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Solaria Brand review

Solaria PowerX-400R

400 Wp Monocrystalline
ComparePV verdict

Middle of its segment, weak in heat

Rank 10,732 of 14,005
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 24%
Efficiency (%)
20.50
Typical · median 21.30%
Density (Wp/m²)
204.7
Typical · median 212.6
Temp (%/°C)
-0.360
Weak · bottom 11%
Weight (kg)
22.1
Typical · median 22.5 kg
Warranty (yrs)
25
Weak · bottom 19%

Solaria PowerX Advantage Series panels represent a breakthrough in roof space optimization thanks to the use of advanced cell interconnection technology that eliminates unnecessary gaps and increases the active energy-generating surface. This series solves the problem of limited installation space by offering maximum power density, which translates into significantly higher yields from every square meter of the installation. Thanks to their unique internal architecture, the modules exhibit exceptional shade tolerance, which is crucial for complex roof surfaces with chimneys or dormers. The use of large M10-type cells combined with an innovative layout ensures excellent performance even in challenging lighting conditions. For investors seeking uncompromising aesthetics, the Advantage series offers an elegant all-black design that blends perfectly with modern architecture, completely eliminating visible silver connections and busbars. This solution is dedicated primarily to demanding individual customers and companies that focus on the highest operating standards of the equipment. Compared to the competition, Solaria stands out with a reduced risk of hot-spot formation and increased mechanical resistance to extreme weather conditions, which guarantees stable electricity production for decades and a significantly faster return on investment in the photovoltaic system.

Ranking

6,519 panels in the 300-500 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 20.50% 21.30% Typical 11,308
Power density 204.7 212.6 Typical 11,499
Temperature coefficient -0.360 -0.300 Weak · bottom 11% 12,345
Weight per kWp 55.2 53.2 Typical 9,691
Performance warranty 25 yrs 30 yrs Weak · bottom 19% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 2 caution
Best for

Residential, shaded-installations and BIPV.

Not ideal for

Hot climates and owners who want a long output guarantee.

Watch-outs
-0.360 %/°C temperature coefficient

Bottom 11% of the 300-500 W band, against a median of -0.300.

25 year performance warranty

Bottom 19% of the 300-500 W band, against a median of 30 yrs.

Notes from the database
  • At 20.5% efficiency, this panel is 1.3pp below the database median of 21.8%
  • Power density of 204.7 W/m² is 13.4 W/m² below database median (218.1 W/m²) - needs more roof space
  • Temperature coefficient of -0.36%/°C is 0.06pp worse than database median (-0.30%/°C) - higher losses in summer heat
  • At 22.1 kg, this panel is 4.4 kg lighter than database median (26.5 kg) - easier handling during installation
  • Ranked #11308 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.50 % Typical Segment median 21.30%
Vmpp · Impp 31.00 V · 12.90 A Operating point at max power
Voc · Isc 37.30 V · 13.68 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1723×1134×35 mm · 1.95 m² of roof
Weight 22.1 kg Typical Typical · median 22.5 kg
Coefficient Pmax -0.360 %/°C Weak bottom 11% of its segment
Coefficient Voc · Isc -0.280 · 0.048 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 25 years Weak bottom 19% · median 30 yrs
End-of-warranty output 86.0 % Equals 334 W guaranteed
Degradation 2.00 → 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
-0.360 %/°C against a segment median of -0.300
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solaria Solaria PowerX-400R 400 W 20.50% -0.360 22.1 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg Cooler, +2.6 pp, +5 yr warranty
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, cooler, +2.6 pp
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, cooler, +2.5 pp
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, cooler, +2.5 pp
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, cooler, +2.5 pp
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, cooler, +2.5 pp
SP310RHM6-54L 310 W 15.87% -0.350 21.0 kg -90 W, lighter, -4.6 pp
SP350YHM6-54L 350 W 17.92% -0.350 21.0 kg -50 W, lighter, -2.6 pp
SP370GHM6-54L 370 W 18.94% -0.350 21.0 kg -30 W, lighter, -1.6 pp
SP380BHM6-54L 380 W 19.45% -0.350 21.0 kg -20 W, lighter, -1.1 pp
Solaria PowerX-390R 390 W 20.00% -0.360 22.1 kg -10 W, -0.5 pp
Solaria PowerX-395R 395 W 20.20% -0.360 22.1 kg -0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +110 W, cooler, +4.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +95 W, cooler, +4.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +105 W, cooler, +4.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +90 W, cooler, +4.0 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1917 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
Are Solaria PowerX Advantage Series panels suitable for roofs with chimneys and dormers?
Yes, the PowerX Advantage Series is specifically recommended for complex roof layouts. Its innovative parallel-connected sub-string architecture dramatically reduces shading losses — a chimney or dormer shade only deactivates the shaded cell segment rather than the entire module. This makes the system generate significantly more energy on a challenging roof compared to conventional panels.
What warranty does the Solaria PowerX Advantage Series carry and what does it cover?
The Solaria PowerX Advantage Series comes with a 25-year product warranty covering material defects and workmanship, plus a 25-year power output warranty guaranteeing at least 86% of the nominal rated power at end of term. Warranties are backed by Solaria Corporation, headquartered in Spain and subject to European quality standards.
Is the Solaria PowerX Advantage Series a bifacial panel?
No — the PowerX Advantage Series is a monofacial module. Energy is harvested from the front side only, which simplifies racking and mounting requirements. Rather than bifacial technology, Solaria maximizes front-side active area through advanced M10 cell dicing that eliminates gaps between cells, achieving module efficiency of approximately 20.5%.
How many watts does a Solaria PowerX Advantage Series panel produce, and is that enough for a typical home?
Each PowerX Advantage Series module delivers up to 400 Wp at roughly 20.5% module efficiency. A typical single-family home consuming 4,000–5,000 kWh per year usually requires 10–14 panels (a 4–5.6 kWp system). The high power density means fewer modules and less roof area are needed compared to lower-efficiency alternatives, reducing balance-of-system (BoS) costs.
Why are the Solaria PowerX Advantage Series panels all-black, and does the dark backsheet reduce output?
The Advantage Series is produced exclusively in an all-black aesthetic — black cells, black frame, and blacked-out busbars create a uniform appearance valued in modern architecture. A dark backsheet can slightly raise operating cell temperature, but Solaria has optimized the module design to minimize that effect. In practice, the annual energy yield difference versus a white-backsheet panel is negligible.
How does the Solaria PowerX Advantage Series differ from standard half-cut panels on the market?
The key difference is Solaria's proprietary cell cutting and layout technology, which goes further than standard half-cut: M10 cells are diced and arranged without visible gaps, increasing active power-generating area and reducing hot-spot risk. Parallel sub-string interconnection further improves shade tolerance. Standard half-cut panels lose proportionally more power under comparable partial shading conditions.
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