--- title: "Goldi Solar GS10-B144-GF-555 555W Solar Panel - Specs & Review | ComparePV" description: "Goldi Solar GS10-B144-GF-555 555W solar panel. Specs: 21.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/goldi-solar-gs10-b144-gf-555" updated: 2026-09-11 --- # Goldi Solar GS10-B144-GF-555 Space saver, no clear weak spot 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Goldi Solar - **Model:** GS10-B144-GF-555 - **Series:** GS10-B144-GF - **Rated power:** 555 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) | 555 W | 560 W | Typical | | | Module efficiency | 21.50% | 21.29% | Strong - top 18% | 7,958 | | Power density | 214.9 | 212.9 | Strong - top 15% | 8,019 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 32.0 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 | 21.50% | 21.29% | Strong - top 18% | 7,958 | | Power density | 214.9 | 212.9 | Strong - top 15% | 8,019 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 57.7 | 52.7 | Typical | 11,340 | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Strengths - **214.9 watts per square metre** - Top 15% of the PERC 550-600 W segment, against a median of 212.9. - **21.50% module efficiency** - Top 18% of the PERC 550-600 W segment, against a median of 21.29%. - **30 year performance warranty** - Top 25% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 555 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 41.81 V - **Current at Pmax (Imp):** 13.28 A - **Open-circuit voltage (Voc):** 50.07 V - **Short-circuit current (Isc):** 13.84 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:** 144 - **Bifacial:** yes ### Physical - **Length:** 2279 mm - **Width:** 1133 mm - **Thickness:** 35 mm - **Weight:** 32.0 kg - **Area:** 2.58 m2 - **Power density:** 214.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 82.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 463 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14005 | | Power density | 8019 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 11340 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Kiwa PVEL 2024 Top Performer** - Goldi Solar earned Top Performer status in the 10th edition of the Kiwa PVEL PV Module Reliability Scorecard — independently verified resilience across Thermal Cycling (TC), Damp Heat (DH), Potential-Induced Degradation (PID), and LID+LETID test sequences. Fewer than 50 manufacturers worldwide achieve this distinction, and it directly translates into a lower risk of premature power loss over the system lifetime. - **Bifacial Glass-Glass Construction** - The module harvests energy from both the front and rear surfaces — a typical bifacial gain of 5–15% additional annual yield for ground-mount and commercial rooftop installations. The glass-glass encapsulation provides superior moisture and UV resistance compared to standard backsheet modules (EVA/PET), supporting long-term durability over a 30-year operational horizon. - **Half-Cut Multi-Busbar: Reduced Shading Losses** - Cell halving lowers resistive losses and limits the impact of partial shading on the entire string — particularly relevant in Polish conditions where shading from chimneys, antennas, or adjacent buildings is common. Multi-busbar (MBB) technology reduces the risk of microcracks and improves current collection compared to conventional 4–5 busbar designs. - **30-Year Linear Power Warranty** - The manufacturer guarantees a linear power degradation schedule over 30 years, with a minimum of 87.4% of rated power output at year 30. This warranty is on par with best-in-class competitors (DAH Solar DHM-T72X10/BF/FS offers an equivalent 30-year term), reducing long-term financial risk for the system owner. - **BNEF Tier-1 Manufacturer — Bankable** - Goldi Solar is listed as a Tier-1 bankable manufacturer by Bloomberg NEF — a key requirement for securing project financing from commercial banks and investment funds for utility-scale PV projects. This status is confirmed by module supply to projects backed by at least six independent commercial banks. ## Cons - **Series Discontinued (2024)** - The GS10-B144-GF was officially discontinued in 2024 after three years of production (2021–2024). This results in limited availability on the secondary market, difficulty sourcing identical replacement modules in the event of a failure, and potential warranty service complications as manufacturer and distributor inventories continue to shrink. - **Short Product Warranty — 12 Years** - The materials and workmanship warranty covers only 12 years, whereas the current market standard for premium bifacial modules is 15–25 years (e.g., DAH Solar and Exiom both offer 15 years). Over a 30-year system lifecycle, a 12-year product warranty may be viewed as a drawback that reduces the overall service value of the package. - **PERC vs. Newer N-Type TOPCon/HJT** - A Pmax temperature coefficient of -0.35%/°C is typical for PERC technology, but noticeably higher than that of N-type TOPCon modules (-0.29 to -0.30%/°C) available since 2023 at comparable price points. In the Polish climate the difference is modest; however, for utility-scale PV farms targeting maximum summer yield, it represents a measurable performance limitation. ## About this series The Goldi Solar GS10-B144-GF series is a bifacial glass-on-glass module designed for stable energy production even when conditions on the roof or ground are not ideal. The use of **monocrystalline PERC cells in half-cut technology** minimizes losses and improves performance under partial shading, while the **multi-busbar design** supports higher efficiency and better resistance to microcracks compared to many standard solutions. In practice, the GS10-B144-GF helps reduce system costs due to its higher power density and more predictable performance over time. The module stands out with **high PID resistance**, which is important in high-voltage installations and in challenging environments. Its **excellent performance in low light conditions** is also a key advantage, particularly in autumn and winter in Poland. It is a good choice for PV farms, large industrial rooftops, and agricultural properties, where durability, consistent energy yields, and a real advantage over typical monofacial panels are important. ## Notable figures - Efficiency of 21.5% matches the \*\*PERC 550-600W\*\* median - At 214.9 W/m² power density, roof space requirements are typical for \*\*PERC 550-600W\*\* panels - Temperature coefficient of -0.35%/°C matches the \*\*PERC 550-600W\*\* median - Weight of 32.0 kg is 1.2 kg above \*\*PERC 550-600W\*\* median (30.8 kg) - verify structural support - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces ## Questions ### Is the Goldi Solar GS10-B144-GF series still available for purchase? The GS10-B144-GF series has been discontinued and is no longer offered as a new product by Goldi Solar. Remaining stock may still be available through select distributors, but supply will not be replenished. Before ordering, confirm current inventory levels and whether your full quantity can be fulfilled. If availability is a concern, consider a newer series from the same manufacturer. ### What warranty does the Goldi Solar GS10-B144-GF panel carry? Goldi Solar provides a 12-year product warranty covering materials and workmanship, along with a 30-year linear power output warranty. This means the panel should maintain performance within the declared degradation schedule for three decades. As a Tier 1 manufacturer, Goldi Solar offers additional confidence regarding the financial standing of the warranty guarantor. ### What does bifacial technology mean for the GS10-B144-GF series, and when does it actually pay off? The glass-glass bifacial construction allows the module to generate electricity from both direct front-side irradiance and reflected rear-side light. Real-world bifacial gain typically ranges from a few percent up to 15–20% additional yield, depending on ground albedo. The benefit is greatest over light-colored gravel, white concrete, or snow — conditions common on ground-mounted farms and large industrial rooftops. ### Do Goldi Solar GS10-B144-GF panels perform well in low-light conditions during fall and winter? Yes. PERC cell technology combined with a half-cut layout delivers good efficiency under low irradiance conditions. Compared to older monofacial modules, autumn and winter yields are noticeably higher, making the GS10-B144-GF series a practical choice for locations with frequent overcast days — a typical scenario across much of Poland and Central Europe. ### Are the GS10-B144-GF panels rated up to 560 Wp suitable for a large solar farm or an industrial rooftop? Yes, that is precisely the intended application for this series. High unit power of up to 560 Wp and elevated power density reduce BoS costs — cabling, racking, and inverters — thereby lowering the overall system LCOE. The bifacial design and strong PID resistance make this series particularly well-suited for large ground-mounted installations and high-voltage commercial rooftop systems operating at 1000–1500 V. ### Is the GS10-B144-GF series resistant to microcracks and PID degradation? Yes. The multi-busbar (MBB) construction distributes mechanical stress more evenly across the cell, significantly reducing the risk of microcracks during transport and long-term operation. High PID (potential-induced degradation) resistance is especially important in systems operating at elevated system voltages, where less robust modules can lose power through uncontrolled charge leakage through the glass. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/goldi-datasheet-gs10-b144-gf-525-wp-560-wp-b2965df9e750.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.1 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, 16 kg lighter, +2.9 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +2.9 pp | | [Goldi Solar GS10-M144-BF-525](https://comparepv.com/panel/goldi-solar-gs10-m144-bf-525) | 525 W | Lighter, -1.2 pp, -5 yr warranty | | [Goldi Solar GS10-M144-BF-530](https://comparepv.com/panel/goldi-solar-gs10-m144-bf-530) | 530 W | Lighter, -1.0 pp, -5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +85 W, cooler, +3.3 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +80 W, cooler, +3.1 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +75 W, cooler, +2.9 pp | --- Source: https://comparepv.com/panel/goldi-solar-gs10-b144-gf-555 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.