--- title: "RedSolar CETC-415M(L)/108 415W Solar Panel - Specs & Review | ComparePV" description: "RedSolar CETC-415M(L)/108 415W solar panel. Specs: 21.27% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/redsolar-cetc-415m-l-108" updated: 2026-09-11 --- # RedSolar CETC-415M(L)/108 Light for its output, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** RedSolar - **Model:** CETC-415M(L)/108 - **Series:** P series M10-PERC Ultralight - **Rated power:** 415 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 415 W | 410 W | Typical | | | Module efficiency | 21.27% | 20.60% | Strong - top 10% | 8,849 | | Power density | 212.7 | 206.2 | Strong - top 7% | 8,730 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 11.4 kg | 22.0 kg | Strong - top 3% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.27% | 20.60% | Strong - top 10% | 8,849 | | Power density | 212.7 | 206.2 | Strong - top 7% | 8,730 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 27.6 | 53.0 | Strong - top 3% | 126 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **27.6 kg per kWp** - Top 3% of the PERC 400-450 W segment, against a median of 53.0. Ranked 126th in the whole database. - **212.7 watts per square metre** - Top 7% of the PERC 400-450 W segment, against a median of 206.2. Ranked 8,730th in the whole database. - **21.27% module efficiency** - Top 10% of the PERC 400-450 W segment, against a median of 20.60%. - **Best for:** Weight-limited structures, roofs where every square metre counts and small roofs that need every watt. ## Specification ### Electrical - **Rated power (Pmax):** 415 W - **Efficiency:** 21.27 % - **Voltage at Pmax (Vmp):** 31.16 V - **Current at Pmax (Imp):** 13.32 A - **Open-circuit voltage (Voc):** 37.17 V - **Short-circuit current (Isc):** 13.98 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1133 mm - **Thickness:** 30 mm - **Weight:** 11.4 kg - **Area:** 1.95 m2 - **Power density:** 212.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 341 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8849 of 14005 | | Power density | 8730 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 126 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Ultralight design for weak-load roofs** - This series is purpose-built for structures with limited load capacity - metal-clad industrial halls, carports, and older pitched roofs - where standard glass-glass modules would require costly structural reinforcement. This is a genuine niche advantage not matched by standard peer series (GCL M10/54H, Jinko JS-PERC), which target conventional mounting systems. - **Competitive efficiency up to 21.52%** - Efficiency of 21.52% is essentially on par with GCL-M10/54H (21.5%) and HT54-18X(PD)-F (21.5%), and only 0.18 percentage points behind Jinko JS-PERC (21.7%) - a negligible difference for a typical residential/prosumer installation. - **25-year linear power warranty with 0.55%/year degradation** - The 0.55% annual degradation rate is in line with industry standards for PERC cells, and combined with a 25-year warranty term provides predictable energy yield across the system's lifecycle, simplifying LCOE calculations. - **Anti-reflective coated tempered glass** - Higher light transmission from the AR coating improves yield under diffuse irradiance conditions (overcast days, low sun angles), which is particularly relevant in Poland's climate with lower average angles of incidence. - **CETC technology backing** - The manufacturer (Hunan RedSolar), founded in 2008, was incubated by CETC's 48th Research Institute, providing access to decades of semiconductor and PV know-how rather than being a generic no-name OEM brand. ## Cons - **No BNEF Tier 1 status** - Unlike some competitors (e.g., Jinko Solar), RedSolar does not appear on publicly available BNEF Tier 1 lists - this may be a limiting factor for institutional investors and bank-financed projects requiring Tier 1 sourcing. - **12-year product warranty below current market trend** - Many Tier-1 manufacturers are now shifting to a 15-year product warranty as the 2026 market standard - the 12 years offered here sits at the lower end of the premium segment. - **No bifacial variant available** - This series is monofacial only, meaning installations on light-colored roofs or elevated ground-mount structures with high albedo cannot capture the additional yield (typically 5-10%) available from bifacial modules offered by some competitors. ## About this series The RedSolar P series M10-PERC Ultralight line addresses one of the most common challenges installers face - limited roof load capacity, where conventional glass-glass modules simply aren't a practical fit. The panels are built around **monocrystalline PERC M10 cells** arranged in a 108-cell configuration, delivering strong conversion efficiency while keeping overall module mass down. The defining advantage of this line is its **ultra-light construction**, which makes it possible to install these modules on low load-bearing roofs, metal industrial sheds, or carport structures, where panel weight directly affects the cost of structural reinforcement. The panels feature **tempered front glass with an anti-reflective coating**, improving light transmission and boosting energy yield under less favorable irradiance conditions. The manufacturer backs the series with a **25-year linear power warranty**, limiting annual degradation to 0.55%, along with a 12-year product warranty, translating into predictable returns over the full lifetime of the installation. Enhanced resistance to snow and wind loads makes this series a solid choice for both residential rooftop installations and commercial projects where low weight and high reliability are top priorities. ## Notable figures - Efficiency of 21.3% is 0.7pp above the \*\*PERC 400-450W\*\* median (20.6%) - Power density of 212.7 W/m² packs 6.5 W/m² more into the same footprint vs \*\*PERC 400-450W\*\* median (206.2 W/m²) - At -0.35%/°C, hot weather performance is typical for \*\*PERC 400-450W\*\* panels - Weight of 11.4 kg (10.6 kg below \*\*PERC 400-450W\*\* median of 22.0 kg) allows easier transport and roof mounting - #8849 for efficiency, #10419 for temperature performance out of 14005 panels ## Questions ### Are RedSolar P M10-PERC Ultralight panels suitable for low load-bearing roofs, like a metal-sheet hall? Yes, this is the primary purpose of this series. The ultralight construction was designed specifically for roofs with limited load-bearing capacity, industrial halls with metal sheeting, and carport structures, where panel weight directly affects the cost of structural reinforcement. Thanks to the reduced weight, installation typically does not require additional roof reinforcement. ### What warranty comes with RedSolar P M10-PERC Ultralight modules? The manufacturer provides a 12-year product warranty and a 25-year linear power warranty, with annual degradation limited to 0.55%. This means that after 25 years of operation the panel should retain a significant share of its original efficiency, resulting in a predictable, long-term return on investment. ### What is the maximum power output of the RedSolar P M10-PERC Ultralight panel and how many cells does it use? The module reaches a maximum power output of 420 Wp thanks to 108 monocrystalline PERC M10 cells. This configuration delivers high conversion efficiency while keeping the overall module mass reduced, which is essential for installations on roofs with low load-bearing capacity. ### Are the panels in this series bifacial? No, the P M10-PERC Ultralight series consists of monofacial modules built on classic PERC technology. Instead of dual-side generation, the manufacturer focused on reducing structural weight, making this model a more versatile choice where light weight matters more than maximizing rear-side irradiance gains. ### Does the anti-reflective glass coating actually improve energy yield? Yes. The tempered front glass with anti-reflective coating reduces sunlight reflection and increases light transmission to the cells, improving performance especially at low sun angles, such as early morning, evening, or winter conditions. In practice this translates to higher energy yield under more challenging irradiance conditions compared to standard glass. ### Can RedSolar Ultralight modules withstand heavy snow and wind loads despite their lower weight? Yes, despite the reduced-mass construction, this series features reinforced resistance to snow and wind loads, as confirmed by the module's mechanical specifications. The manufacturer designed the panel so that weight reduction does not compromise durability, making it suitable for both residential rooftop installations and commercial projects exposed to demanding weather conditions. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/17399360044349fs9qv-c0d1d4241c4c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +50 W, heavier, +2.5 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | Cooler, heavier, +2.5 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | Cooler, heavier, +2.3 pp | | [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | Cooler, heavier, +2.3 pp | | [Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-460w-class) | 460 W | Heavier, +2.3 pp, +5 yr warranty | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | Cooler, heavier, +2.3 pp | | [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | Cooler, heavier, +2.3 pp | | [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | Cooler, heavier, +2.2 pp | | [RedSolar CETC-400M(L)/108](https://comparepv.com/panel/redsolar-cetc-400m-l-108) | 400 W | -15 W, -0.8 pp | | [RedSolar CETC-405M(L)/108](https://comparepv.com/panel/redsolar-cetc-405m-l-108) | 405 W | -10 W, -0.5 pp | | [RedSolar CETC-410M(L)/108](https://comparepv.com/panel/redsolar-cetc-410m-l-108) | 410 W | -0.3 pp | | [RedSolar CETC-420M(L)/108](https://comparepv.com/panel/redsolar-cetc-420m-l-108) | 420 W | +0.2 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, heavier, +3.7 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, heavier, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, heavier, +3.4 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, heavier, +3.2 pp | --- Source: https://comparepv.com/panel/redsolar-cetc-415m-l-108 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.