--- title: "Sun Earth SKT390M10 390W Solar Panel - Specs & Review | ComparePV" description: "Sun Earth SKT390M10 390W solar panel. Specs: 19.97% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sun-earth-skt390m10" updated: 2026-09-11 --- # Sun Earth SKT390M10 Middle of its segment, short guarantee 6,208 panels in the 290-490 W band, all technologies ## Identity - **Manufacturer:** Sun Earth - **Model:** SKT390M10 - **Series:** 182 mm 108 Cells Terracotta N Type Mono Half Cell PV Module Series (BIPV) - **Rated power:** 390 W - **Cell technology:** BIPV ## How it compares Compared against 290-490 W band, all technologies (6208 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 390 W | 430 W | Weak - bottom 20% | | | Module efficiency | 19.97% | 21.26% | Weak - bottom 19% | 12,302 | | Power density | 199.7 | 212.5 | Weak - bottom 20% | 12,255 | | Temperature coefficient | -0.290 | -0.300 | Typical | 2,165 | | Weight (kg) | 20.5 kg | 22.3 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.97% | 21.26% | Weak - bottom 19% | 12,302 | | Power density | 199.7 | 212.5 | Weak - bottom 20% | 12,255 | | Temperature coefficient | -0.290 | -0.300 | Typical | 2,165 | | Weight per kWp | 52.6 | 53.3 | Typical | 6,190 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 9,798 | ### Watch out for - **25 year performance warranty** - Bottom 19% of the 290-490 W band, against a median of 30 yrs. - **19.97% module efficiency** - Bottom 19% of the 290-490 W band, against a median of 21.26%. - **199.7 watts per square metre** - Bottom 20% of the 290-490 W band, against a median of 212.5. - **Best for:** Residential, BIPV and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 390 W - **Efficiency:** 19.97 % - **Voltage at Pmax (Vmp):** 32.15 V - **Current at Pmax (Imp):** 12.19 A - **Open-circuit voltage (Voc):** 38.12 V - **Short-circuit current (Isc):** 12.46 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** BIPV - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 20.5 kg - **Area:** 1.95 m2 - **Power density:** 199.7 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 89.4 % - **Output after 30 years:** 341 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12302 of 14005 | | Power density | 12255 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 6190 of 14005 | | Warranty | 9798 of 14005 | ## About this series The Sun Earth 182 mm 108 Cell Terracotta N-Type Mono Half Cell (BIPV) series is designed for integration with buildings - where both energy generation and a consistent aesthetic for the facade or roof are important. It is distinguished by its **terracotta finish**, which makes it easy to match to architecture (e.g., residential buildings, premium properties, conservation areas), without the "black sheet" effect typical of standard panels. The use of **N-type cells** and **half-cell technology** ensures stable operation in real conditions, even with partial shading and uneven sunlight exposure, which is common on roofs with dormers, chimneys, or in terraced housing. The BIPV design in the **glass-glass** variant improves resistance to weather conditions and makes the module suitable for use as a partition wall. This is a solution for investors who want to avoid compromising between appearance and functionality and are looking for **building-integrated photovoltaics** that stand out from traditional modules mounted on frames. ## Notable figures - 20.0% module efficiency - 1.5pp better than the \*\*BIPV 0-400W\*\* median of 18.4% - Power density of 199.7 W/m² packs 15.3 W/m² more into the same footprint vs \*\*BIPV 0-400W\*\* median (184.4 W/m²) - -0.29%/°C temperature coefficient (median: -0.35%/°C) - retains ~2% more power at high temperatures - #12302 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### How do Sun Earth Terracotta N-Type BIPV panels differ from standard black PV modules? The main difference is the terracotta surface finish, which mimics traditional roof tile or ceramic cladding — eliminating the black-panel effect typical of conventional modules. Beyond aesthetics, the glass-glass construction allows the module to serve as a structural building element (roof or facade), not just an add-on overlay. This is a true BIPV solution designed for architectural integration in residential, premium, and heritage-protected projects. ### What warranty does the Sun Earth 182 mm 108 Cells Terracotta BIPV series come with? Sun Earth provides a 12-year product warranty covering material and manufacturing defects, plus a 25-year linear power output warranty. This means the module is guaranteed to maintain a minimum rated efficiency for a quarter of a century. When sizing the system, it is advisable to pair these panels with an inverter carrying a comparable warranty period to ensure full long-term system coverage. ### Will the Sun Earth Terracotta series perform well on a roof with dormers, chimneys, or other shading obstacles? Yes. The combination of N-type mono cells and half-cut cell technology (108 cells split into two independent strings) significantly reduces power losses under partial shading — a shaded section does not fully block the rest of the module. This is a key advantage for residential roof installations with dormers, chimneys, or antennas, where uniform irradiance across every panel is rarely achievable. ### What is the peak power of the Sun Earth 182 mm 108 Cells Terracotta module and how many panels does a typical home need? Peak power is 390 Wp per module. A typical household consuming 3,500–5,000 kWh per year generally requires 8–14 modules (a 3–5.5 kWp system). The exact number depends on location, roof orientation, and tilt angle. A certified installer should perform a site-specific energy analysis to determine the optimal system size. ### Can Sun Earth Terracotta BIPV modules be used as a facade element rather than just a roof covering? Yes. The glass-glass construction makes this series well suited for ventilated facade cladding or structural glazing applications. The front and rear glass laminates form a rigid, weatherproof panel resistant to moisture and mechanical stress. This is the essence of BIPV — the module simultaneously functions as a building material and a power generator, making it particularly attractive for premium developments and architecturally sensitive sites. ### Do the N-type cells in the Sun Earth Terracotta series offer real advantages over older PERC technology? N-type cells feature a lower temperature coefficient (smaller power loss at elevated module temperatures) and greater resistance to light-induced degradation (LID/LeTID) compared to PERC. In practice, this means more stable output during summer and slower long-term power degradation. For BIPV modules installed in roof apertures where airflow and cooling are limited, reduced thermal losses are a particularly meaningful benefit over the 25-year power warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1-skt390m10-ral8001-469596656ee8.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | +50 W, +3.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -50 W, +3.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +3.0 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, +3.0 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 | Lighter, +3.0 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 | Lighter, +3.0 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, +3.0 pp, +5 yr warranty | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +50 W, +2.9 pp, +5 yr warranty | | [Sun Earth DXM8-54HBG-420](https://comparepv.com/panel/sun-earth-dxm8-54hbg-420) | 420 W | Heavier, +1.5 pp, +15 yr warranty | | [Sun Earth DXM8-54HBG-430](https://comparepv.com/panel/sun-earth-dxm8-54hbg-430) | 430 W | +40 W, +2.0 pp, +15 yr warranty | | [Sun Earth DXM8-54HBG-435](https://comparepv.com/panel/sun-earth-dxm8-54hbg-435) | 435 W | +45 W, +2.3 pp, +15 yr warranty | | [Sun Earth DXM8-54HBG-440](https://comparepv.com/panel/sun-earth-dxm8-54hbg-440) | 440 W | +50 W, +2.5 pp, +15 yr warranty | | [Sun Earth DXM8-54HBG-450](https://comparepv.com/panel/sun-earth-dxm8-54hbg-450) | 450 W | +60 W, +3.0 pp, +15 yr warranty | | [Sun Earth DXM8-54HBG-455](https://comparepv.com/panel/sun-earth-dxm8-54hbg-455) | 455 W | +65 W, +3.3 pp, +15 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +120 W, +5.0 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +105 W, +4.8 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/sun-earth-skt390m10 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.