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HY SOLAR HY-NT12/60GDF-645
HY SOLAR Brand review

HY-NT12/60GDF-645

645 Wp TOPCon Bifacial 80%
ComparePV verdict

Solid all-round for its segment

Rank 1,687 of 14,005
Compare panels Datasheet PDF
Power (Wp)
645
Strong · top 3%
Efficiency (%)
22.80
Typical · median 22.80%
Density (Wp/m²)
227.9
Typical · median 227.7
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
34.9
Typical · median 32.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The HY SOLAR N-Type TOPCon series (available in various configurations and frame options) is designed for real-world operating conditions, where stable performance, predictability, and energy loss resistance are paramount. A key advantage is the use of N-Type TOPCon cell technology, which supports high efficiency over the long term and helps to minimize performance degradation typical of older solutions. Many variants feature a bifacial design, allowing the module to also utilize reflected light from the ground, which improves energy production in PV farms, ground-mounted systems, and PV+ projects.

The use of SMBB and half-cut cell technology also enhances current flow within the module and improves performance under partial shading. The manufacturer also highlights improved performance in low-light conditions and the beneficial impact of a lower temperature coefficient on energy yield in hot weather. This series is ideal for investors who want to combine high power density with practical reliability in commercial and industrial projects.

Ranking

1,086 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.80% 22.80% Typical 2,714
Power density 227.9 227.7 Typical 2,773
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 54.1 53.1 Typical 8,333
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 1 caution
Best for

Commercial, utility-scale, shaded-installations and hot-climate.

What owners get
Efficiency up to 23.8% — above peer group

Peak module efficiency reaches 23.8%, while directly comparable series (Huasun Himalaya V-ocean, Phono Solar Monocrystalline132, Recom Lynx) top out at 23.5%. The 0.3 percentage-point advantage translates into higher power density for the same roof or ground area.

Low temperature coefficient of -0.29%/°C

A temperature coefficient of -0.29%/°C compares favorably to typical PERC modules (-0.34% to -0.37%/°C) and is on par with leading N-type TOPCon products on the market. In real-world conditions where module temperatures can reach 65–70°C during summer, the difference yields measurably higher daily energy output at peak season.

Bifaciality of 80–85% — effective bifacial performance

A bifaciality factor of 80–85% enables efficient harvesting of reflected albedo in ground-mounted farms and agrivoltaic systems. On high-albedo surfaces (albedo >20%), installations can expect an additional 5–12% energy yield compared to standard monofacial modules.

30-year power warranty, degradation ≤0.4%/year

The manufacturer guarantees ≥87.40% of rated power output after 30 years, with annual degradation ≤0.4% (≤1% in year one). This aligns with best-in-class TOPCon market standards and gives investors confidence in long-term financial models without applying an accelerated degradation discount.

Broad lineup — 86 variants, 445–730 Wp

Availability of 86 power variants ranging from 445 to 730 Wp allows module selection across a wide range of project formats — from BIPV applications and small industrial rooftops to large utility-scale ground-mounted farms — without switching manufacturers within a project portfolio.

Trade-offs
No BNEF Tier-1 status (non-bankable)

HY SOLAR does not appear on the BloombergNEF Tier-1 list (Q1 2026), meaning it lacks confirmed bankability in the context of non-recourse project financing. For bank-financed commercial and industrial projects, this may require additional product insurance or escrow arrangements that Tier-1 manufacturers — such as peer competitor Phono Solar — do not necessitate.

Notes from the database
  • At 22.8% efficiency, this panel is on par with typical TOPCon 600-650W modules
  • At 227.9 W/m² power density, roof space requirements are typical for TOPCon 600-650W panels
  • At -0.29%/°C, hot weather performance is typical for TOPCon 600-650W panels
  • Weight of 34.9 kg is 2.2 kg above TOPCon 600-650W median (32.7 kg) - verify structural support
  • 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 645 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.80 % Typical Segment median 22.80%
Vmpp · Impp 36.80 V · 17.60 A Operating point at max power
Voc · Isc 44.38 V · 18.30 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2172×1303×33 mm · 2.83 m² of roof
Weight 34.9 kg Typical Typical · median 32.7 kg
Cells 108 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.240 · 0.043 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 564 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by HY SOLAR in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 645 Wp appear here. The rest cover the whole series.

Lower Degradation (annual degradation ≤0.40%) Lower Degradation (annual degradation ≤0.40%) Whole series IEC61215 requirements 5% IEC61215 requirements 5% Whole series

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
-
With bifacial gain
-

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

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Alternatives

All HY SOLAR panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
HY SOLAR HY-NT12/60GDF-645 645 W 22.80% -0.290 34.9 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +2.4 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +35 W, lighter, +2.4 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +30 W, lighter, +2.2 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +2.2 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +50 W, cooler, +2.1 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +2.0 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg Cooler, lighter, +2.0 pp
HY-NT12/60GDF-635 635 W 22.40% -0.290 34.9 kg -10 W, -0.4 pp
HY-NT12/60H-640 640 W 22.60% -0.290 30.6 kg Lighter
HY-NT12/60H-650 650 W 23.00% -0.290 30.6 kg Lighter
HY-NT12/60H-655 655 W 23.10% -0.290 30.6 kg +10 W, lighter, +0.3 pp
HY-NT12/60H-660 660 W 23.30% -0.290 30.6 kg +15 W, lighter, +0.5 pp
GKA210N120 680 W 24.03% -0.340 28.0 kg Hotter, lighter, +1.2 pp
GKA210N120-675 675 W 23.85% -0.340 28.0 kg Hotter, lighter, +1.1 pp
QN-670HJT-01 670 W 23.70% -0.240 35.5 kg +25 W, cooler, +0.9 pp
GKA210N120-670 670 W 23.67% -0.340 28.0 kg Hotter, lighter, +0.9 pp

Found 497 panels of the same or similar size to this one, within ±10 mm. See them here Found 502 panels of the same or similar size to this one, within ±25 mm. See them here Found 502 panels of the same or similar size to this one, within ±50 mm. See them here Found 506 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is the warranty on HY SOLAR N-Type TOPCon series panels?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means the panel is guaranteed to retain a specified percentage of its rated output for three decades. This warranty structure is standard for commercial and industrial-grade modules and is an important input when calculating the overall system LCOE.
How does TOPCon technology differ from older PERC cells, and is it worth the premium?
TOPCon (Tunnel Oxide Passivated Contact) uses N-type silicon with a thin tunnel oxide layer that reduces carrier recombination and enables higher cell efficiency than PERC. N-type cells also exhibit lower LID (Light Induced Degradation), meaning less power loss in the first months of operation. In the HY SOLAR TOPCon series this translates to up to 730 Wp peak output and better long-term energy yield.
Does bifacial design on HY SOLAR TOPCon panels actually boost energy production, and under what conditions?
Yes, the bifacial design harvests albedo light reflected from the ground surface. On ground-mounted utility-scale plants with light-colored gravel, white EPDM membranes, or snow cover, rear-side generation typically adds 5–15% compared to a monofacial module. The gain is minimal on dark rooftops, so bifacial performance is most valuable in utility-scale, solar tracker, and PV+ project configurations.
How does the HY SOLAR TOPCon series perform under partial shading from a chimney or nearby tree?
The combination of half-cut cell technology and SMBB (Super Multi-Busbar) splits the module into two independent electrical circuits. Shading one half of the panel affects only that section's output rather than the entire module, as would happen with a standard full-cell design. This makes the series a practical choice for rooftops or sites where full unobstructed irradiance throughout the day is not guaranteed.
Do HY SOLAR TOPCon panels maintain efficiency during hot weather, or does heat reduce their output significantly?
N-type TOPCon technology offers a more favorable temperature coefficient than conventional PERC modules, resulting in less power loss as cell temperature rises. On hot summer days, a TOPCon panel will deliver more energy than a same-rated PERC module under identical conditions. This advantage is especially relevant for commercial and industrial installations in warmer European climates or on poorly ventilated surfaces.
Is HY SOLAR a Tier 1 manufacturer, and what does that mean for the warranty?
HY SOLAR is not currently listed as a Tier 1 manufacturer by BloombergNEF, which does not automatically indicate poor product quality but does introduce additional counterparty risk on warranty claims. Before purchasing, verify that the specific model holds IEC 61215 and IEC 61730 certification, confirm that an authorized service partner is available in your country, and review the distributor's warranty fulfillment terms in detail.
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