--- title: "Rarlon PV Tech RL545HM 545W Solar Panel - Specs & Review | ComparePV" description: "Rarlon PV Tech RL545HM 545W solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/rarlon-pv-tech-rl545hm" updated: 2026-09-11 --- # Rarlon PV Tech RL545HM Efficiency leader, weak in heat 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** Rarlon PV Tech - **Model:** RL545HM - **Series:** Monocrystalline 144 - **Rated power:** 545 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 545 W | 535 W | Strong - top 12% | | | Module efficiency | 21.30% | 20.90% | Strong - top 4% | 8,519 | | Power density | 210.9 | 209.0 | Typical | 9,399 | | Temperature coefficient | -0.470 | -0.350 | Weak - bottom 1% | 13,879 | | Weight (kg) | 27.0 kg | 28.4 kg | Strong - top 13% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 20.90% | Strong - top 4% | 8,519 | | Power density | 210.9 | 209.0 | Typical | 9,399 | | Temperature coefficient | -0.470 | -0.350 | Weak - bottom 1% | 13,879 | | Weight per kWp | 49.5 | 53.0 | Strong - top 13% | 3,095 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Strengths - **21.30% module efficiency** - Top 4% of the PERC 500-550 W segment, against a median of 20.90%. Ranked 8,519th in the whole database. - **49.5 kg per kWp** - Top 13% of the PERC 500-550 W segment, against a median of 53.0. ### Watch out for - **-0.470 %/°C temperature coefficient** - Bottom 1% of the PERC 500-550 W segment, against a median of -0.350. Ranked 13,879th in the whole database. - **25 year performance warranty** - Bottom 23% of the PERC 500-550 W segment, against a median of 30 yrs. - **Best for:** Small roofs that need every watt and weight-limited structures. - **Not ideal for:** Hot climates and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 41.80 V - **Current at Pmax (Imp):** 13.04 A - **Open-circuit voltage (Voc):** 49.65 V - **Short-circuit current (Isc):** 13.92 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.470 %/degC - **Temperature coefficient of Voc:** -0.346 %/degC - **Temperature coefficient of Isc:** 0.036 %/degC - **NOCT:** 47 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 27.0 kg - **Area:** 2.58 m2 - **Power density:** 210.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 10 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 80.0 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.73 % - **Output after 30 years:** 416 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8519 of 14005 | | Power density | 9399 of 14005 | | Temperature coefficient | 13879 of 14005 | | Weight | 3095 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Half-Cut cell architecture** - Splitting the 144 monocrystalline cells into half-cells reduces resistive losses and minimizes hot-spot risk under partial shading, a premium-segment standard also used in comparable products such as IBC Solar's 182M Half Cell 540-550W series. - **Competitive power density** - Power output up to 550 Wp across 144 cells is on par with peer comparables - IBC Solar (550W), Goldi Solar GS10-B144-TF (550W), and Jetion JT SGh (550W) - enabling comparable reductions in module count, mounting structures, and cabling per kWp installed. - **Reinforced mechanical resistance and PID protection** - The manufacturer states high PID resistance and a reinforced, corrosion-resistant frame, relevant for extreme wind and snow loads - important in Poland's climate with significant seasonal variability. - **Power warranty in line with industry standard** - The 25-year linear power warranty and 10-year product warranty match the typical terms offered by established tier-1 manufacturers in this segment (e.g., Goldi Solar, Jetion), ensuring a predictable degradation profile. ## Cons - **PERC technology instead of N-type** - Efficiency of 20.7-21.5% based on PERC sits near the lower end of what this technology can achieve, while the market in 2026 is increasingly shifting toward TOPCon/HJT modules offering higher efficiency and lower LID degradation - this may translate into lower annual yield compared to newer N-type solutions in the same power class. - **No confirmed Tier-1 (BNEF) status** - Available sources (BloombergNEF reports, ENF Solar) do not list Rarlon PV Tech as a Tier-1 manufacturer, which compared to more established brands may present an additional bankability risk when financing commercial and utility-scale PV projects. ## About this series Rarlon PV Tech Monocrystalline 144 panels utilize advanced **Half-Cut cell** architecture, which drastically reduces energy losses resulting from internal resistance and partial shading of the module. Thanks to the use of 144 precision-crafted monocrystalline cells, this series offers **maximum power density** per square meter of surface area, making it an ideal solution for demanding commercial projects and large-scale photovoltaic farms. The innovative design provides a significantly better temperature coefficient than standard solutions, allowing for stable operation and high yields even on the hottest summer days. A key technological differentiator is the **high resistance to the PID effect** and the reinforced, corrosion-resistant frame structure, guaranteeing full mechanical durability under extreme wind loads or accumulated snow. By choosing this series, investors and developers gain significant **BOS cost optimization**, as the higher unit power of a single panel allows for a real reduction in the number of necessary mounting components, support structures, and cabling. This is a solution dedicated primarily to professionals seeking uncompromising reliability and the fastest possible return on investment in specific Polish climatic conditions, where variable sunlight requires the highest operational efficiency from the equipment used throughout the year. ## Notable figures - Efficiency of 21.3% matches the \*\*PERC 500-550W\*\* median - Power density of 210.9 W/m² matches the \*\*PERC 500-550W\*\* median - At -0.47%/°C, loses 0.12pp more power per degree than \*\*PERC 500-550W\*\* median (-0.35%/°C) - Weight of 27.0 kg (1.4 kg below \*\*PERC 500-550W\*\* median of 28.4 kg) allows easier transport and roof mounting - In the top 61% for efficiency among all PERC panels ## Questions ### What warranty does Rarlon PV Tech offer on the Monocrystalline 144 series? The Rarlon PV Tech Monocrystalline 144 series comes with a 10-year product warranty covering manufacturing defects and materials, plus a 25-year linear power output warranty. This means the manufacturer guarantees that the module will maintain the power levels specified in the datasheet for a full quarter century — a standard but solid level of protection for commercial and utility-scale PV projects. ### How do the Rarlon PV Tech Monocrystalline 144 panels perform during hot summer days? The Monocrystalline 144 series features a better temperature coefficient than conventional mono panels, meaning less power loss at elevated operating temperatures. The half-cut PERC cell architecture reduces resistive losses, allowing the modules to deliver stable, high energy yields even when rooftop temperatures exceed 60°C — a real advantage given Poland's increasingly hot summers and variable irradiation conditions throughout the year. ### What is half-cut cell technology and why is it used in the Monocrystalline 144 series? Half-cut technology involves laser-cutting each silicon cell into two smaller halves. The reduced cell size lowers the operating current, which cuts resistive losses and improves shade tolerance. In the Monocrystalline 144 series, 144 PERC half-cut cells work together to push peak output to 550 Wp while improving overall module efficiency compared to standard 72-cell full-cell designs of the same footprint. ### Is the Monocrystalline 144 series resistant to PID, and what does that mean in practice? Yes, the Monocrystalline 144 series offers high resistance to Potential Induced Degradation (PID) — a phenomenon where leakage current between cells and the frame causes irreversible power loss at high system voltages. In practice, this means the modules maintain their rated output throughout their service life in high-voltage utility-scale systems, with no need for additional PID recovery devices or derating the string voltage. ### Are the 550 Wp Rarlon Monocrystalline 144 panels suitable for commercial and utility-scale PV plants? Yes, that is exactly the target application for this series. At 550 Wp with 144 PERC half-cut cells, the Monocrystalline 144 delivers high power density per square meter. The higher per-module wattage means fewer modules, fewer mounting structures, and less cabling are needed to reach a given system capacity, directly reducing Balance of System (BoS) costs and improving overall project LCOE for developers and investors. ### Can the Rarlon Monocrystalline 144 frame handle heavy snow loads and strong winds typical in Poland? The Monocrystalline 144 series uses a reinforced, corrosion-resistant aluminum frame engineered for extreme mechanical loads — both heavy snow accumulation common in Polish winters and high-speed wind pressure. The frame is built to guarantee full structural integrity under these conditions. Always verify the exact certified load ratings (snow and wind) in the manufacturer's datasheet before finalizing the mounting design for a specific site. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RL550HM-d9b7f6155e1d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +3.7 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +3.4 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.3 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +3.2 pp, +5 yr warranty | | [Rarlon PV Tech RL530HM](https://comparepv.com/panel/rarlon-pv-tech-rl530hm) | 530 W | -15 W, -0.6 pp | | [Rarlon PV Tech RL535HM](https://comparepv.com/panel/rarlon-pv-tech-rl535hm) | 535 W | -10 W, -0.4 pp | | [Rarlon PV Tech RL540HM](https://comparepv.com/panel/rarlon-pv-tech-rl540hm) | 540 W | Very close match | | [Rarlon PV Tech RL550HM](https://comparepv.com/panel/rarlon-pv-tech-rl550hm) | 550 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +105 W, cooler, +3.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +100 W, cooler, +3.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +95 W, cooler, +3.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +90 W, cooler, +3.3 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +85 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/rarlon-pv-tech-rl545hm Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.