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Sun Earth Brand review

DXM8-54HBG-420

420 Wp TOPCon Bifacial 80%
ComparePV verdict

Warranty pick, heavy for its output

Rank 3,345 of 14,129
Compare panels Datasheet PDF
Power (Wp)
420
Weak · bottom 16%
Efficiency (%)
21.50
Weak · bottom 17%
Density (Wp/m²)
215.1
Weak · bottom 18%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
24.5
Weak · 2.5 kg above median
Warranty (yrs)
40
Strong · top 1%

The Sun Earth DXM8-54HBG series are photovoltaic panels based on the latest N-type TOPCon technology, which provides noticeably better performance compared to traditional PERC cells. The double-sided bifacial design allows for the absorption of radiation from both the front and the back of the module - which translates into a real increase in energy yield, especially when installed above light surfaces or in ground-mounted systems. The glass-glass (glass-glass) construction, instead of the traditional backsheet, extends the lifespan of the panel and increases its resistance to moisture and UV radiation, which is crucial in the Polish climate with large temperature fluctuations. The series also features excellent temperature coefficients - power losses at high temperatures are significantly lower than in older technologies, which is particularly important during the summer months. The full black version, with a black frame and black glass, is ideal for rooftop installations, where aesthetics are important - on residential roofs, office buildings, and carport canopies. This solution is suitable for both consumers seeking high quality at a reasonable price, and professional installers implementing larger commercial projects.

Ranking

1,220 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.50% 22.00% Weak · bottom 17% 8,022
Power density 215.1 220.2 Weak · bottom 18% 7,946
Temperature coefficient -0.290 -0.290 Typical 2,220
Weight per kWp 58.3 51.5 Weak · bottom 8% 11,757
Performance warranty 40 yrs 30 yrs Strong · top 1% 1
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 3 caution
Best for

Residential, commercial and hot-climate.

Not ideal for

Weight-limited structures, tight roof space and roofs where every square metre has to count.

Strengths
40 year performance warranty

Top 1% of the TOPCon 400-450 W segment, against a median of 30 yrs. Ranked 1st in the whole database.

Watch-outs
58.3 kg per kWp

Bottom 8% of the TOPCon 400-450 W segment, against a median of 51.5. Ranked 11,757th in the whole database.

21.50% module efficiency

Bottom 17% of the TOPCon 400-450 W segment, against a median of 22.00%.

215.1 watts per square metre

Bottom 18% of the TOPCon 400-450 W segment, against a median of 220.2.

Notes from the database
  • At 21.5% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • 215.1 W/m² power density is 5.1 W/m² below TOPCon 400-450W median (220.2 W/m²) - requires larger installation area
  • Temperature coefficient of -0.29%/°C matches the TOPCon 400-450W median
  • At 24.5 kg, this panel is 2.5 kg heavier than the TOPCon 400-450W median (22.0 kg) - more demanding for installation crews
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 420 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.50 % Weak Segment median 22.00%
Vmpp · Impp 31.60 V · 13.29 A Operating point at max power
Voc · Isc 37.90 V · 14.10 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 24.5 kg Weak Weak · 2.5 kg above median
Cells 108 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.230 · 0.040 %/°C
Product warranty 40 years Hardware defects only
Performance warranty 40 years Strong top 1% · median 30 yrs
End-of-warranty output 83.4 % Equals 367 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Sun Earth in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 420 Wp appear here. The rest cover the whole series.

I-V Curve (420W~455W) I-V Curve (420W~455W) Whole series

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
-
With bifacial gain
-

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

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Sun Earth DXM8-54HBG-420 420 W 21.50% -0.290 24.5 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +45 W, +2.3 pp, -10 yr warranty
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg +45 W, +2.3 pp, -10 yr warranty
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg +50 W, lighter, +2.2 pp
AIKO-A470-MAH54Mb 470 W 23.60% -0.260 21.5 kg +50 W, +2.1 pp, -10 yr warranty
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg +40 W, +2.1 pp, -10 yr warranty
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg +50 W, +2.1 pp, -10 yr warranty
SKT390M10 390 W 19.97% -0.290 20.5 kg Lighter, -1.5 pp, -15 yr warranty
DXM8-54HBG-430 430 W 22.00% -0.290 24.5 kg +10 W, +0.5 pp
DXM8-54HBG-435 435 W 22.30% -0.290 24.5 kg +15 W, +0.8 pp
DXM8-54HBG-440 440 W 22.50% -0.290 24.5 kg +20 W, +1.0 pp
DXM8-54HBG-450 450 W 23.00% -0.290 24.5 kg +30 W, +1.5 pp
DXM8-54HBG-455 455 W 23.30% -0.290 24.5 kg +35 W, +1.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +90 W, +3.5 pp, -10 yr warranty
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +75 W, +3.3 pp, -10 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +85 W, +3.2 pp, -10 yr warranty
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +85 W, +3.2 pp, -10 yr warranty

Found 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here

About the DXM8-54HBG series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What sets the TOPCon technology in Sun Earth DXM8-54HBG panels apart from PERC cells?
The N-type TOPCon cells used in the DXM8-54HBG series deliver a lower temperature coefficient and higher conversion efficiency than PERC cells. This means smaller power losses on hot days and a higher annual energy yield. TOPCon also performs better under low-irradiance conditions - early morning, late evening, and overcast skies - which is a real advantage in central European climates.
What warranty does the Sun Earth DXM8-54HBG carry, and how does it compare to the competition?
The DXM8-54HBG series comes with an exceptionally long 40-year product warranty and a 40-year linear power output warranty. This is among the longest warranty periods available in the solar panel market. The manufacturer's confidence stems directly from the durability of the glass-glass construction and the inherently slower degradation rate of N-type TOPCon cells compared to older technologies.
Do the bifacial DXM8-54HBG panels actually produce more power, and when is the gain largest?
Yes. The bifacial design allows the rear side to absorb light reflected from the ground, boosting energy yield by up to 10-15% compared to a conventional single-sided module. The effect is most pronounced over bright surfaces - concrete, gravel, or snow - and in ground-mounted systems with adequate clearance beneath the array. On dark rooftop surfaces, the bifacial gain is noticeably smaller.
Is the full black version of the Sun Earth DXM8-54HBG a good fit for a sloped residential rooftop?
Yes, the full black variant - featuring a black frame and black glass - is designed specifically for that use case. It blends seamlessly into dark roof coverings without disrupting the home's appearance. With up to 455 W per panel in a compact form factor, it makes efficient use of available roof space. The modules are equally well suited for office buildings and carport canopies.
Why does the Sun Earth DXM8-54HBG use glass-glass construction instead of a traditional polymer backsheet?
Dual glass - two glass sheets instead of glass plus a backsheet film - provides significantly better protection against moisture ingress, UV radiation, and thermal stress. In climates with large seasonal temperature swings, traditional backsheets can degrade over time. The glass-glass build eliminates that risk, extends module lifespan, and is the primary reason the manufacturer backs the DXM8-54HBG with a 40-year warranty.
Which inverter should be paired with the 455 W Sun Earth DXM8-54HBG panel?
The DXM8-54HBG 455 W module is compatible with standard string inverters available on the market - including SMA, Fronius, Huawei, and GoodWe - provided the inverter's MPPT input voltage range covers the planned string voltage. When sizing the string, your installer should verify the panel's Voc and Isc values from the official datasheet to ensure safe and efficient operation.
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