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Solaria Brand review

SP310RHM6-54L

310 Wp PERC
ComparePV verdict

Strong in heat, modest efficiency

Rank 13,577 of 14,005
Compare panels Datasheet PDF
Power (Wp)
310
Weak · bottom 17%
Efficiency (%)
15.87
Weak · bottom 5%
Density (Wp/m²)
159.0
Weak · bottom 6%
Temp (%/°C)
-0.350
Strong · top 14%
Weight (kg)
21.0
Typical · median 19.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

Solaria PowerXT 54L photovoltaic panels redefine standards of aesthetics and efficiency through the use of advanced shingled cell technology. This solution completely eliminates traditional busbars and unused gaps between cells, which not only translates into an elegant, uniform appearance but, above all, maximizes the active area of the module. Thanks to the unique parallel connection architecture, this series perfectly handles challenges such as shade resistance, significantly minimizing energy losses in difficult installation conditions. It is an ideal choice for demanding investors with limited roof space who do not want to compromise on maximum energy yields. The absence of visible soldered connections drastically increases the mechanical reliability of the entire structure, effectively protecting it against the formation of dangerous micro-cracks during long-term operation. Solaria PowerXT 54L stands out from the competition with an uncompromising all-black design that harmoniously blends with the modern architecture of residential buildings. By choosing these modules, you gain the assurance of longevity and the highest power density from every square meter of roofing, making them one of the most prestigious and cost-effective investments in the premium segment for home photovoltaic systems. The innovative design also ensures better thermal stability, which is crucial during hot days.

Ranking

286 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 15.87% 19.00% Weak · bottom 5% 13,671
Power density 159.0 190.0 Weak · bottom 6% 13,658
Temperature coefficient -0.350 -0.360 Strong · top 14% 10,419
Weight per kWp 67.7 60.0 Typical 13,274
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 2 caution
Best for

Hot roofs and southern climates.

Not ideal for

Tight roof space and roofs where every square metre has to count.

Strengths
-0.350 %/°C temperature coefficient

Top 14% of the PERC 300-350 W segment, against a median of -0.360.

Watch-outs
15.87% module efficiency

Bottom 5% of the PERC 300-350 W segment, against a median of 19.00%. Ranked 13,671st in the whole database.

159.0 watts per square metre

Bottom 6% of the PERC 300-350 W segment, against a median of 190.0. Ranked 13,658th in the whole database.

Notes from the database
  • At 15.9% efficiency, this panel is 3.6pp below the PERC 0-400W median of 19.4%
  • At 159.0 W/m², this panel generates 35.4 W/m² less per unit area than PERC 0-400W median (194.4 W/m²)
  • At -0.35%/°C, hot weather performance is typical for PERC 0-400W panels
  • Ranked #13671 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 310 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 15.87 % Weak Segment median 19.00%
Vmpp · Impp 32.22 V · 9.68 A Operating point at max power
Voc · Isc 37.90 V · 10.27 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1721×1133×30 mm · 1.95 m² of roof
Weight 21.0 kg Typical Typical · median 19.0 kg
Cells 108 · PERC Monocrystalline
Coefficient Pmax -0.350 %/°C Strong top 14% of its segment
Coefficient Voc · Isc -0.275 · 0.045 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 254 W guaranteed
Degradation 2.00 % First year

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
-0.350 %/°C against a segment median of -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solaria SP310RHM6-54L 310 W 15.87% -0.350 21.0 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +7.5 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +7.5 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg Cooler, lighter, +7.4 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +7.3 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +7.3 pp
GKA182M285W 285 W 23.00% - 10.8 kg Lighter, +7.1 pp, +5 yr warranty
GKA182M260W 260 W 23.00% - 10.8 kg -50 W, lighter, +7.1 pp
GKA182M270W 270 W 23.00% - 10.8 kg Lighter, +7.1 pp, +5 yr warranty
GKA182M300W 300 W 23.00% - 16.2 kg Lighter, +7.1 pp, +5 yr warranty
SP350YHM6-54L 350 W 17.92% -0.350 21.0 kg +40 W, +2.1 pp
SP370GHM6-54L 370 W 18.94% -0.350 21.0 kg +60 W, +3.1 pp
SP380BHM6-54L 380 W 19.45% -0.350 21.0 kg +70 W, +3.6 pp
Solaria PowerX-390R 390 W 20.00% -0.360 22.1 kg +80 W, heavier, +4.1 pp
Solaria PowerX-395R 395 W 20.20% -0.360 22.1 kg +85 W, heavier, +4.3 pp
Solaria PowerX-400R 400 W 20.50% -0.360 22.1 kg +90 W, heavier, +4.6 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +200 W, cooler, +9.1 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 3978 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the Solaria PowerXT 54L come with?
The Solaria PowerXT 54L carries a 12-year product warranty covering material and workmanship defects. In addition, Solaria provides a 25-year linear power output warranty, guaranteeing the module will produce a defined minimum percentage of its rated 380 Wp throughout that period. Both coverages are consistent with premium-tier residential solar standards and reflect the long-term reliability of the shingled cell design.
How does the Solaria PowerXT 54L handle partial shading from a chimney or antenna?
The shingled cell architecture in the Solaria PowerXT 54L connects cells in parallel strings, so shading one section of the module does not dramatically cut the output of the entire panel. According to manufacturer data, this design delivers up to 40% better performance under partial shading compared to conventional busbar-based panels, making it well-suited for residential rooftops with chimneys, dormers, or antennas.
What are PERC shingled cells and why does Solaria use them in the PowerXT 54L?
Shingled cells are PERC solar cells sliced into thin strips and overlapped like roof shingles, bonded with conductive adhesive instead of soldered busbars. In the Solaria PowerXT 54L, this eliminates inter-cell gaps, maximizes the active front-side area of the module, and significantly reduces the risk of microcracks since no soldering is involved. The resulting assembly handles mechanical stress and thermal cycling much better over the full 25-year power warranty period.
What is the peak power of the Solaria PowerXT 54L and is it a good fit for a small roof?
The Solaria PowerXT 54L is rated at 380 Wp peak. By eliminating busbars and inter-cell gaps, the module achieves high power density, meaning more watts per square meter of roof area. This makes it an ideal choice for homeowners with limited roof space who want to maximize energy yield without expanding the number of modules in their system or rethinking the mounting structure.
Does the all-black design of the Solaria PowerXT 54L affect operating temperature and efficiency?
The all-black surface can slightly raise the module's operating temperature compared to standard panels, but the Solaria PowerXT 54L is engineered for thermal stability. The shingled cell construction improves heat management by removing soldered busbars, which reduces mechanical stress during thermal cycling. The aesthetic benefit of the all-black finish, which complements modern residential architecture, does not represent a meaningful efficiency trade-off in real-world conditions.
Is the Solaria PowerXT 54L a bifacial panel — does it generate power from both sides?
No, the Solaria PowerXT 54L is a monofacial module — electricity is generated only from the front side. The panel uses an opaque backsheet, so it does not collect reflected irradiance from the ground or rooftop surface. This is offset by the shingled cell layout, which maximizes the front-side active area to deliver 380 Wp from a compact, uniform all-black module footprint.
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