--- title: "Solaria PowerXT-355R-AC 355W Solar Panel - Specs & Review | ComparePV" description: "Solaria PowerXT-355R-AC 355W solar panel. Specs: 19.60% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/solaria-powerxt-355r-ac" updated: 2026-09-11 --- # Solaria PowerXT-355R-AC Middle of its segment, heavy for its output 4,944 panels in the 255-455 W band, all technologies ## Identity - **Manufacturer:** Solaria - **Model:** PowerXT-355R-AC - **Series:** Solaria PowerXT \| AC Panel - **Rated power:** 355 W - **Cell technology:** Monocrystalline ## How it compares Compared against 255-455 W band, all technologies (4944 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 355 W | 415 W | Weak - bottom 16% | | | 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 | | | | Weight (kg) | 22.0 kg | 21.6 kg | Weak - bottom 17% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 22% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | 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 | | | | Weight per kWp | 62.0 | 54.2 | Weak - bottom 17% | 12,718 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 22% | 9,798 | ### Watch out for - **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. - **Best for:** Residential and shaded-installations. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 355 W - **Efficiency:** 19.60 % - **Voltage at Pmax (Vmp):** 39.10 V - **Current at Pmax (Imp):** 9.09 A - **Open-circuit voltage (Voc):** 47.40 V - **Short-circuit current (Isc):** 9.53 A ### Temperature ### Cell and construction - **Cell type:** Monocrystalline ### Physical - **Length:** 1621 mm - **Width:** 1116 mm - **Thickness:** 40 mm - **Weight:** 22.0 kg - **Area:** 1.81 m2 - **Power density:** 196.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12589 of 14005 | | Power density | 12577 of 14005 | | Temperature coefficient | 13924 of 14005 | | Weight | 12718 of 14005 | | Warranty | 9798 of 14005 | ## About this series 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. ## Notable figures - 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 ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datasheet-PowerXT-Resi-AC-Rev-04-b302048f67d1.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | -25 W, lighter, +3.5 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | -25 W, lighter, +3.5 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | Lighter, +3.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +3.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +3.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +3.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +45 W, +3.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +45 W, +3.4 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +3.4 pp, +5 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +45 W, +3.0 pp, +15 yr warranty | | [Solaria Solaria PowerXT®-360R-PD](https://comparepv.com/panel/solaria-solaria-powerxt-360r-pd) | 360 W | Lighter, +0.3 pp | | [Solaria Solaria PowerXT-365R-PD](https://comparepv.com/panel/solaria-solaria-powerxt-365r-pd) | 365 W | +10 W, lighter, +0.6 pp | | [Solaria Solaria PowerXT-370R-PD](https://comparepv.com/panel/solaria-solaria-powerxt-370r-pd) | 370 W | +15 W, lighter, +0.9 pp | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | +85 W, +3.5 pp, +5 yr warranty | | [SpolarPV SPV445-TM10-108](https://comparepv.com/panel/spolarpv-spv445-tm10-108) | 445 W | +90 W, +3.2 pp, +5 yr warranty | | [Luxor Solar LX-435M/182-108+ GG](https://comparepv.com/panel/luxor-solar-lx-435m-182-108-gg-1) | 435 W | +80 W, +3.2 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/solaria-powerxt-355r-ac Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.