--- title: "Sun Earth DXM8-72H/BF 550W 550W Solar Panel - Specs & Review | ComparePV" description: "Sun Earth DXM8-72H/BF 550W 550W solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sun-earth-dxm8-72h-bf-550w" updated: 2026-09-11 --- # Sun Earth DXM8-72H/BF 550W Warranty pick, no clear weak spot 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Sun Earth - **Model:** DXM8-72H/BF 550W - **Series:** STEEL - **Rated power:** 550 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 550 W | 560 W | Weak - bottom 15% | | | Module efficiency | 21.30% | 21.29% | Typical | 8,519 | | Power density | 212.9 | 212.9 | Typical | 8,497 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 28.0 kg | 30.8 kg | Typical | | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 21.29% | Typical | 8,519 | | Power density | 212.9 | 212.9 | Typical | 8,497 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 50.9 | 52.7 | Typical | 4,268 | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Strengths - **30 year performance warranty** - Top 25% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Owners who value a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 550 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 41.90 V - **Current at Pmax (Imp):** 13.13 A - **Open-circuit voltage (Voc):** 49.90 V - **Short-circuit current (Isc):** 13.99 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.275 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.0 kg - **Area:** 2.58 m2 - **Power density:** 212.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 81.0 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.57 % - **Output after 30 years:** 445 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8519 of 14005 | | Power density | 8497 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 4268 of 14005 | | Warranty | 21 of 14005 | ## About this series The Sun Earth STEEL DXM8-72H/BF series stands out due to the combination of advanced **PERC Half-Cut cell technology** with an innovative **10-busbar cylindrical ribbon system**, which minimizes the risk of microcrack formation and effectively reduces internal power losses. This allows the modules to maintain high efficiency throughout the entire lifespan of the installation, even in demanding environmental conditions. The **bifacial design** (two-sided) enables energy to be harvested from both direct and reflected sunlight, resulting in higher annual yields compared to traditional single-sided panels. The black anodized aluminum frame gives the modules an elegant appearance, which is particularly desirable in residential and commercial installations. The STEEL series is designed for reliability in challenging conditions - the panels are fully **PID-resistant** (Power Induced Degradation), withstand extreme snow and wind loads, and operate over a wide temperature range. The quality is confirmed by a **30-year warranty** on linear power output decline, making this series an excellent choice for both large-scale solar farms and rooftop solar installations for residential and industrial buildings. ## Notable figures - Efficiency of 21.3% matches the \*\*PERC 550-600W\*\* median - At 212.9 W/m² power density, roof space requirements are typical for \*\*PERC 550-600W\*\* panels - At -0.35%/°C, hot weather performance is typical for \*\*PERC 550-600W\*\* panels - At 28.0 kg, this panel is 2.8 kg lighter than \*\*PERC 550-600W\*\* median (30.8 kg) - easier handling during installation - In the top 61% for efficiency among all PERC panels ## Questions ### What is the warranty on Sun Earth STEEL DXM8-72H/BF solar panels? The Sun Earth STEEL series comes with a 12-year product warranty covering material and workmanship defects, and a 30-year linear power output warranty. This guarantees that after 30 years of operation the panels will retain a specified minimum percentage of their rated power — one of the longest power warranties available in this class of PV modules. ### What are 10-busbar cylindrical ribbons in the Sun Earth STEEL series and why do they matter? The 10-busbar cylindrical ribbon technology distributes current across more conductive paths, shortening the electron travel distance and reducing internal resistance. The cylindrical cross-section of each ribbon minimizes mechanical stress on the PERC half-cut cells, reducing the risk of micro-cracks. In practice, this translates to higher conversion efficiency and better long-term durability over the 30-year system lifetime. ### Are Sun Earth STEEL 550 Wp panels suitable for a pitched residential roof? Yes, the STEEL series up to 550 Wp works well on both pitched and flat roofs. The black anodized aluminum frame gives the modules a sleek appearance that is especially valued in residential prosumer installations. Before purchasing, consult a certified installer to confirm that the roof structure can support the module weight and accommodate a compatible mounting system. ### Are Sun Earth STEEL panels resistant to PID and extreme weather conditions? Yes, the STEEL series is engineered for full resistance to PID (Potential Induced Degradation), which is especially critical in large systems operating at high DC string voltages. The modules withstand extreme snow and wind loads and function reliably across a wide temperature range, as confirmed by IEC compliance certifications. ### Does the PERC half-cut cell technology in the Sun Earth STEEL series improve performance under partial shading? Yes. PERC half-cut cells are split in two, which halves the operating current in each cell string and reduces resistive losses. The internal wiring layout also means that partial shading of one section — for example from a chimney or antenna — has a smaller impact on total module output than with conventional full cells. For rooftops with obstacles, this is a meaningful advantage that raises annual energy yield. ### Is Sun Earth a Tier 1 manufacturer, and does it matter when choosing these panels? Sun Earth is not currently listed as a Tier 1 manufacturer by major PV rating agencies such as BloombergNEF. This can be relevant when applying for bank financing or a PV leasing product, where lenders often require modules from Tier 1 suppliers. It is advisable to check the specific requirements of your financing program or lender before committing to a purchase. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/STEEL_DXM8-72H-BF_M8-535-550W_web-ott-29aa6e1c5921.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 | -45 W, cooler, +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, cooler, +3.2 pp | | [Sun Earth DXM8-72H/BF 535W](https://comparepv.com/panel/sun-earth-dxm8-72h-bf-535w) | 535 W | -15 W, -0.6 pp | | [Sun Earth DXM8-72H/BF 540W](https://comparepv.com/panel/sun-earth-dxm8-72h-bf-540w) | 540 W | -10 W, -0.4 pp | | [Sun Earth SKT545M10-144D4](https://comparepv.com/panel/sun-earth-skt545m10-144d4) | 545 W | Cooler, heavier | | [Sun Earth SKT555M10-144D4](https://comparepv.com/panel/sun-earth-skt555m10-144d4) | 555 W | Cooler, heavier | | [Sun Earth SKT560M10-144D4](https://comparepv.com/panel/sun-earth-skt560m10-144d4) | 560 W | Cooler, heavier, +0.4 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +85 W, cooler, +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-dxm8-72h-bf-550w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.