5% places this series above the market standard (70–75% for typical bifacial PERC modules). In ground-mounted installations over high-albedo surfaces (gravel, concrete), the real-world rear-side energy gain can reach 10–20% compared to equivalent monofacial modules. - **30-Year Power Warranty (0.40%/year Degradation)** - The manufacturer guarantees a minimum of 87.4% of rated power after 30 years, with an annual degradation rate of 0.40% — among the lowest in the half-cut N-type segment. By comparison, typical PERC warranties assume 0.55%/year degradation over a 25-year horizon; the cumulative difference at year 25 is approximately 3–4 percentage points in favor of this series. - **Mechanical Durability and EL Quality Control** - Certified wind load of 2,400 Pa and snow load of 5,400 Pa — exceeding the IEC 61215 standard of 2,400 Pa for snow — combined with triple electroluminescence (EL) testing throughout the production process significantly reduces the risk of cell micro-cracks. This is particularly important for rooftop installations subject to prolonged dynamic loads. ## Cons - **Limited Market Track Record** - Fellow Energy has been in operation since 2020 (approximately 5–6 years), which raises questions about long-term warranty claim fulfillment given a 30-year power warranty and 15-year product warranty. By comparison, Trina Solar has operated since 1997, JA Solar since 2005, and LONGi since 2006. Tier 1 / bankable status and inclusion on the Fortune 500 list partially mitigate this risk; however, the absence of long-term field service data for this specific series remains an objective limitation. ## About this series The **FE54-18X (N) Transparent** series comprises photovoltaic modules based on **N-type technology with half-cut cells**, which naturally eliminate the problem of light-induced degradation (Zero LID). Thanks to a **transparent backsheet and bifacial design**, the panels capture radiation from both the front and the rear side, generating noticeably more energy compared to conventional P-type modules - particularly evident under diffuse or low-irradiance conditions. The series stands out for its resistance to cell microcracks, confirmed by triple EL testing during quality control, which directly translates into reliability throughout the entire lifecycle of the installation. The reinforced mechanical structure withstands extreme wind and snow loads, while **resistance to PID** and a favorable temperature coefficient ensure stable operation in demanding climatic conditions. The modules perform well both in ground-mounted PV farm installations and on the roofs of commercial buildings, where long-term performance is essential. The manufacturer confirms quality with a **30-year power output warranty** featuring a record-low annual degradation rate of 0.40%, making this series particularly attractive to investors seeking maximum return on investment. ## Notable figures - At 21.7% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - At 217.4 W/m² power density, roof space requirements are typical for \*\*TOPCon 400-450W\*\* panels - Temperature coefficient of -0.31%/°C is 0.02pp worse than \*\*TOPCon 400-450W\*\* median (-0.29%/°C) - higher losses in summer heat - Weight of 21.0 kg is typical for \*\*TOPCon 400-450W\*\* panels - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### What is the power output warranty and degradation rate for the FE54-18X (N) Transparent series? Fellow Energy backs the FE54-18X (N) Transparent with a 30-year linear power output warranty and an annual degradation rate of just 0.40% — among the lowest in the industry. Standard P-type modules typically degrade at 0.55–0.70% per year. The product (mechanical) warranty covers 15 years. Thanks to N-type cell technology, the series exhibits Zero LID (Light Induced Degradation), preserving full rated power from day one throughout the entire system lifetime. ### Are the FE54-18X (N) Transparent modules suitable for commercial rooftop installations? Yes, the FE54-18X (N) Transparent series is designed for commercial rooftop applications where long-term performance and low operating costs are critical. With a maximum power output of 435 Wp and high-efficiency half-cut cells, the modules maximize energy production on available roof space. The reinforced mechanical structure handles high wind and snow loads, making it well-suited for industrial buildings and warehouses. ### What is N-type cell technology in the FE54-18X series and how does it compare to P-type? N-type cells deliver higher efficiency and significantly lower degradation than conventional P-type cells. The key advantage is the complete absence of LID — FE54-18X modules produce at full rated power from the very first day of operation. The half-cut cell design further reduces resistive losses and improves shade tolerance, resulting in a higher annual energy yield compared to standard P-type PERC modules. ### How does the bifacial design of the FE54-18X (N) Transparent panels work in practice? The transparent backsheet allows the module to capture solar irradiance from both the front and the rear side — reflected from the roof surface, ground, or white membrane beneath the array. This bifacial gain is especially pronounced on light-colored substrates and under diffuse irradiance conditions typical of overcast days. Compared to conventional monofacial modules, effective bifacial operation delivers a measurable increase in annual energy output. ### Is Fellow Energy a reliable manufacturer — where is the company based and does it hold Tier 1 status? Fellow Energy is a Tier 1 PV module manufacturer headquartered in Turkey. Tier 1 status is assigned by independent financial institutions and confirms that the manufacturer is financially stable and capable of honoring long-term warranties. This designation is a standard due-diligence criterion for project financing and insurance underwriting, making Fellow Energy modules eligible for bankable solar projects. ### Are the FE54-18X (N) Transparent panels resilient in harsh weather conditions, including winter frost? Yes. The FE54-18X (N) Transparent series features a reinforced frame designed to withstand extreme wind and snow loads. PID (Potential Induced Degradation) resistance and a favorable temperature coefficient ensure stable output in both high summer temperatures and severe winter frost. Triple EL (electroluminescence) testing during quality control verifies the absence of microcracks in the cells, directly supporting long-term reliability throughout the system's service life. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/FE54-18X-N-Transparent-7f863c8643d7.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +50 W, +2.3 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 | +40 W, cooler, +2.1 pp | | [JA Solar JAT54S40-475/LR](https://comparepv.com/panel/ja-solar-jat54s40-475-lr) | 475 W | +50 W, cooler, +2.1 pp | | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | 475 W | +50 W, cooler, +2.1 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 | +50 W, heavier, +2.1 pp | | [AIKO AIKO-A475-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a475-mce54mw) | 475 W | +50 W, cooler, +2.1 pp | | [AIKO AIKO-A475-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a475-mah54mw) | 475 W | +50 W, cooler, +2.1 pp | | [Fellow Energy FE54-18X(N)-415W](https://comparepv.com/panel/fellow-energy-fe54-18x-n-415w) | 415 W | -10 W, -0.5 pp | | [Fellow Energy FE54-18X Full Black](https://comparepv.com/panel/fellow-energy-fe54-18x-full-black) | 420 W | Hotter, -0.2 pp, -5 yr warranty | | [Fellow Energy FE54-18X(N)-430W](https://comparepv.com/panel/fellow-energy-fe54-18x-n-430w) | 430 W | +0.2 pp | | [Fellow Energy FE54-18X(N)-435W](https://comparepv.com/panel/fellow-energy-fe54-18x-n-435w) | 435 W | +10 W, +0.6 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +85 W, cooler, +3.3 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +70 W, cooler, +3.1 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +80 W, cooler, +3.0 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +65 W, cooler, +2.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +75 W, cooler, +2.8 pp | --- Source: https://comparepv.com/panel/fellow-energy-fe54-18x-n-425w 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.