--- title: "Maxeon SPR-MAX3-370-COM 370W Solar Panel - Specs & Review | ComparePV" description: "Maxeon SPR-MAX3-370-COM 370W solar panel. Specs: 20.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/maxeon-spr-max3-370-com" updated: 2026-09-11 --- # Maxeon SPR-MAX3-370-COM Middle of its segment, modest efficiency 113 panels in the segment Back Contact 270-470 W ## Identity - **Manufacturer:** Maxeon - **Model:** SPR-MAX3-370-COM - **Series:** Maxeon 3 COM - **Rated power:** 370 W - **Cell technology:** Back Contact ## How it compares Compared against segment Back Contact 270-470 W (113 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 370 W | 440 W | Weak - bottom 11% | | | Module efficiency | 20.90% | 22.50% | Weak - bottom 7% | 10,072 | | Power density | 209.3 | 225.2 | Weak - bottom 7% | 9,991 | | Temperature coefficient | -0.270 | -0.290 | Typical | 1,280 | | Weight (kg) | 19.0 kg | 20.9 kg | Weak - bottom 20% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.90% | 22.50% | Weak - bottom 7% | 10,072 | | Power density | 209.3 | 225.2 | Weak - bottom 7% | 9,991 | | Temperature coefficient | -0.270 | -0.290 | Typical | 1,280 | | Weight per kWp | 51.4 | 47.8 | Weak - bottom 20% | 4,718 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 9,798 | ### Watch out for - **20.90% module efficiency** - Bottom 7% of the Back Contact 270-470 W segment, against a median of 22.50%. Ranked 10,072nd in the whole database. - **209.3 watts per square metre** - Bottom 7% of the Back Contact 270-470 W segment, against a median of 225.2. Ranked 9,991st in the whole database. - **25 year performance warranty** - Bottom 19% of the Back Contact 270-470 W segment, against a median of 30 yrs. - **Best for:** Commercial and hot-climate. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 370 W - **Efficiency:** 20.90 % - **Voltage at Pmax (Vmp):** 61.80 V - **Current at Pmax (Imp):** 5.99 A - **Open-circuit voltage (Voc):** 74.70 V - **Short-circuit current (Isc):** 6.52 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.270 %/degC - **Temperature coefficient of Voc:** -0.236 %/degC - **Temperature coefficient of Isc:** 0.058 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** Back Contact - **Cell count:** 104 ### Physical - **Length:** 1690 mm - **Width:** 1046 mm - **Thickness:** 40 mm - **Weight:** 19.0 kg - **Area:** 1.77 m2 - **Power density:** 209.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 92.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.25 % - **Output after 30 years:** 336 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10072 of 14005 | | Power density | 9991 of 14005 | | Temperature coefficient | 1280 of 14005 | | Weight | 4718 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Highest efficiency in the comparable segment** - At 20.9% efficiency, this module outperforms all listed peer comparables at the same 370 Wp power class — Solitek SOLID Bifacial (19.57%), Solarwatt vision GM 3.0 (19.9%), and Selfa SV120M.3.2 (20.3%). This translates into higher energy yield from limited roof area, a key advantage for commercial installations. - **IBC cell technology (Maxeon Gen 3, Back Contact)** - Contacts moved to the rear of the cell eliminate front-side busbars and grid lines, reducing shading losses from conductors and improving light utilization across the entire active surface. This premium architecture is rarely found among tier-2/tier-3 manufacturers. - **Matching 25-year product and power warranty** - The manufacturer covers both the product (materials/workmanship) and power output with a 25-year warranty — most panels on the market have a shorter product warranty (10-15 years) than the power warranty. Aligning both periods signals strong manufacturer confidence in long-term durability. - **Tier-1 bankable, microcrack- and hot-spot-resistant design** - Maxeon (headquartered in Singapore) is listed as a tier-1/bankable manufacturer, easing project financing for commercial installations. The IBC cell architecture reduces the risk of hot spots and microcracks, resulting in more stable performance under high temperatures and the partial shading common on commercial rooftops. ## Cons - **No bifacial variant available** - The series does not offer a bifacial option, whereas the comparable peer Solitek SOLID Bifacial at the same 370 Wp power class captures additional rear-side gain (typically 5-15% depending on albedo and mounting configuration). For elevated or ground-mount installations, this represents real forgone energy potential. - **Premium pricing above segment median** - Maxeon maintains premium pricing power relative to tier-1 Chinese manufacturers and local brands (e.g., Solitek, Solarwatt, Selfa) despite market price pressure. The higher efficiency partly offsets this cost, but it lengthens the simple payback period compared with cheaper modules of similar power output. ## About this series The Maxeon Maxeon 3 COM series comprises modules designed for commercial installations, where maximizing power output from a limited area and predictable performance over many years are key. The core of the design consists of **monocrystalline IBC (Maxeon Gen 3) cells** with contacts positioned on the back, which minimize losses due to shading by wires and improve light utilization across the entire active surface. In practice, this series addresses common roofing issues: variable weather, high temperatures, and occasional shading from mechanical equipment. The panels are optimized for **high conversion efficiency even in low-light conditions** (mornings, evenings, cloudy days) and for stable performance in hot weather. The design emphasizes **resistance to micro-cracks and material fatigue**, while the electrical architecture aims to minimize the risk of hot spots. This is the ideal choice for businesses, warehouses, and service facilities that prioritize **long warranties and long-term profitability** over simply low purchase prices. ## Notable figures - At 20.9% efficiency, this panel is on par with typical \*\*Back Contact 0-400W\*\* modules - At 209.3 W/m² power density, roof space requirements are typical for \*\*Back Contact 0-400W\*\* panels - At -0.27%/°C, hot weather performance is typical for \*\*Back Contact 0-400W\*\* panels - Ranked #10072 out of 14005 panels for efficiency in the database ## Questions ### What is Back Contact (IBC) cell technology in the Maxeon 3 COM panels and why does it matter for commercial installations? In IBC (Interdigitated Back Contact) cells, all electrical contacts are moved to the rear of the cell. This leaves the entire front surface free from busbar shading, delivering higher efficiency — the Maxeon 3 COM series reaches up to 22.6%. On a commercial rooftop, this translates to more energy output from the same area compared to conventional monocrystalline PERC modules. ### What warranty comes with the Maxeon 3 COM solar panels and what does it cover? The Maxeon 3 COM series carries a 25-year product warranty covering defects in materials and workmanship, as well as a 25-year power output warranty. This is one of the longer standards in the commercial segment. Maxeon Solar Technologies is a Tier 1 manufacturer headquartered in Singapore, which reduces the risk of warranty support gaps over the long term. ### Do Maxeon 3 COM panels lose significant power on hot days on a dark industrial rooftop? The IBC Gen 3 cell technology features a low temperature coefficient of approximately -0.27%/°C (Pmax). This means that at a panel temperature of 75°C — typical in summer on a dark rooftop — power losses are notably lower than with standard PERC cells, which typically range from -0.35 to -0.40%/°C. This is a key advantage for warehouses and industrial facilities with high roof exposure. ### How does the Maxeon 3 COM series perform in cloudy weather or during low-irradiance morning and evening hours? The IBC architecture eliminates front-side busbar shading and the high quality of Gen 3 cells results in better energy harvest at low irradiance levels — mornings, evenings, and partially overcast days. In climates like Poland's, where a significant share of annual energy production comes from such conditions rather than peak sunshine hours, this low-light advantage meaningfully increases total annual yield. ### Are the Maxeon 3 COM 370 W panels suitable for a flat rooftop on a warehouse or logistics center? Yes, the Maxeon 3 COM series is specifically designed for commercial installations — warehouses, manufacturing facilities, and service buildings. The approximate dimensions of 1690 × 1046 mm and weight of around 19 kg are compatible with standard flat-roof mounting systems. Resistance to microcracks and stable performance in heat reduce the risk of yield degradation throughout the full 25-year warranty period. ### How do Maxeon 3 COM panels compare to lower-cost monocrystalline PERC modules? The key differences are cell technology (IBC Back Contact vs. PERC), higher efficiency (up to 22.6% vs. typically 21–21.5% for PERC), a lower temperature coefficient, and greater long-term degradation resistance. The upfront cost of Maxeon 3 COM panels is higher, but on roof areas where space is limited and long-term LCOE is the priority, the difference often pays back within a few years through higher annual energy production. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/sp-mst-MAX3-400-390-370-COM-ds-en-a4-mc4-532420-d5a5b71a0ba3.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | -40 W, lighter, +2.2 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | -40 W, lighter, +2.2 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -50 W, +2.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -30 W, +2.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +2.1 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, +2.1 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 | +30 W, +2.1 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 | +30 W, +2.1 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, +2.1 pp, +5 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +30 W, +1.7 pp, +15 yr warranty | | [Maxeon SPR-MAX3-355-BLK](https://comparepv.com/panel/maxeon-spr-max3-355-blk) | 355 W | -15 W, -0.8 pp, +15 yr warranty | | [Maxeon SPR-MAX3-375-BLK](https://comparepv.com/panel/maxeon-spr-max3-375-blk) | 375 W | +0.3 pp, +15 yr warranty | | [Maxeon SPR-MAX3-380-COM](https://comparepv.com/panel/maxeon-spr-max3-380-com) | 380 W | +10 W, +0.6 pp, +15 yr warranty | | [Maxeon SPR-MAX3-390-COM](https://comparepv.com/panel/maxeon-spr-max3-390-com) | 390 W | +20 W, +1.2 pp, +15 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +125 W, +3.9 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +120 W, +3.6 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/maxeon-spr-max3-370-com Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.