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SP Enerji Brand review

SP-335M72

335 Wp PERC
ComparePV verdict

Light for its output, no clear weak spot

Rank 12,932 of 14,005
Compare panels Datasheet PDF
Power (Wp)
335
Strong · top 22%
Efficiency (%)
20.01
Strong · top 11%
Density (Wp/m²)
200.2
Strong · top 10%
Temp (%/°C)
-0.370
Typical · median -0.360
Weight (kg)
18.2
Strong · top 3%
Warranty (yrs)
25
Typical · median 25 yrs

The SP Enerji D6L_K3A / Solar Power 320 W - 350 W series consists of monocrystalline modules designed for stable operation in real roof and ground conditions, where predictable power output and easy maintenance are crucial. The use of monocrystalline cells ensures high efficiency in a limited area, while the refined module design helps maintain performance even in less sunny conditions and with partial cloud cover.

In practice, this series solves common problems for installers and investors: it simplifies compatibility with popular inverters, provides resistance to mechanical loads (important in snowy and windy conditions), and ensures safe operation of the installation thanks to robust electrical components and a sealed junction box. These modules are a good choice for single-family homes, small and medium-sized businesses, and commercial projects where repeatability of parameters and ease of maintenance are important.

Compared to the competition, they stand out due to their balanced combination of durability and ease of installation - without compromises that only become apparent after several seasons of operation.

Ranking

286 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.01% 19.00% Strong · top 11% 12,197
Power density 200.2 190.0 Strong · top 10% 12,187
Temperature coefficient -0.370 -0.360 Typical 13,081
Weight per kWp 54.3 60.0 Strong · top 3% 8,620
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Residential and commercial.

Strengths
54.3 kg per kWp

Top 3% of the PERC 300-350 W segment, against a median of 60.0. Ranked 8,620th in the whole database.

200.2 watts per square metre

Top 10% of the PERC 300-350 W segment, against a median of 190.0. Ranked 12,187th in the whole database.

20.01% module efficiency

Top 11% of the PERC 300-350 W segment, against a median of 19.00%.

Notes from the database
  • Efficiency of 20.0% is 0.6pp above the PERC 0-400W median (19.4%)
  • Power density of 200.2 W/m² packs 5.8 W/m² more into the same footprint vs PERC 0-400W median (194.4 W/m²)
  • At -0.37%/°C, hot weather performance is typical for PERC 0-400W panels
  • Weight of 18.2 kg (2.3 kg below PERC 0-400W median of 20.5 kg) allows easier transport and roof mounting
  • Ranked #12197 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 335 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.01 % Strong Segment median 19.00%
Vmpp · Impp 34.62 V · 9.68 A Operating point at max power
Voc · Isc 41.20 V · 10.12 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1670×1002×35 mm · 1.67 m² of roof
Weight 18.2 kg Strong Strong · top 3%
Cells 60 · PERC Monocrystalline
Coefficient Pmax -0.370 %/°C Typical median -0.360 of its segment
Coefficient Voc · Isc -0.280 · 0.048 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 10 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 85.0 % Equals 276 W guaranteed
Degradation 3.00 → 0.50 % 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
-0.370 %/°C against a segment median of -0.360
-

Alternatives

All SP Enerji panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
SP Enerji SP-335M72 335 W 20.01% -0.370 18.2 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.3 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.3 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.1 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.1 pp
GKA182M285W 285 W 23.00% - 10.8 kg -50 W, lighter, +3.0 pp
GKA182M300W 300 W 23.00% - 16.2 kg -35 W, +3.0 pp, +5 yr warranty
GKA210M320W 320 W 23.00% - 16.2 kg Lighter, +3.0 pp, +5 yr warranty
GKA210M340W 340 W 23.00% - 16.2 kg Lighter, +3.0 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg +25 W, +3.0 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg +45 W, +3.0 pp, +5 yr warranty
SP-315M72 315 W 18.82% -0.370 18.2 kg -20 W, -1.2 pp
SP-320M72 320 W 19.12% -0.370 18.2 kg -15 W, -0.9 pp
SP-325M72 325 W 19.42% -0.370 18.2 kg -10 W, -0.6 pp
SP-330M72 330 W 19.72% -0.370 18.2 kg -0.3 pp
SP-340M72 340 W 20.31% -0.370 18.2 kg +0.3 pp
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +105 W, cooler, +2.9 pp

Found 100 panels of the same or similar size to this one, within ±10 mm. See them here Found 215 panels of the same or similar size to this one, within ±25 mm. See them here Found 437 panels of the same or similar size to this one, within ±50 mm. See them here Found 772 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the SP Enerji D6L_K3A / Solar Power 320–350 W series still available for purchase?
The D6L_K3A / Solar Power 320–350 W series has been discontinued and is no longer available as new stock. Limited quantities may still exist in distributor warehouses, but availability is restricted. If you are planning a new installation, we recommend considering current SP Enerji models or equivalent alternatives to ensure full warranty coverage and long-term serviceability.
What warranty does the SP Enerji Solar Power 340 W D6L_K3A series carry?
The manufacturer offered a 10-year product warranty covering materials and workmanship, along with a 25-year linear power output warranty ensuring the modules retain at least 80% of their rated power over a quarter century. Since the series is discontinued, buyers sourcing second-hand units should verify the original installation date to determine how much warranty coverage remains.
What is PERC technology used in the SP Enerji D6L_K3A, and is it worth choosing?
PERC (Passivated Emitter and Rear Cell) adds a passivation layer on the rear side of a monocrystalline cell, reflecting photons that would otherwise be lost and boosting conversion efficiency. The D6L_K3A series reaches up to 350 W in a compact footprint. PERC performs particularly well in limited roof space and under diffuse irradiance, making it a solid choice for Central European climates with frequent cloud cover.
How do SP Enerji Solar Power 340 W modules perform under partial shading and overcast conditions?
Mono PERC cells in the D6L_K3A series are more efficient under low-irradiance and diffuse light conditions than older polycrystalline cells, which makes them well-suited for regions with frequent overcast skies. The manufacturer specifically designed this series for predictable energy yield in real-world rooftop conditions, resulting in more consistent annual production figures even on cloudy days.
Can SP Enerji D6L_K3A panels handle snow loads and high wind conditions?
The D6L_K3A series was engineered with mechanical durability in mind, featuring an aluminum alloy frame and tempered glass that typically handle snow loads up to 5,400 Pa and wind loads up to 2,400 Pa. Since the series spans 320–350 W with potentially varying dimensions, verify the exact static load ratings in the datasheet for your specific batch before finalizing the mounting system design.
Are SP Enerji Solar Power 320–350 W modules compatible with standard inverters available in Europe?
Yes, the D6L_K3A series operates within voltage and current parameters typical for 320–350 W PERC modules, ensuring broad compatibility with inverters widely used in Europe, including Fronius, SMA, Huawei, and Solis. Open-circuit voltage Voc is typically around 40–41 V and short-circuit current Isc around 9–10 A. Always cross-check the datasheet against your inverter's MPPT input range and string sizing requirements before commissioning.
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