--- title: "Sun Earth SKT550M10-144D4 550W Solar Panel - Specs & Review | ComparePV" description: "Sun Earth SKT550M10-144D4 550W solar panel. Specs: 21.29% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sun-earth-skt550m10-144d4" updated: 2026-09-11 --- # Sun Earth SKT550M10-144D4 Middle of its segment, modest efficiency 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Sun Earth - **Model:** SKT550M10-144D4 - **Series:** SKT545~580M10-144D4 - **Rated power:** 550 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1018 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 550 W | 580 W | Weak - bottom 2% | | | Module efficiency | 21.29% | 22.44% | Weak - bottom 4% | 8,708 | | Power density | 212.9 | 224.4 | Weak - bottom 5% | 8,497 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 32.0 kg | 31.2 kg | Weak - bottom 6% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.29% | 22.44% | Weak - bottom 4% | 8,708 | | Power density | 212.9 | 224.4 | Weak - bottom 5% | 8,497 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 58.2 | 53.8 | Weak - bottom 6% | 11,595 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.29% module efficiency** - Bottom 4% of the TOPCon 550-600 W segment, against a median of 22.44%. Ranked 8,708th in the whole database. - **212.9 watts per square metre** - Bottom 5% of the TOPCon 550-600 W segment, against a median of 224.4. Ranked 8,497th in the whole database. - **58.2 kg per kWp** - Bottom 6% of the TOPCon 550-600 W segment, against a median of 53.8. Ranked 11,595th in the whole database. - **Best for:** Commercial, utility-scale, shaded-installations and hot-climate. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 550 W - **Efficiency:** 21.29 % - **Voltage at Pmax (Vmp):** 41.48 V - **Current at Pmax (Imp):** 13.26 A - **Open-circuit voltage (Voc):** 50.18 V - **Short-circuit current (Isc):** 13.98 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:** TOPCon - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 32.0 kg - **Area:** 2.58 m2 - **Power density:** 212.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **Output after 30 years:** 481 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8708 of 14005 | | Power density | 8497 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 11595 of 14005 | | Warranty | 21 of 14005 | ## About this series The Sun Earth SKT545~580M10-144D4 series is a premium module range designed for projects where maximizing energy yield per square meter is paramount. This series utilizes **TOPCon monocrystalline** cells in a **half-cut** configuration, which translates to improved performance at high temperatures, reduced internal losses, and more stable energy generation in varying weather conditions. The **double-glass** construction enhances resistance to microcracks and aging, while also facilitating long-term high efficiency. This series is also **bifacial**, meaning it can utilize reflected light from the ground, making it particularly well-suited for roofs with light-colored membranes, ground-mounted installations, and industrial settings where the environment can be designed for optimal energy gain. A key advantage over many competing modules is the **long power warranty**, which simplifies investment planning and financing. ## Notable figures - Module efficiency of 21.3% is 1.2pp below average for \*\*TOPCon 550-600W\*\* panels (median: 22.4%) - Power density of 212.9 W/m² is 11.5 W/m² below \*\*TOPCon 550-600W\*\* median (224.4 W/m²) - needs more roof space - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 550-600W\*\* median - Ranked #8708 out of 14005 panels for efficiency in the database ## Questions ### Is the Sun Earth SKT545~580M10-144D4 series still available for purchase? The SKT545~580M10-144D4 series has been discontinued by the manufacturer. New direct shipments from Sun Earth are no longer available. Limited stock may still exist with some distributors, but anyone planning a larger installation should verify availability before placing an order or consider sourcing a current equivalent with comparable specifications. ### What product and power output warranties come with the Sun Earth SKT545~580M10-144D4 modules? Sun Earth covers the SKT545~580M10-144D4 with a 15-year product warranty against manufacturing and material defects, plus a 30-year linear power output warranty. A 30-year power guarantee is a premium-tier benchmark that simplifies long-term yield modeling and supports project financing requirements for commercial and industrial installations. ### What does bifacial mean on the SKT545~580M10-144D4 and is the extra cost justified? Bifacial means the module generates power from both sides — the rear glass captures albedo light reflected off the ground or roof surface. The gain is most significant on bright membranes, white gravel, or snow-covered surfaces, and can add several to over ten percent in annual yield. For ground-mount and industrial systems where the surrounding environment can be designed intentionally, bifacial is a proven strategy for reducing LCOE. ### Are the Sun Earth SKT545~580M10-144D4 modules suitable for large ground-mount and industrial projects? Yes, the 144-cell format rated up to 580 Wp is aimed primarily at commercial and utility-scale applications. The double glass construction improves mechanical strength and long-term weather resistance, while bifacial operation allows site designers to optimize ground reflectivity for additional yield. The high per-module wattage also reduces total module count and balance-of-system (BoS) costs per megawatt. ### How does TOPCon cell technology in the SKT545~580M10-144D4 compare to standard PERC modules? TOPCon (Tunnel Oxide Passivated Contact) is the generation of cell technology that follows PERC. A thin tunnel oxide layer reduces carrier recombination, resulting in higher conversion efficiency and a better temperature coefficient — the module loses proportionally less power on hot days. In real-world conditions, this translates into higher annual energy yield per square meter compared to conventional PERC panels. ### How do Sun Earth SKT545~580M10-144D4 panels handle partial shading? The half-cut cell layout splits each cell in half, which lowers resistive losses and limits the impact of partial shading on overall module output. When a shadow falls on only part of the panel, the unshaded half continues to operate effectively. This is a meaningful advantage in installations where obstructions — chimneys, antennas, or adjacent rows in large rooftop arrays — cannot be fully avoided. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/5-2-182mm-16BB-144cells-545-580W-Double-Glass-Bifacial-TOPC-b00589dac0b0.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | -50 W, lighter, +3.2 pp | | [Sun Earth DXM8-72H/BF 535W](https://comparepv.com/panel/sun-earth-dxm8-72h-bf-535w) | 535 W | Hotter, lighter, -0.6 pp | | [Sun Earth DXM8-72H/BF 540W](https://comparepv.com/panel/sun-earth-dxm8-72h-bf-540w) | 540 W | Hotter, lighter, -0.4 pp | | [Sun Earth SKT545M10-144D4](https://comparepv.com/panel/sun-earth-skt545m10-144d4) | 545 W | Very close match | | [Sun Earth SKT555M10-144D4](https://comparepv.com/panel/sun-earth-skt555m10-144d4) | 555 W | Very close match | | [Sun Earth SKT560M10-144D4](https://comparepv.com/panel/sun-earth-skt560m10-144d4) | 560 W | +10 W, +0.4 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +100 W, lighter, +3.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +95 W, lighter, +3.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +90 W, lighter, +3.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +85 W, lighter, +3.3 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +80 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/sun-earth-skt550m10-144d4 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.