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Solaria Brand review

PowerXT-355R-AC

355 Wp Monocrystalline
ComparePV verdict

Middle of its segment, heavy for its output

Rank 12,098 of 14,005
Compare panels Datasheet PDF
Power (Wp)
355
Weak · bottom 16%
Efficiency (%)
19.60
Weak · bottom 20%
Density (Wp/m²)
196.2
Weak · bottom 21%
Temp (%/°C)
-
Not published
Weight (kg)
22.0
Weak · bottom 17%
Warranty (yrs)
25
Weak · bottom 22%

Solaria PowerXT | AC Panel series consists of AC modules with a factory-integrated Enphase IQ microinverter, making installation simpler and more predictable - eliminating the need to select individual inverters and limiting DC cabling. A key advantage is the modular architecture (microinverter on each panel), which improves performance in situations with partial shading, different roof orientations, or uneven exposure. It also features module-level switching, which is important from a safety and design perspective.

PowerXT AC stands out due to its high-density cell connection technology, which aims to maximize the active surface area and minimize losses typical of standard modules, as well as its consistent Pure Black aesthetics, which is important for premium installations on residential rooftops. Integrated monitoring facilitates maintenance and quick diagnosis of production declines.

This solution is for installers who want to shorten assembly time and reduce the risk of errors, as well as for investors who expect stable yields on roofs with complex geometries, including phased expansion projects.

Ranking

4,944 panels in the 255-455 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 19.60% 20.80% Weak · bottom 20% 12,589
Power density 196.2 207.9 Weak · bottom 21% 12,577
Temperature coefficient - -0.335 Not published 13,924
Weight per kWp 62.0 54.2 Weak · bottom 17% 12,718
Performance warranty 25 yrs 30 yrs Weak · bottom 22% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential and shaded-installations.

Not ideal for

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

Watch-outs
62.0 kg per kWp

Bottom 17% of the 255-455 W band, against a median of 54.2.

19.60% module efficiency

Bottom 20% of the 255-455 W band, against a median of 20.80%.

196.2 watts per square metre

Bottom 21% of the 255-455 W band, against a median of 207.9.

Notes from the database
  • Module efficiency of 19.6% is 2.2pp below average for database panels (median: 21.8%)
  • Power density of 196.2 W/m² is 21.9 W/m² below database median (218.1 W/m²) - needs more roof space
  • Weight of 22.0 kg (4.5 kg below database median of 26.5 kg) allows easier transport and roof mounting
  • In the top 90% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 355 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.60 % Weak Segment median 20.80%
Vmpp · Impp 39.10 V · 9.09 A Operating point at max power
Voc · Isc 47.40 V · 9.53 A Sizes the string length
Dimensions 1621×1116×40 mm · 1.81 m² of roof
Weight 22.0 kg Weak Weak · bottom 17%
Product warranty 25 years Hardware defects only
Performance warranty 25 years Weak bottom 22% · 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
-
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solaria PowerXT-355R-AC 355 W 19.60% - 22.0 kg You are here
NS-330MH-80 330 W 23.15% -0.290 15.0 kg -25 W, lighter, +3.5 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg -25 W, lighter, +3.5 pp
GKA210M320W 320 W 23.00% - 16.2 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M340W 340 W 23.00% - 16.2 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +3.4 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +45 W, +3.4 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +45 W, +3.4 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +3.4 pp, +5 yr warranty
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg +45 W, +3.0 pp, +15 yr warranty
Solaria PowerXT®-360R-PD 360 W 19.90% -0.390 21.0 kg Lighter, +0.3 pp
Solaria PowerXT-365R-PD 365 W 20.20% -0.390 21.0 kg +10 W, lighter, +0.6 pp
Solaria PowerXT-370R-PD 370 W 20.50% -0.390 21.0 kg +15 W, lighter, +0.9 pp
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +85 W, +3.5 pp, +5 yr warranty
SPV445-TM10-108 445 W 22.83% -0.300 21.5 kg +90 W, +3.2 pp, +5 yr warranty
LX-435M/182-108+ GG 435 W 22.81% -0.240 23.6 kg +80 W, +3.2 pp, +5 yr warranty

Found 8 panels of the same or similar size to this one, within ±10 mm. See them here Found 13 panels of the same or similar size to this one, within ±25 mm. See them here Found 20 panels of the same or similar size to this one, within ±50 mm. See them here Found 318 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Solaria PowerXT AC Panel series still available for purchase?
The Solaria PowerXT AC Panel series has been discontinued and is no longer available through regular distribution channels. Some solar retailers or wholesalers may still have remaining stock, but no new shipments from the manufacturer should be expected. Buyers interested in an AC module solution should consider currently produced alternatives with an integrated Enphase IQ microinverter from other manufacturers or newer Solaria series.
How does the Solaria PowerXT AC Panel differ from a standard solar panel?
The key difference is the factory-integrated Enphase IQ microinverter mounted directly on the module. Each panel independently converts DC to AC power, eliminating the need to select and install a separate string inverter. Installation is faster, and a failure in one panel does not affect the output of the others. The module delivers a peak power of 365 Wp.
How does the Solaria PowerXT AC Panel perform under partial shading?
The modular MPPT architecture — one microinverter per panel — means shading on a single module does not reduce the output of the rest of the array, which is a key advantage over string-inverter systems. In addition, the high-density cell interconnection technology (parallel sub-string wiring) minimizes internal shading losses within the panel itself. This solution is especially recommended for roofs with dormers, chimneys, or multiple orientations.
What warranty does Solaria offer on the PowerXT AC Panel series?
Solaria provides a 25-year product warranty (covering material and manufacturing defects) and a 25-year power output warranty. The power warranty covers both the PV module and the integrated Enphase IQ microinverter, simplifying any warranty claims. These are premium-tier terms, on par with leading European manufacturers.
Does the Solaria PowerXT AC Panel comply with Rapid Shutdown requirements?
Yes. The integrated Enphase IQ microinverter provides module-level shutdown, meeting Rapid Shutdown requirements under NEC 2017/2020 (commonly enforced in the US) and European PV installation safety guidelines. In case of fire or emergency response, DC voltage is reduced to a safe level at the panel itself, with no need for additional MLPE devices.
Is the Solaria PowerXT AC Panel a good fit for a premium residential installation on a dark roof?
Yes, this series was designed with aesthetics in mind — the all-black Pure Black finish (black frame, black backsheet, black cells) blends seamlessly with dark roof tiles or shingles. The 365 Wp output in a compact form factor makes efficient use of roof area. The built-in per-panel monitoring makes service and fault diagnosis straightforward, which is a strong selling point for demanding homeowners.
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