--- title: "G-STAR GSP7G72M(H)550WT 550W Solar Panel - Specs & Review | ComparePV" description: "G-STAR GSP7G72M(H)550WT 550W solar panel. Specs: 21.29% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/g-star-gsp7g72m-h-550wt" updated: 2026-09-11 --- # G-STAR GSP7G72M(H)550WT Warranty pick, no clear weak spot 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** G-STAR - **Model:** GSP7G72M(H)550WT - **Series:** GSP7G72M(H) - **Rated power:** 550 W - **Cell technology:** PERC - **Bifacial:** yes ## 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 | 21.29% | 21.29% | Typical | 8,708 | | 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 | 21.29% | 21.29% | Typical | 8,708 | | 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:** Utility-scale, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 550 W - **Efficiency:** 21.29 % - **Voltage at Pmax (Vmp):** 41.96 V - **Current at Pmax (Imp):** 13.11 A - **Open-circuit voltage (Voc):** 49.92 V - **Short-circuit current (Isc):** 14.00 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### 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:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 467 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8708 of 14005 | | Power density | 8497 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 4268 of 14005 | | Warranty | 21 of 14005 | ## Pros - **High mechanical durability** - The reinforced anodized aluminum alloy frame withstands snow loads up to 5400 Pa and rear wind loads up to 2400 Pa, matching or exceeding the typical segment benchmark of 5400/2400 Pa and enabling installation in regions with high wind and snow loads. - **Half-cut cell design with 10BB** - Splitting mono PERC cells into halves combined with 10-busbar technology reduces resistive losses and hot-spot risk, while improving module performance under partial shading and low-irradiance conditions. - **Competitive efficiency up to 21.29%** - Efficiency in the 20.52-21.29% range is on par with leading peer comparables in the 530-550 Wp segment, such as the IBC Solar 182M Half Cell (21.28%) and Goldi Solar GS10-B144-TF (21.3%). - **Extra yield from bifacial technology** - The single-glass bifacial construction captures additional energy reflected off the ground from the rear side of the module, which is particularly beneficial on light-colored roofs, facades, or ground-mount installations with high-albedo terrain. - **IP68-rated junction box** - The IP68-rated junction box provides high resistance to moisture and contamination, reducing the risk of electrical connection failures under demanding operating conditions. ## Cons - **Manufacturer not on BNEF Tier 1 list** - G-STAR does not appear on the BloombergNEF Tier 1 list, unlike some competitors in the 530-550 Wp segment. This may translate into higher project financing risk with banks and less certainty about the manufacturer's production scale and supply chain stability. - **Shorter product warranty than market standard** - The 12-year product warranty falls below the current premium-segment standard, where Tier 1 manufacturers (e.g., IBC Solar - 25 years) typically offer 25-year materials and workmanship coverage, increasing long-term servicing risk exposure for the investor. ## About this series The GSP7G72M(H) series comprises bifacial single glass solar modules built with **half-cut mono PERC** cells and **10BB** busbar technology. By splitting cells in half and reducing resistive losses, the panel delivers a lower risk of hot spots and more stable performance even under partial shading. The rear side captures additional reflected radiation from the ground, resulting in **increased rear-side energy yield** depending on installation conditions and surrounding albedo. This makes the series especially well suited to installations over bright, reflective surfaces - light-colored roofing, facades, or ground-mount farms with high-albedo terrain. The reinforced frame and structure are engineered for **enhanced mechanical load resistance**, allowing installation in regions with heavy wind and snow loads. The **IP68-rated junction box** provides high resistance to moisture and contaminants, extending trouble-free operation of the array. The GSP7G72M(H) series is a solid choice for both commercial and residential investors seeking panels that combine durability, low long-term power degradation, and installation flexibility across varied site conditions. ## Notable figures - At 21.3% efficiency, this panel is on par with typical \*\*PERC 550-600W\*\* modules - Power density of 212.9 W/m² matches the \*\*PERC 550-600W\*\* median - At -0.35%/°C, hot weather performance is typical for \*\*PERC 550-600W\*\* panels - Weight of 28.0 kg (2.8 kg below \*\*PERC 550-600W\*\* median of 30.8 kg) allows easier transport and roof mounting - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces ## Questions ### Are the GSP7G72M(H) panels bifacial, and how much extra energy can they generate? Yes, the GSP7G72M(H) series consists of bifacial modules in a single glass construction that capture irradiance on both the front and rear sides. The additional energy yield depends on ground albedo and mounting height above the surface - the brighter and more reflective the surface, the higher the gain. Best results are achieved on light-colored roofs, facades, and ground-mount farms with reflective surfaces like gravel or white membrane. ### What is the maximum power output of the GSP7G72M(H) panels and what cell technology do they use? The panels reach a maximum power output of up to 550 Wp thanks to mono PERC half-cut cells with 10BB busbar technology. Splitting cells in half reduces resistive losses and the risk of hot spots, while the higher busbar count improves current collection and module stability, including under partial shading. ### What warranty comes with the GSP7G72M(H) panels? Manufacturer G-STAR provides a 12-year product warranty along with a 30-year power performance warranty. This ensures long-term coverage against material and workmanship defects, as well as gradual power degradation over time, which is an important factor when calculating the ROI of a PV installation. ### Are the GSP7G72M(H) panels suitable for regions with high wind and snow loads? Yes, the series features a reinforced frame and structure engineered for increased mechanical strength. This allows the panels to better withstand high snow and wind loads, making them a solid choice for installations in more demanding climatic conditions, whether roof-mounted or ground-mounted. ### What IP rating does the junction box on the GSP7G72M(H) panels have, and why does it matter? The modules are equipped with an IP68-rated junction box, the highest commonly used protection standard against moisture, dust, and contaminants. This translates into a lower risk of electrical connection failures and a longer, trouble-free service life for the installation, even in humid or dusty environments. ### Is G-STAR a Tier 1 manufacturer, and who is the GSP7G72M(H) series best suited for? G-STAR is not currently listed as a Tier 1 manufacturer, which is worth considering when assessing financial risk and long-term warranty support availability. That said, the GSP7G72M(H) series is a good fit for both private and commercial investors looking for bifacial panels with a solid power-to-price ratio and flexible mounting options. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1773717922781167-777fbb3016b2.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 | | [G-STAR GSP7G72M(H)530WT](https://comparepv.com/panel/g-star-gsp7g72m-h-530wt) | 530 W | -20 W, -0.8 pp | | [G-STAR GSP7G72M(H)535WT](https://comparepv.com/panel/g-star-gsp7g72m-h-535wt) | 535 W | -15 W, -0.6 pp | | [G-STAR GSP7G72M(H)540WT](https://comparepv.com/panel/g-star-gsp7g72m-h-540wt) | 540 W | -10 W, -0.4 pp | | [G-STAR GSP7G72M(H)545WT](https://comparepv.com/panel/g-star-gsp7g72m-h-545wt) | 545 W | Very close match | | [G-STAR GSD7S72T-565WT](https://comparepv.com/panel/g-star-gsd7s72t-565wt) | 565 W | Cooler, heavier, +0.6 pp | | [G-STAR GSD7S72T-570WT](https://comparepv.com/panel/g-star-gsd7s72t-570wt) | 570 W | Cooler, heavier, +0.8 pp | | [G-STAR GSD7S72T-575WT](https://comparepv.com/panel/g-star-gsd7s72t-575wt) | 575 W | Cooler, heavier, +1.0 pp | | [G-STAR GSD7S72T-580WT](https://comparepv.com/panel/g-star-gsd7s72t-580wt) | 580 W | Cooler, heavier, +1.2 pp | | [G-STAR GSD7S72T-585WT](https://comparepv.com/panel/g-star-gsd7s72t-585wt) | 585 W | Cooler, heavier, +1.4 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 | --- Source: https://comparepv.com/panel/g-star-gsp7g72m-h-550wt Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.