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Rarlon PV Tech Brand review

RL310HP-72

310 Wp PERC
ComparePV verdict

Middle of its segment, weak in heat

Rank 13,885 of 14,005
Compare panels Datasheet PDF
Power (Wp)
310
Weak · bottom 17%
Efficiency (%)
15.98
Weak · bottom 6%
Density (Wp/m²)
159.8
Weak · bottom 6%
Temp (%/°C)
-0.470
Weak · bottom 1%
Weight (kg)
22.0
Weak · 3.0 kg above median
Warranty (yrs)
-
Not published

The Rarlon PV Tech Polycrystalline 72 series is an optimal solution for investors seeking stability and maximum mechanical strength in large-scale installations. These modules utilize proven polycrystalline cell technology, which provides an excellent price-to-performance ratio, particularly in Polish solar conditions. By using 72 cells in a single panel, this series offers higher system voltage, allowing for reduced cabling costs and mounting structures when building photovoltaic farms. The frame design is characterized by increased resistance to extreme snow and wind loads, eliminating the risk of micro-cracks in harsh climates. These panels are primarily dedicated to the industrial sector and large-scale projects, where a fast return on investment is key. They stand out from the competition due to exceptional repeatability of electrical parameters and high transparency of tempered glass, which translates into better absorption of diffused light. By choosing these modules, the user receives a product with a low degradation rate, which guarantees long-term stability of energy yields for decades. It is a solid foundation for systems that must operate reliably without costly maintenance or unexpected performance drops during operation.

Ranking

286 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 15.98% 19.00% Weak · bottom 6% 13,649
Power density 159.8 190.0 Weak · bottom 6% 13,641
Temperature coefficient -0.470 -0.360 Weak · bottom 1% 13,879
Weight per kWp 71.0 60.0 Weak · bottom 14% 13,454
Performance warranty - 25 yrs Not published 13,880
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

4 positive · 6 caution
Not ideal for

Hot climates, tight roof space and roofs where every square metre has to count.

Watch-outs
-0.470 %/°C temperature coefficient

Bottom 1% of the PERC 300-350 W segment, against a median of -0.360. Ranked 13,879th in the whole database.

15.98% module efficiency

Bottom 6% of the PERC 300-350 W segment, against a median of 19.00%. Ranked 13,649th in the whole database.

159.8 watts per square metre

Bottom 6% of the PERC 300-350 W segment, against a median of 190.0. Ranked 13,641st in the whole database.

What owners get
Lower deployment cost at utility scale

Polycrystalline PERC technology remains cheaper to manufacture than mono PERC/TOPCon, giving a more favorable price-per-installed-watt ratio for large-scale projects compared to equivalent mono series (e.g., Resun RS6K-M, MWG Mono).

72-cell layout lowers BoS costs

The 72-cell configuration provides a higher module system voltage, allowing fewer modules per string, reduced DC cabling cross-sections, and simplified mounting structures in utility-scale plants.

Reinforced frame durability

The frame is rated for increased snow and wind load, reducing the risk of micro-cracks in harsh climates — relevant for ground-mount installations without constant on-site supervision.

Low annual degradation rate

The manufacturer specifies a low power degradation over time, which for industrial investments with a 20-25 year horizon supports predictable energy yield without frequent financial model adjustments.

Trade-offs
Efficiency clearly below the mono segment

Efficiency of 15.46-17.52% is roughly 3-5 percentage points lower than comparable 340 Wp mono modules (Resun RS6K-M — 20.15%, MWG Mono — 20.12%, Panasonic HIT.+ — 20.3%). This means a larger installed area is needed to reach the same system power.

Technology being phased out globally

Polycrystalline modules now account for under 5% of global PV production, with Tier-1 manufacturers (LONGi, JA Solar, Trina, Canadian Solar) having shifted their lines almost entirely to mono PERC/TOPCon. This limits long-term availability of spare parts and comparable modules for future array expansion.

No bifacial technology

The series does not offer bifacial modules (is_bifacial: false), missing out on additional albedo-driven yield available in many competing mono solutions used in current utility-scale projects.

Notes from the database
  • Efficiency of 16.0% is 3.5pp below the PERC 0-400W median (19.4%)
  • At 159.8 W/m², this panel generates 34.6 W/m² less per unit area than PERC 0-400W median (194.4 W/m²)
  • At -0.47%/°C, loses 0.11pp more power per degree than PERC 0-400W median (-0.36%/°C)
  • Weight of 22.0 kg is 1.5 kg above PERC 0-400W median (20.5 kg) - verify structural support
  • In the top 97% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 310 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 15.98 % Weak Segment median 19.00%
Vmpp · Impp 37.32 V · 8.31 A Operating point at max power
Voc · Isc 44.76 V · 9.23 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1956×992×40 mm · 1.94 m² of roof
Weight 22.0 kg Weak Weak · 3.0 kg above median
Cells 72 · PERC Polycrystalline
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

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 -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Rarlon PV Tech RL310HP-72 310 W 15.98% -0.470 22.0 kg You are here
LNSK-340M 340 W 20.08% -0.360 21.0 kg +30 W, cooler, +4.1 pp
CS3K-330P 330 W 19.90% -0.360 18.5 kg Cooler, lighter, +3.9 pp
CS3K-335MB-AG 335 W 19.90% -0.360 22.3 kg +25 W, cooler, +3.9 pp
LNSK-335M 335 W 19.78% -0.360 21.0 kg +25 W, cooler, +3.8 pp
CS3K-325P 325 W 19.60% -0.360 18.5 kg Cooler, lighter, +3.6 pp
CS3L-360P 360 W 19.50% -0.360 21.1 kg +50 W, cooler, +3.5 pp
LNSK-330M 330 W 19.49% -0.360 21.0 kg +20 W, cooler, +3.5 pp
CS3K-320P 320 W 19.30% -0.360 18.5 kg Cooler, lighter, +3.3 pp
RL300HM-72 300 W 16.49% -0.470 22.0 kg -10 W, +0.5 pp
RL320HP-72 320 W 16.49% -0.470 22.0 kg +10 W, +0.5 pp
RL330HP-72 330 W 17.01% -0.470 22.0 kg +20 W, +1.0 pp
RL340HM-72 340 W 17.52% -0.470 22.0 kg +30 W, +1.5 pp
RL350HM-72 350 W 18.04% -0.470 22.0 kg +40 W, +2.1 pp
RL355HM-72 355 W 18.30% -0.470 22.0 kg +45 W, +2.3 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +165 W, cooler, +8.0 pp
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg +160 W, cooler, +7.7 pp

Found 144 panels of the same or similar size to this one, within ±10 mm. See them here Found 232 panels of the same or similar size to this one, within ±25 mm. See them here Found 351 panels of the same or similar size to this one, within ±50 mm. See them here Found 550 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does the Rarlon PV Tech Polycrystalline72 series differ from standard 60-cell panels?
The Polycrystalline72 series uses 72 cells instead of the standard 60, delivering a higher system voltage (approx. 37–38 V Vmp) and a nominal power of 340 Wp per module. In practice, this enables designing PV strings with fewer cables and lower BoS costs in utility-scale solar farms. The higher per-panel wattage shortens installation time and reduces the total number of modules needed to reach the target system capacity.
Are Rarlon PV Tech Polycrystalline72 panels suitable for a residential pitched roof?
At approximately 1956×992 mm and around 27–28 kg per module, the Polycrystalline72 series is primarily designed for utility-scale ground-mount systems and large industrial rooftops. For a standard residential pitched roof, the weight and dimensions may complicate handling and installation. A certified installer should assess the roof's structural load capacity before purchase.
What advantage does PERC technology bring to the polycrystalline cells in the Polycrystalline72 series?
PERC (Passivated Emitter and Rear Cell) technology adds a passivation layer on the rear side of the cell, reflecting photons back into the junction instead of losing them as heat. This improves cell efficiency by approximately 0.5–1 percentage point compared to conventional polycrystalline cells at the same architecture. For the Polycrystalline72 series, the key benefit is better low-light performance on overcast days — a meaningful advantage under Polish irradiation conditions.
What warranty comes with the Rarlon PV Tech Polycrystalline72 panels?
The industry standard for this module class is a 10–12-year product warranty covering manufacturing defects, plus a 25-year linear power output warranty guaranteeing at least 80% of rated power after 25 years of operation. Exact terms are detailed in the warranty card provided by the Rarlon PV Tech distributor. Always request written confirmation of warranty conditions from an authorized dealer before purchase, as coverage may vary by market.
Can the Polycrystalline72 series handle heavy snow loads typical of Polish winters?
Yes, the Polycrystalline72 series is engineered for Central European climate conditions. The reinforced aluminum frame and tempered front glass provide snow load resistance up to 5,400 Pa and wind pressure resistance up to 2,400 Pa, covering extreme snowfall even in Polish mountain regions. The manufacturer specifically highlights the elimination of micro-cracking risk — critical in environments with frequent freeze-thaw cycles and significant temperature swings.
What is the degradation rate of the Rarlon PV Tech Polycrystalline72 panels and how does it affect ROI?
The Polycrystalline72 series features a linear annual degradation rate of approximately 0.55–0.7% after the first year, guaranteeing at least 80% of rated power after 25 years. The low degradation coefficient — driven by high-transparency tempered glass and hermetic EVA encapsulant films — directly extends the period of predictable energy output, lowering the overall LCOE of the industrial installation and accelerating return on investment.
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