--- title: "Goldi Solar GS10-T144-GF-595Wp 595W Solar Panel - Specs & Review | ComparePV" description: "Goldi Solar GS10-T144-GF-595Wp 595W solar panel. Specs: 23.03% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/goldi-solar-gs10-t144-gf-595wp" updated: 2026-09-11 --- # Goldi Solar GS10-T144-GF-595Wp Efficiency leader, no clear weak spot 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Goldi Solar - **Model:** GS10-T144-GF-595Wp - **Series:** HELOC PRO - **Rated power:** 595 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) | 595 W | 580 W | Strong - top 5% | | | Module efficiency | 23.03% | 22.44% | Strong - top 5% | 1,744 | | Power density | 230.3 | 224.4 | Strong - top 7% | 1,758 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 31.5 kg | 31.2 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.03% | 22.44% | Strong - top 5% | 1,744 | | Power density | 230.3 | 224.4 | Strong - top 7% | 1,758 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 52.9 | 53.8 | Typical | 6,657 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **23.03% module efficiency** - Top 5% of the TOPCon 550-600 W segment, against a median of 22.44%. Ranked 1,744th in the whole database. - **230.3 watts per square metre** - Top 7% of the TOPCon 550-600 W segment, against a median of 224.4. Ranked 1,758th in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 595 W - **Efficiency:** 23.03 % - **Voltage at Pmax (Vmp):** 45.95 V - **Current at Pmax (Imp):** 12.95 A - **Open-circuit voltage (Voc):** 53.17 V - **Short-circuit current (Isc):** 13.66 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/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 - **Bifacial gain:** 10.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.5 kg - **Area:** 2.58 m2 - **Power density:** 230.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 520 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1744 of 14005 | | Power density | 1758 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 6657 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Up to 23.03% Efficiency (TOPCon)** - TOPCon variants of the HELOC PRO series achieve 23.03% module efficiency, outperforming peer comparables Talesun BISTAR (21.5%) and Seraphim Seco (21.46%) by more than 1.5 percentage points. The result is only marginally surpassed by the Tongwei TWMND (23.2%), which is, however, a bifacial module. - **Kiwa PVEL Top Performer 2024** - Goldi Solar achieved Top Performer status in the 10th edition of the PV Module Reliability Scorecard (2024) — 16 modules in the series received recognition in TC, DH, PID, and LID+LETID testing, independently confirming above-average durability and degradation resistance under real-world conditions. - **BNEF Tier-1 Manufacturer (Bankable)** - Goldi Solar appears on the Bloomberg NEF Tier-1 bankable manufacturers list, facilitating non-recourse project financing for commercial and utility-scale installations. The designation has been maintained continuously since 2020. - **Linear Power Warranty Up to 30 Years** - Dual glass (glass-glass) variants are covered by a 30-year linear power warranty, while peer comparables Talesun and Seraphim offer a standard 25-year warranty. Backsheet versions retain a 25-year warranty — above the market minimum. - **49 Variants: PERC and TOPCon, 390–600 Wp** - The broad portfolio within a single series — ranging from 390 Wp (prosumer installations, space-constrained rooftops) to 600 Wp (ground-mount and commercial projects) across both cell technologies — allows module selection without changing suppliers and simplifies logistics for multi-segment projects. ## Cons - **No Bifacial Option Available** - All 49 HELOC PRO variants are monofacial modules (is\_bifacial: false). The direct peer comparable — Tongwei TWMND 72HD 580–600W — achieves 23.2% efficiency precisely in its bifacial configuration, typically generating 5–15% additional annual energy yield in ground-mount and agri-PV installations through albedo reflection. This limits the series' applicability in projects where bifaciality is a standard tendering requirement. ## About this series The Goldi Solar HELOC PRO series is designed for high performance in real-world conditions, even when space is limited or weather is unfavorable. The modules utilize a **half-cut architecture** and a **multi-busbar technology**, which helps minimize current losses and improves stability under partial shading. The use of advanced glass and textured surface of the cells results in **improved performance in low light**, ensuring that HELOC PRO maintains solid output even in autumn and winter. In practice, this series solves two common problems for investors: the need to maximize energy production from every square meter of roof space, and the risk of power drops due to shading and degradation. It also includes features such as **Anti-PID resistance** and a robust mechanical design. HELOC PRO is suitable for rooftop and ground-mounted installations for businesses, agriculture, and institutional projects. It stands out from the competition due to its **High Efficiency - Low on Carbon** approach, which combines high performance with a focus on reducing the carbon footprint in the manufacturing process. ## Notable figures - 23.0% module efficiency - 0.6pp better than the \*\*TOPCon 550-600W\*\* median of 22.4% - At 230.3 W/m² power density, this panel generates 5.9 W/m² more per unit area than \*\*TOPCon 550-600W\*\* median (224.4 W/m²) - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 550-600W\*\* median - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces - In the top 12% for efficiency among all TOPCon panels ## Questions ### What is the warranty on Goldi Solar HELOC PRO panels? Goldi Solar offers a 12-year product warranty (covering materials and workmanship) and a 30-year linear power output warranty on the HELOC PRO series. The 30-year power guarantee is one of the longer commitments available on the market, ensuring the module retains a specified percentage of its rated output over the full warranty period. Both manufacturing defects and gradual cell degradation are covered. ### What is TOPCon technology and why does the HELOC PRO series use it? TOPCon (Tunnel Oxide Passivated Contact) is an N-type silicon cell architecture that delivers higher conversion efficiency and lower annual degradation compared to older PERC cells. Goldi Solar uses TOPCon in the HELOC PRO to achieve module efficiency of around 21.5%, better performance at elevated temperatures, and reduced power loss over the system's lifetime. ### Does the Goldi Solar HELOC PRO perform well under partial shading or on overcast days? Yes. The HELOC PRO combines a half-cut cell layout (156 cells) with multi-busbar technology to minimize current losses caused by partial shading from chimneys, antennas, or dormers. The textured cell surface and advanced glass also improve diffuse light absorption, allowing the modules to maintain solid energy output during autumn and winter months. ### What is the maximum power output of the Goldi Solar HELOC PRO and which installations is it suited for? The top variant in the series reaches 600 Wp. The modules are designed for both rooftop and ground-mounted systems and are well-suited for commercial, agricultural, and institutional projects. The high per-module power output helps maximize energy production from limited roof or land area. ### Is Goldi Solar a Tier 1 manufacturer and where is it based? Yes, Goldi Solar holds Tier 1 status according to Bloomberg NEF, confirming bankability and a recognized market position. The company is headquartered in India and is one of the country's leading PV module manufacturers. Tier 1 status is an important indicator for project financiers and insurers evaluating PV installations. ### What does HELOC PRO stand for and how does this series differ from standard panels? HELOC stands for High Efficiency – Low on Carbon, emphasizing strong performance alongside a reduced carbon footprint in the manufacturing process. Beyond efficiency metrics, the series features Anti-PID protection to prevent voltage-induced cell degradation and a reinforced mechanical design. It is aimed at investors who consider both the economics and the environmental profile of their solar installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GOLDI_Datasheet_GS10-T144-GF-565-Wp-595-Wp_M10R-11-6f667971707c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +50 W, lighter, +2.0 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +1.8 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +45 W, lighter, +1.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | -40 W, lighter, +1.6 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +40 W, lighter, +1.6 pp | | [Goldi Solar GS10-M144-BF-525](https://comparepv.com/panel/goldi-solar-gs10-m144-bf-525) | 525 W | -70 W, -2.7 pp, -5 yr warranty | | [Goldi Solar GS10-M144-BF-530](https://comparepv.com/panel/goldi-solar-gs10-m144-bf-530) | 530 W | -65 W, -2.5 pp, -5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +55 W, lighter, +2.2 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +35 W, cooler, +1.4 pp | --- Source: https://comparepv.com/panel/goldi-solar-gs10-t144-gf-595wp Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.