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Goldi Solar GS10-M120-BF-435
Goldi Solar Brand review

GS10-M120-BF-435

435 Wp PERC
ComparePV verdict

Middle of its segment, needs the roof space

Rank 11,867 of 14,129
Compare panels Datasheet PDF
Power (Wp)
435
Strong · top 22%
Efficiency (%)
20.10
Weak · bottom 16%
Density (Wp/m²)
201.0
Weak · bottom 15%
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
24.0
Typical · median 22.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

The Goldi Solar HELOC PRO GS10-M120-BF series is a monocrystalline module built for rooftop installations where both aesthetics and dependable performance matter. The panel is based on half-cut PERC cells cut from M10 wafers and connected in a multi-busbar layout, which reduces resistive losses and improves heat dissipation on hot days. It is finished with a sleek black frame that blends well with residential architecture, without sacrificing the ruggedness required for industrial and agricultural applications. Advanced glass and cell surface texturing deliver stable energy output even in low-light conditions, while strong PID resistance minimizes the risk of power loss over the module's lifetime. A sealed, waterproof IP68 junction box and a frame engineered to withstand heavy snow and wind loads make the panel well suited to demanding climates. It is a solid choice for investors looking for a balance between lower LCOE, shorter payback periods, and a long-term linear power warranty, backed by Goldi Solar's multi-year service support.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.10% 20.60% Weak · bottom 16% 12,187
Power density 201.0 206.2 Weak · bottom 15% 12,196
Temperature coefficient -0.350 -0.350 Typical 10,489
Weight per kWp 55.2 53.0 Typical 9,671
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Roofs where every square metre has to count and tight roof space.

Watch-outs
201.0 watts per square metre

Bottom 15% of the PERC 400-450 W segment, against a median of 206.2.

20.10% module efficiency

Bottom 16% of the PERC 400-450 W segment, against a median of 20.60%.

What owners get
BNEF Tier-1 bankable status

Goldi Solar is listed on Bloomberg New Energy Finance's 'Bankable Tier 1' list, meaning its modules have secured non-recourse financing from at least six different banks over the past two years. This meaningfully eases bank financing for commercial and industrial projects.

Half-cut cells with multi-busbar design

The use of half-cut PERC cells on M10 wafers connected in a multi-busbar configuration reduces resistive losses and improves heat dissipation, resulting in more stable module performance during high panel temperatures in summer.

Black frame suited for residential roofs

The aesthetic black frame allows better visual integration with residential building architecture, an important factor in the prosumer segment, while retaining the durability required for industrial and agricultural installations.

IP68 junction box and high PID resistance

A weatherproof IP68-rated junction box combined with enhanced potential-induced degradation (PID) resistance minimizes the risk of premature power loss, particularly important in humid or saline environments.

Snow and wind load resistant construction

A reinforced mechanical structure provides resistance to heavy snow and wind loads, making the series suitable for locations with extreme weather conditions without requiring additional mounting reinforcement.

Trade-offs
Lower efficiency than comparable models

Efficiency of 20.1-20.79% is notably lower than peer comparables in the same 450 Wp power class, such as SunKean/Sunket SKT430~450M10-108D5 (23.04%) or Sunova Tangra S Pro HD (22.5%) - a gap of up to 2-3 percentage points, meaning lower energy yield for the same roof area.

PERC technology instead of TOPCon/HJT

The series relies on older PERC cells, while competing 450 Wp-class modules achieve higher efficiency through newer N-type (TOPCon/HJT) technology. As of 2026, PERC is already a legacy technology in the premium segment, which may affect the future market value of installations.

12-year product warranty below market trend

The 12-year warranty against material and manufacturing defects is shorter than the 15-year standard now offered by many Tier-1 manufacturers, creating an asymmetry in coverage during the first decade of operation relative to the 25-year linear power warranty.

Notes from the database
  • At 20.1% efficiency, this panel is on par with typical PERC 400-450W modules
  • At 201.0 W/m², this panel generates 5.2 W/m² less per unit area than PERC 400-450W median (206.2 W/m²)
  • Temperature coefficient of -0.35%/°C matches the PERC 400-450W median
  • At 24.0 kg (2.0 kg above PERC 400-450W median of 22.0 kg), requires checking roof load capacity
  • #12187 for efficiency, #10489 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.10 % Weak Segment median 20.60%
Vmpp · Impp 36.03 V · 12.05 A Operating point at max power
Voc · Isc 41.02 V · 13.34 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1910×1133×35 mm · 2.16 m² of roof
Weight 24.0 kg Typical Typical · median 22.0 kg
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.350 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.280 · 0.048 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 357 W guaranteed
Degradation 2.00 → 0.55 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.350 %/°C against a segment median of -0.350
-

Alternatives

All Goldi Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Goldi Solar GS10-M120-BF-435 435 W 20.10% -0.350 24.0 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, cooler, +4.2 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +4.2 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, cooler, +4.2 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +4.2 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, cooler, +4.2 pp
GS10-B120-GF-440 440 W 20.33% -0.320 24.0 kg Cooler, +0.2 pp
GS10-B120-GF-445 445 W 20.56% -0.320 24.0 kg +10 W, cooler, +0.5 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +125 W, cooler, +4.7 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +120 W, cooler, +4.5 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +115 W, cooler, +4.3 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +105 W, cooler, +4.3 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +105 W, cooler, +4.3 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +110 W, cooler, +4.2 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +110 W, cooler, +4.1 pp

Found 756 panels of the same or similar size to this one, within ±10 mm. See them here Found 760 panels of the same or similar size to this one, within ±25 mm. See them here Found 1054 panels of the same or similar size to this one, within ±50 mm. See them here Found 1508 panels of the same or similar size to this one, within ±100 mm. See them here

About the HELOC PRO GS10-M120-BF series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What is the maximum power output of the HELOC PRO GS10-M120-BF panel, and how many modules are needed for a typical 5 kW system?
The HELOC PRO GS10-M120-BF series reaches up to 450 Wp per panel. For a 5 kWp installation, around 11-12 modules are typically needed, depending on the exact power variant chosen from the series. This allows a system of this size to fit on a relatively small roof area while maintaining high module efficiency.
How do the half-cut PERC cells in the GS10-M120-BF differ from standard full-size cells?
Half-cut cells are standard PERC cells cut in half, mounted on an M10 wafer and connected in a multi-busbar layout. This design reduces resistive losses, improves heat dissipation, and limits the impact of partial shading on overall panel output, allowing the module to produce more energy under difficult conditions than panels with full-size cells.
What warranty comes with the Goldi Solar HELOC PRO GS10-M120-BF panels?
Goldi Solar provides a 12-year product warranty along with a 25-year linear power output warranty. This means the panel is expected to maintain a guaranteed percentage of its original output over a quarter century, while material or manufacturing defects are covered by service support during the first 12 years of operation.
Is the GS10-M120-BF panel PID-resistant and suitable for large solar farms?
Yes, the HELOC PRO GS10-M120-BF series offers high resistance to PID degradation, a power loss effect caused by potential differences within a system. This is a key advantage for large solar farms, where panels operate under high system voltage for extended periods, which could otherwise cause a noticeable drop in energy output over time with weaker PID resistance.
Can the HELOC PRO GS10-M120-BF panel withstand heavy snow loads and strong wind?
The module is engineered for high mechanical load resistance, including heavy snow and strong wind, supported by a robust frame and a sealed IP68 junction box that protects the electrical components from moisture. This makes the panel well suited both for residential rooftop installations and for harsher climate conditions.
Is Goldi Solar a reliable manufacturer, and is it worth investing in panels made in India?
Goldi Solar is classified as a Tier 1 manufacturer, indicating strong financial stability, large-scale production, and a position on the BloombergNEF bankability list. The company is headquartered in India and maintains production standards aligned with both domestic and export markets. Combined with the 25-year linear power warranty, it is a solid choice for investors focused on lower LCOE and long-term reliability.
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