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Rarlon PV Tech Brand review

RL545HM

545 Wp PERC
ComparePV verdict

Efficiency leader, weak in heat

Rank 8,647 of 14,005
Compare panels Datasheet PDF
Power (Wp)
545
Strong · top 12%
Efficiency (%)
21.30
Strong · top 4%
Density (Wp/m²)
210.9
Typical · median 209.0
Temp (%/°C)
-0.470
Weak · bottom 1%
Weight (kg)
27.0
Strong · 1.4 kg below median
Warranty (yrs)
25
Weak · bottom 23%

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.

Ranking

706 panels in the segment PERC 500-550 W
Metric This panel Median Position in segment Overall 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
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 4 caution
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.

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-outs
-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.

What owners get
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.

Trade-offs
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.

Notes from the database
  • 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

Specifications

Open datasheet PDF
Nominal power (Pmax) 545 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.30 % Strong Segment median 20.90%
Vmpp · Impp 41.80 V · 13.04 A Operating point at max power
Voc · Isc 49.65 V · 13.92 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2279×1134×35 mm · 2.58 m² of roof
Weight 27.0 kg Strong Strong · 1.4 kg below median
Cells 144 · PERC Monocrystalline
Coefficient Pmax -0.470 %/°C Weak bottom 1% of its segment
Coefficient Voc · Isc -0.346 · 0.036 %/°C
NOCT 47 °C At 800 W/m², 20 °C ambient
Product warranty 10 years Hardware defects only
Performance warranty 25 years Weak bottom 23% · median 30 yrs
End-of-warranty output 80.0 % Equals 416 W guaranteed
Degradation 2.50 → 0.73 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.470 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Rarlon PV Tech RL545HM 545 W 21.30% -0.470 27.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +3.7 pp, +5 yr warranty
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +3.5 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, +3.5 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +3.4 pp, +5 yr warranty
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, +3.3 pp, +5 yr warranty
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, +3.2 pp, +5 yr warranty
RL530HM 530 W 20.70% -0.470 27.0 kg -15 W, -0.6 pp
RL535HM 535 W 20.90% -0.470 27.0 kg -10 W, -0.4 pp
RL540HM 540 W 21.10% -0.470 27.0 kg Very close match
RL550HM 550 W 21.50% -0.470 27.0 kg Very close match
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +105 W, cooler, +3.9 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +100 W, cooler, +3.7 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +95 W, cooler, +3.5 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +90 W, cooler, +3.3 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +85 W, cooler, +3.1 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2542 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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