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TCL Zhonghuan HSM-ND66-GR625
TCL Zhonghuan Brand review

HSM-ND66-GR625

625 Wp TOPCon Bifacial 80%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 1,869 of 14,005
Compare panels Datasheet PDF
Power (Wp)
625
Typical for its class
Efficiency (%)
23.10
Typical · median 22.80%
Density (Wp/m²)
231.4
Typical · median 227.7
Temp (%/°C)
-0.280
Strong · top 7%
Weight (kg)
32.6
Typical · median 32.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The TCL Zhonghuan G12R-66P series is a breakthrough in roof area optimization thanks to the use of rectangular silicon cells. This innovative approach allows for maximum power density without the need to drastically increase the physical dimensions of the module. Utilizing advanced N-type TOPCon technology, these panels effectively eliminate the problem of light-induced degradation, which translates into stable yields for decades. This solution is a response to the needs of homeowners with complex roof architecture, where every square centimeter counts. The optimized G12R format ensures a better fit with standard mounting systems, which significantly lowers construction costs and shortens the work time of installers. Compared to traditional square cells, this series offers higher energy density and better efficiency in low-light conditions. An excellent temperature coefficient ensures that the modules maintain high production even in full sun. This is a proposal for demanding users for whom maximum efficiency per square meter is a key selection criterion. By choosing this series, the investor gains modern technology that redefines the standards of profitability for photovoltaic systems on the Polish market.

Ranking

1,086 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.10% 22.80% Typical 1,570
Power density 231.4 227.7 Typical 1,513
Temperature coefficient -0.280 -0.290 Strong · top 7% 1,309
Weight per kWp 52.2 53.1 Typical 5,626
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 0 caution
Best for

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

Strengths
-0.280 %/°C temperature coefficient

Top 7% of the TOPCon 600-650 W segment, against a median of -0.290. Ranked 1,309th in the whole database.

Notes from the database
  • Efficiency of 23.1% matches the TOPCon 600-650W median
  • Power density of 231.4 W/m² packs 3.7 W/m² more into the same footprint vs TOPCon 600-650W median (227.7 W/m²)
  • At -0.28%/°C, hot weather performance is typical for TOPCon 600-650W panels
  • 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
  • Ranked #1570 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 625 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.10 % Typical Segment median 22.80%
Vmpp · Impp 41.18 V · 15.18 A Operating point at max power
Voc · Isc 49.16 V · 16.10 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2382×1134×30 mm · 2.70 m² of roof
Weight 32.6 kg Typical Typical · median 32.7 kg
Cells 132 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.280 %/°C Strong top 7% of its segment
Coefficient Voc · Isc -0.240 · 0.045 %/°C
NOCT 43 °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 546 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by TCL Zhonghuan in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 625 Wp appear here. The rest cover the whole series.

I-V Curves (625W) I-V Curves (625W) 625 W

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
-0.280 %/°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.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
TCL Zhonghuan HSM-ND66-GR625 625 W 23.10% -0.280 32.6 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +25 W, lighter, +2.1 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +50 W, lighter, +1.9 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +1.9 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +45 W, lighter, +1.7 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +45 W, lighter, +1.7 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, lighter, +1.7 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +45 W, cooler, +1.7 pp
HSM-ND66-GR605 605 W 22.40% -0.290 33.0 kg -20 W, -0.7 pp
HSM-ND66-GR610 610 W 22.60% -0.280 32.6 kg -15 W, -0.5 pp
HSM-ND66-GR615 615 W 22.80% -0.280 32.6 kg -10 W, -0.3 pp
HSM-ND66-GR620 620 W 23.00% -0.280 32.6 kg Very close match
HSM-ND66-GR630 630 W 23.30% -0.280 32.6 kg Very close match
HSM-ND66-GR635 635 W 23.50% -0.280 32.6 kg +10 W, +0.4 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +55 W, lighter, +2.1 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +75 W, cooler, +1.9 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +70 W, cooler, +1.8 pp

Found 1119 panels of the same or similar size to this one, within ±10 mm. See them here Found 1125 panels of the same or similar size to this one, within ±25 mm. See them here Found 1236 panels of the same or similar size to this one, within ±50 mm. See them here Found 1917 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does the TCL Zhonghuan G12R-66P differ from panels with square G12 cells?
The key difference is the shape of the silicon cells - the G12R-66P series uses rectangular cells instead of square ones, allowing for a narrower, longer module format. This lets the panel fit more efficiently into standard mounting systems while the manufacturer achieves higher output (up to 635 Wp) without significantly increasing the module footprint, resulting in higher power density per roof area.
What warranty comes with the TCL Zhonghuan G12R-66P panels?
The manufacturer provides a 15-year product warranty and a 30-year linear power performance warranty. This means that after 30 years of operation, the panel is guaranteed to retain a specified minimum percentage of its original rated power output, which is a standard offering for top-tier N-type TOPCon modules on the market today.
What is N-type TOPCon technology and why does it matter in this series?
TOPCon (Tunnel Oxide Passivated Contact) is a next-generation N-type cell technology that reduces electron recombination and eliminates light-induced degradation (LID), an issue common in older P-type cells. As a result, G12R-66P panels achieve higher efficiency, lower first-year power loss, and more stable energy yield throughout the entire lifespan of the system.
Are the G12R-66P panels bifacial, and is it worth it?
Yes, the G12R-66P series uses bifacial technology, generating additional power from the rear side of the module using reflected light from the surrounding surface. In practice this can add several to over ten percent extra energy yield, particularly with a light-colored ground surface (e.g., gravel, white roofing) or in ground-mount and carport installations where the back side is exposed.
Are TCL Zhonghuan G12R-66P panels suitable for complex residential roofs?
Yes, the G12R format was specifically designed to fit narrow roof planes and irregular surfaces common on single-family homes. The rectangular cell shape lets installers arrange module rows more efficiently, minimizing wasted roof area and reducing installation time compared to traditional square-cell panels.
Is it worth choosing a Tier 1 manufacturer like TCL Zhonghuan when buying solar panels?
TCL Zhonghuan holds Tier 1 manufacturer status, reflecting financial stability, large-scale production capacity, and a proven track record of supplying modules for major projects worldwide. For investors, this translates into greater confidence in the fulfillment of the long-term 30-year power warranty and lower risk of service or replacement-part availability issues down the line.
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