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Seraphim SRP-425-BTD-HV
Seraphim Brand review

SRP-425-BTD-HV

425 Wp TOPCon Bifacial
ComparePV verdict

Solid all-round for its segment

Rank 9,896 of 14,005
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
21.76
Typical · median 22.00%
Density (Wp/m²)
217.6
Typical · median 220.2
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
21.0
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Seraphim Nebula panel series introduces a new level of quality to PV installations thanks to the use of N-TOPCon cells, which are characterized by significantly lower degradation and better efficiency than traditional solutions. It is a response to the needs of investors requiring maximum yields even on cloudy days, which is crucial in the Polish climate. A key differentiator of the series is bifacial energy generation, which, combined with a glass-glass construction, allows for additional power recovery from reflected radiation. Thanks to this, Nebula is ideal for commercial projects and ground-mounted farms where the lowest levelized cost of energy matters most. Compared to the competition, these panels offer exceptional resistance to LID and LeTID phenomena, which translates into long-term reliability and financial stability for the investment. The robust construction protects against micro-cracks, and the optimized temperature coefficient ensures high performance during summer peak sunlight periods. Choosing this series is an investment in advanced double-glass technology, which combines aesthetic design with extreme resistance to snow and wind loads, guaranteeing peace of mind for years.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.76% 22.00% Typical 7,285
Power density 217.6 220.2 Typical 7,172
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 49.4 51.4 Typical 2,909
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 0 caution
Best for

Commercial and hot-climate.

Notes from the database
  • Efficiency of 21.8% matches the TOPCon 400-450W median
  • Power density of 217.6 W/m² matches the TOPCon 400-450W median
  • Temperature coefficient of -0.29%/°C matches the TOPCon 400-450W median
  • At 21.0 kg, weight matches the TOPCon 400-450W median
  • In the top 52% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.76 % Typical Segment median 22.00%
Vmpp · Impp 32.10 V · 13.24 A Operating point at max power
Voc · Isc 38.70 V · 13.91 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×28 mm · 1.95 m² of roof
Weight 21.0 kg Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 371 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Seraphim in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 425 Wp appear here. The rest cover the whole series.

Additional Value from Linear Warranty Additional Value from Linear Warranty Whole series I-V Curve I-V Curve 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
-

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
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Seraphim SRP-425-BTD-HV 425 W 21.76% -0.290 21.0 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +50 W, +2.2 pp, +10 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +40 W, hotter, +2.0 pp
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg +50 W, cooler, +2.0 pp
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg +50 W, heavier, +2.0 pp
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg +50 W, heavier, +2.0 pp
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg +50 W, cooler, +2.0 pp
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg +50 W, cooler, +2.0 pp
SRP-395-BMD-HV 395 W 20.23% -0.340 21.5 kg Hotter, -1.5 pp, -5 yr warranty
SRP-400-BMD-BG 400 W 20.48% -0.340 24.0 kg Hotter, heavier, -1.3 pp
SRP-405-BMD-BG 405 W 20.74% -0.340 24.0 kg Hotter, heavier, -1.0 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +85 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +70 W, cooler, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +80 W, cooler, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +65 W, cooler, +2.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +75 W, cooler, +2.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +75 W, cooler, +2.7 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How do Seraphim Nebula panels differ from standard PERC panels?
The Seraphim Nebula series uses N-TOPCon cells instead of conventional PERC cells. N-TOPCon technology delivers higher efficiency (up to ~22.5%), significantly lower first-year light-induced degradation (LID), and better high-temperature performance. In practice, this means more energy generated over the system's lifetime and more stable output on overcast days — a key advantage in climates with frequent cloud cover.
How much additional energy does the bifacial Seraphim Nebula generate from its rear side?
The Seraphim Nebula (up to 440 Wp) is a bifacial module that captures reflected irradiance from the ground or rooftop surface. With sufficient albedo — such as light-colored gravel on a ground-mount system — rear-side gain can reach 5–15% additional annual yield. The bifaciality factor is approximately 80–90%, making the Nebula series particularly cost-effective for utility-scale and commercial ground-mount projects where LCOE optimization matters.
What warranty does the Seraphim Nebula carry, and what does it cover?
Seraphim provides two warranties for the Nebula series: a 15-year product warranty covering material defects and workmanship, and a 30-year linear power warranty guaranteeing at least 84.95% of rated output after 30 years of operation. Warranty claims can be handled through an authorized local distributor or directly via Seraphim's global service network.
Do Seraphim Nebula panels perform well in cloudy conditions and low temperatures?
Yes. N-TOPCon cell technology delivers superior low-light performance compared to PERC modules, capturing more energy from diffuse irradiance on overcast days. The optimized temperature coefficient reduces power losses during summer heat. The glass-glass dual-glass construction protects cells from moisture ingress and freeze-thaw cycles, adding long-term reliability in climates with heavy rainfall, cloud cover, and winter frost.
Can the glass-glass construction of the Seraphim Nebula withstand heavy snow loads?
Yes. The dual-glass structure is engineered for extreme mechanical loads. Modules of this type are typically certified for snow loads up to 5,400 Pa and wind loads up to 2,400 Pa — values that comfortably meet building code requirements in most European markets, including mountainous regions with heavy snowfall. Refer to the Seraphim Nebula datasheet for exact certified load ratings.
Is the Seraphim Nebula better suited for rooftop or ground-mount installations?
The Seraphim Nebula is versatile, performing well in both configurations. It delivers the greatest bifacial gain in ground-mount and flat-roof commercial installations, where rear-side irradiance from ground albedo is maximized. For residential pitched-roof installs, its approximately 21 kg weight and 1722 × 1134 × 28 mm dimensions are compatible with standard racking systems, keeping installation straightforward.
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