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TCL Zhonghuan Brand review

HSM-BD72-WC645

645 Wp Back Contact
ComparePV verdict

Light for its output, no clear weak spot

Rank 1,008 of 14,129
Compare panels Datasheet PDF
Power (Wp)
645
Strong · top 12%
Efficiency (%)
23.90
Typical · median 23.70%
Density (Wp/m²)
238.8
Typical · median 236.9
Temp (%/°C)
-0.260
Typical · median -0.260
Weight (kg)
28.1
Strong · 4.2 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The TCL Zhonghuan G11RA-72P series introduces a new level of quality to the large-scale photovoltaics sector, basing its design on breakthrough G11 format silicon wafers. The use of such a large cell surface area allows for achieving unprecedented power density, which directly addresses the problem of high installation costs by reducing the number of required mountings and cabling. A key differentiator of the series is the advanced N-type TOPCon cell technology, which offers outstanding resistance to the LID degradation phenomenon and better efficiency in the diffuse light spectrum. These modules were designed for the most demanding industrial investments and solar farms, where the priority is achieving the lowest cost of energy (LCOE) throughout the entire power plant lifecycle. Compared to standard solutions, the G11RA-72P series is characterized by a significantly better temperature coefficient, which minimizes production drops during summer heat. The solid frame construction and high-transmittance tempered glass ensure maximum mechanical resistance to extreme weather events. It is a smart choice for professionals seeking innovation that combines high module performance with the optimization of profitability for large-scale PV projects.

Ranking

73 panels in the segment Back Contact 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.90% 23.70% Typical 378
Power density 238.8 236.9 Typical 383
Temperature coefficient -0.260 -0.260 Typical 515
Weight per kWp 43.6 50.4 Strong · top 12% 310
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

Utility-scale, commercial and hot-climate.

Strengths
43.6 kg per kWp

Top 12% of the Back Contact 600-650 W segment, against a median of 50.4.

Notes from the database
  • Efficiency of 23.9% matches the Back Contact 600-650W median
  • At 238.8 W/m² power density, roof space requirements are typical for Back Contact 600-650W panels
  • Temperature coefficient of -0.26%/°C matches the Back Contact 600-650W median
  • 28.1 kg weight - 4.2 kg lighter than Back Contact 600-650W median (32.3 kg), reducing installation effort
  • Ranked #378 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 645 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.90 % Typical Segment median 23.70%
Vmpp · Impp 45.00 V · 14.34 A Operating point at max power
Voc · Isc 54.30 V · 15.06 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 28.1 kg Strong Strong · 4.2 kg below median
Cells 144 · Back Contact Monocrystalline
Coefficient Pmax -0.260 %/°C Typical median -0.260 of its segment
Coefficient Voc · Isc -0.220 · 0.050 %/°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 88.8 % Equals 573 W guaranteed
Degradation 1.00 → 0.35 % 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 645 Wp appear here. The rest cover the whole series.

30-Year Linear Performance Warranty 30-Year Linear Performance Warranty 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
-

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

Heat losses
-0.260 %/°C against a segment median of -0.260
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
TCL Zhonghuan HSM-BD72-WC645 645 W 23.90% -0.260 28.1 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Lighter, +1.3 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +35 W, +1.3 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +30 W, +1.1 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Lighter, +1.1 pp
WST-675BKX72-A2 675 W 25.00% -0.260 32.1 kg +30 W, heavier, +1.1 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +50 W, heavier, +1.0 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +25 W, +0.9 pp
HSM-ND66-GR605 605 W 22.40% -0.290 33.0 kg -40 W, heavier, -1.5 pp
HSM-ND66-GR610 610 W 22.60% -0.280 32.6 kg -35 W, heavier, -1.3 pp
HSM-ND66-GR615 615 W 22.80% -0.280 32.6 kg -30 W, heavier, -1.1 pp
HSM-ND66-GR620 620 W 23.00% -0.280 32.6 kg -25 W, heavier, -0.9 pp
HSM-ND66-GR625 625 W 23.10% -0.280 32.6 kg Hotter, heavier, -0.8 pp
HSM-ND66-GR630 630 W 23.30% -0.280 32.6 kg Hotter, heavier, -0.6 pp
HSM-ND66-GR635 635 W 23.50% -0.280 32.6 kg Hotter, heavier, -0.4 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +55 W, heavier, +1.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +25 W, +0.9 pp

Found 1144 panels of the same or similar size to this one, within ±10 mm. See them here Found 1150 panels of the same or similar size to this one, within ±25 mm. See them here Found 1261 panels of the same or similar size to this one, within ±50 mm. See them here Found 1942 panels of the same or similar size to this one, within ±100 mm. See them here

About the G11RA-72P series

6 answered

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

How does Back Contact technology in the TCL Zhonghuan G11RA-72P differ from standard N-TOPCon panels?
In Back Contact modules, all electrical contacts are moved to the rear side of the cell, so the front surface is not shaded by busbars or metallization grids. This increases the active cell area and delivers higher efficiency from the same G11 wafer size compared to standard N-TOPCon modules with visible front-side metallization.
What is the maximum output power of the G11RA-72P series, and how many panels are needed for a 10 kWp system?
The G11RA-72P panels reach a maximum power of 665 Wp. Building a roughly 10 kWp system requires about 15 modules, far fewer than with older 400-450 Wp panels, which meaningfully reduces mounting structure and cabling costs.
What warranty does TCL Zhonghuan offer on the G11RA-72P series?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means that even after three decades of operation, the panel should retain a high percentage of its original output, which matters for calculating the ROI of an industrial-scale investment.
Are the G11RA-72P panels bifacial modules?
No, the G11RA-72P series consists of mono-facial modules, not bifacial. The design focuses on maximizing front-side power output through Back Contact technology, so it does not rely on additional rear-side light gain as bifacial modules do.
Is it worth choosing G11-format wafers over smaller ones for large-scale solar farms?
Yes, for solar farms and industrial-scale projects, the larger G11 wafer format delivers higher power per module, meaning fewer panels, mounting brackets, and cable connections are needed for the same system capacity. This shortens installation time and lowers the overall LCOE across the plant's lifetime.
Is TCL Zhonghuan a Tier 1 manufacturer, and where is the G11RA-72P produced?
Yes, TCL Zhonghuan is a Tier 1 manufacturer, reflecting its financial stability and large-scale production capacity. Its factories are located in China, and the company ranks among the world's largest silicon wafer producers, giving it full quality control over raw materials starting from G11 cell production.
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