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Solaria Brand review

Solaria PowerXT-420C-BD

420 Wp Monocrystalline
ComparePV verdict

Middle of its segment, weak in heat

Rank 11,183 of 14,005
Compare panels Datasheet PDF
Power (Wp)
420
Typical for its class
Efficiency (%)
19.40
Weak · bottom 9%
Density (Wp/m²)
194.1
Weak · bottom 9%
Temp (%/°C)
-0.390
Weak · bottom 2%
Weight (kg)
29.0
Weak · 6.0 kg above median
Warranty (yrs)
25
Weak · bottom 18%

The Solaria PowerXT Commercial series redefines performance standards through the use of advanced shingled cells technology. The elimination of traditional busbars and gaps between cells allows for maximum utilization of the available module surface area for energy generation. Thanks to a unique production process, these panels offer significantly more power per square meter than standard solutions, making them an ideal choice for investments with limited roof space. The Pure Black architecture not only provides an elegant, uniform appearance, but also improves thermal parameters and reduces the risk of micro-cracks. An innovative approach to current collection minimizes transmission losses and increases resistance to partial shading, which directly translates into a higher energy yield in difficult installation conditions. These products have been designed with durability in mind, eliminating typical points of mechanical failure found in conventional modules. By choosing the PowerXT Commercial series, investors receive a solution combining maximum power density with exceptional aesthetics, which sets these panels apart from mass-market competition. This is the optimal choice for demanding commercial projects, where every watt of power and reliability over decades of operation matter.

Ranking

6,930 panels in the 320-520 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 19.40% 21.50% Weak · bottom 9% 12,735
Power density 194.1 215.0 Weak · bottom 9% 12,726
Temperature coefficient -0.390 -0.300 Weak · bottom 2% 13,579
Weight per kWp 69.0 53.0 Weak · bottom 5% 13,359
Performance warranty 25 yrs 30 yrs Weak · bottom 18% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Commercial and shaded-installations.

Not ideal for

Hot climates, weight-limited structures and tight roof space.

Watch-outs
-0.390 %/°C temperature coefficient

Bottom 2% of the 320-520 W band, against a median of -0.300. Ranked 13,579th in the whole database.

69.0 kg per kWp

Bottom 5% of the 320-520 W band, against a median of 53.0. Ranked 13,359th in the whole database.

19.40% module efficiency

Bottom 9% of the 320-520 W band, against a median of 21.50%. Ranked 12,735th in the whole database.

Notes from the database
  • At 19.4% efficiency, this panel is 2.4pp below the database median of 21.8%
  • 194.1 W/m² power density is 24.0 W/m² below database median (218.1 W/m²) - requires larger installation area
  • Temperature coefficient of -0.39%/°C is 0.09pp worse than database median (-0.30%/°C) - higher losses in summer heat
  • Weight of 29.0 kg is 2.5 kg above database median (26.5 kg) - verify structural support
  • Ranked #12735 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 420 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.40 % Weak Segment median 21.50%
Vmpp · Impp 39.10 V · 10.77 A Operating point at max power
Voc · Isc 47.40 V · 11.33 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1939×1116×40 mm · 2.16 m² of roof
Weight 29.0 kg Weak Weak · 6.0 kg above median
Coefficient Pmax -0.390 %/°C Weak bottom 2% of its segment
Coefficient Voc · Isc -0.290 · 0.040 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 25 years Weak bottom 18% · median 30 yrs

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
-0.390 %/°C against a segment median of -0.300
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solaria Solaria PowerXT-420C-BD 420 W 19.40% -0.390 29.0 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg Cooler, lighter, +4.4 pp
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg Cooler, lighter, +4.4 pp
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg Cooler, +4.3 pp, +15 yr warranty
AIKO-A470-MAH54Mb 470 W 23.60% -0.260 21.5 kg Cooler, lighter, +4.2 pp
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg Cooler, lighter, +4.2 pp
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg Cooler, lighter, +4.2 pp
Solaria PowerXT-410C-BD 410 W 18.90% -0.390 29.0 kg -10 W, -0.5 pp
Solaria PowerXT-430C-PD 430 W 19.80% -0.390 29.0 kg +10 W, +0.4 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +140 W, cooler, +5.4 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +135 W, cooler, +5.2 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +130 W, cooler, +5.0 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +120 W, cooler, +5.0 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +120 W, cooler, +5.0 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +125 W, cooler, +4.9 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +125 W, cooler, +4.8 pp

Found 4 panels of the same or similar size to this one, within ±10 mm. See them here Found 525 panels of the same or similar size to this one, within ±25 mm. See them here Found 1298 panels of the same or similar size to this one, within ±50 mm. See them here Found 1476 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is shingled cell technology in Solaria PowerXT Commercial panels and why does it matter?
Shingled cell technology eliminates traditional busbars and gaps between cells — cells overlap like roof shingles, maximizing the module's active surface area. This results in higher energy yield per square meter, better resistance to partial shading, and reduced risk of microcracks. The PowerXT Commercial series reaches up to 430 Wp with efficiency exceeding 20%, making it competitive even against newer half-cut module designs.
What warranty does the Solaria PowerXT Commercial series carry?
The Solaria PowerXT Commercial series comes with a 25-year product warranty and a 25-year power output warranty. The manufacturer guarantees both the absence of manufacturing defects and the maintenance of a specified efficiency level for a full quarter century — one of the longest warranty standards available in the photovoltaic module market.
Is the Solaria PowerXT Commercial series still available for purchase?
The Solaria PowerXT Commercial series has been discontinued. The company underwent major restructuring — Complete Solaria acquired the brand's assets, and the shingled cell technology patents were sold to Maxeon. New orders are no longer fulfilled by the manufacturer; limited stock may occasionally appear through distributors, but availability is highly uncertain.
What are the dimensions and weight of the Solaria PowerXT Commercial 430W module — is it suitable for a typical commercial rooftop?
The Solaria PowerXT Commercial 430W panel measures 1957×1076×35 mm and weighs approximately 21.3 kg. This is a relatively compact form factor for a 430 Wp module, making transport and installation easier on both flat and pitched commercial rooftops. The smaller footprint also provides greater layout flexibility on roofs with chimneys, skylights, or antennas.
How do Solaria PowerXT Commercial panels perform under partial shading in a commercial installation?
Thanks to the shingled cell architecture and optimized current flow path, the PowerXT Commercial series is significantly more resistant to partial shading than conventional modules with full cells and busbars. Shading part of the module does not cause as drastic a power drop across the entire string — a critical advantage for commercial installations with multiple roof obstructions.
Are Solaria PowerXT Commercial panels bifacial?
No — the Solaria PowerXT Commercial series is a monofacial (single-sided) panel. Electricity is generated exclusively through the front active surface of the module. The Pure Black architecture with a black backsheet provides a sleek, uniform aesthetic for the installation, but the module does not harvest additional energy from albedo light reflected off the ground.
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