--- title: "TCL Zhonghuan HSM-ND66-GK725 725W Solar Panel - Specs & Review | ComparePV" description: "TCL Zhonghuan HSM-ND66-GK725 725W solar panel. Specs: 23.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk725" updated: 2026-09-11 --- # TCL Zhonghuan HSM-ND66-GK725 Space saver, no clear weak spot 90 panels in the segment N-type 700-750 W ## Identity - **Manufacturer:** TCL Zhonghuan - **Model:** HSM-ND66-GK725 - **Series:** G12-66P N-type Bifacial Double Glass Module - **Rated power:** 725 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 700-750 W (90 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 725 W | 710 W | Strong - top 11% | | | Module efficiency | 23.30% | 22.88% | Strong - top 11% | 1,017 | | Power density | 233.4 | 228.6 | Strong - top 11% | 936 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 19% | 1,309 | | Weight (kg) | 38.2 kg | 38.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.30% | 22.88% | Strong - top 11% | 1,017 | | Power density | 233.4 | 228.6 | Strong - top 11% | 936 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 19% | 1,309 | | Weight per kWp | 52.7 | 53.5 | Typical | 6,337 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **233.4 watts per square metre** - Top 11% of the N-type 700-750 W segment, against a median of 228.6. - **23.30% module efficiency** - Top 11% of the N-type 700-750 W segment, against a median of 22.88%. - **-0.280 %/°C temperature coefficient** - Top 19% of the N-type 700-750 W segment, against a median of -0.290. - **Best for:** Utility-scale, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 725 W - **Efficiency:** 23.30 % - **Voltage at Pmax (Vmp):** 41.27 V - **Current at Pmax (Imp):** 17.57 A - **Open-circuit voltage (Voc):** 49.36 V - **Short-circuit current (Isc):** 18.60 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.280 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 38.2 kg - **Area:** 3.11 m2 - **Power density:** 233.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 634 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1017 of 14005 | | Power density | 936 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 6337 of 14005 | | Warranty | 21 of 14005 | ## About this series The TCL Zhonghuan G12-66P N-type Bifacial Double Glass Module series sets new standards in efficiency thanks to the use of **large-format G12 silicon wafers** and advanced N-type technology. These modules effectively eliminate the problem of light-induced degradation, which translates into a significantly longer lifespan and more stable energy yield compared to traditional P-type panels. The use of a **bifacial double glass construction** allows for efficient additional energy harvesting from both sides of the module, which is crucial in ground-mounted installations and on surfaces with a high light reflection coefficient. As a result, investors can count on a faster return on investment, especially in demanding large-scale and industrial projects. These panels are distinguished by excellent resistance to harsh weather conditions, which guarantees **exceptional mechanical durability** and reliability for decades. The innovative N-type cell architecture also ensures better performance in low light and a more favorable temperature coefficient. This is a solution dedicated to professionals seeking **maximum power density** while simultaneously reducing total BOS system costs. By choosing these modules, you gain the certainty of stable operation and a clear technological advantage over standard solutions currently available on the Polish photovoltaic market. ## Notable figures - At 23.3% efficiency, this panel is on par with typical \*\*N-type 700-750W\*\* modules - At 233.4 W/m² power density, this panel generates 4.8 W/m² more per unit area than \*\*N-type 700-750W\*\* median (228.6 W/m²) - At -0.28%/°C, hot weather performance is typical for \*\*N-type 700-750W\*\* panels - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces - In the top 7% for efficiency among all N-type panels ## Questions ### What is the maximum power output and efficiency of the TCL Zhonghuan G12-66P N-type panels? Top variants of the G12-66P N-type series reach up to 725 Wp with a maximum efficiency of 23.3%. This is achieved through large-format G12 (210 mm) silicon wafers and N-type TOPCon cells, which use the module surface more effectively than conventional P-type panels of similar dimensions. ### How does N-type TOPCon technology in the G12-66P differ from traditional P-type panels? N-type cells in TOPCon modules eliminate light-induced degradation (LID), a common issue in boron-doped P-type cells. As a result, the module retains more power in its early years, performs better under low-light conditions, and has a more favorable temperature coefficient, leading to higher real-world annual energy yield. ### How much extra energy does bifacial construction add to these panels? The bifacial double glass design allows the module to capture additional energy from reflected light on its rear side. In ground-mounted installations on light-colored ground or gravel, this can add anywhere from a few percent up to over ten percent more output compared to a monofacial panel, depending on mounting height and ground albedo. ### What warranty comes with the TCL Zhonghuan G12-66P N-type panels? As a tier 1 manufacturer, TCL Zhonghuan provides a 15-year product warranty along with a 30-year linear power performance warranty, guaranteeing at least 99% of nominal power in the first year and a gradual, controlled decline afterward. This exceeds the standard coverage offered on many P-type panels currently on the market. ### Are the G12-66P N-type panels suitable for large-scale industrial and solar farm installations? Yes, the high power density enabled by large G12 wafers and the bifacial design make this series well suited for utility-scale projects, including solar farms and industrial installations. Fewer modules are needed to reach a given system capacity, which lowers BoS costs such as wiring, mounting structures, and installation labor. ### Is it worth choosing bifacial N-type panels over cheaper P-type modules? At a similar budget, N-type TOPCon panels typically deliver higher annual yield thanks to lower degradation and better low-light performance, while bifaciality adds further energy production without increasing the installation footprint. In utility-scale and industrial projects, this difference translates into a faster return on investment despite the higher upfront cost. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/6908413dfa0fb651177bb17e_VN_TCL_Ntype_Topcon-G12-66P-700-725-0a335bf57c40.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | -45 W, lighter, +1.9 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | -50 W, lighter, +1.7 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | -25 W, lighter, +1.7 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | -30 W, lighter, +1.6 pp | | [AIKO AIKO-A690-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a690-mae78dw) | 690 W | -35 W, lighter, +1.4 pp | | [AIKO AIKO-A685-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a685-mae78dw) | 685 W | -40 W, lighter, +1.2 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +35 W, cooler, +1.2 pp | | [AIKO AIKO-A680-MAH78Dw](https://comparepv.com/panel/aiko-aiko-a680-mah78dw) | 680 W | -45 W, lighter, +1.0 pp | | [TCL Zhonghuan HSM-ND66-GK700](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk700) | 700 W | -25 W, -0.8 pp | | [TCL Zhonghuan HSM-ND66-GK705](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk705) | 705 W | -20 W, -0.6 pp | | [TCL Zhonghuan HSM-ND66-GK710](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk710) | 710 W | -15 W, -0.4 pp | | [TCL Zhonghuan HSM-ND66-GK715 (IEC1500V)](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk715-iec1500v) | 715 W | -10 W, -0.4 pp | | [TCL Zhonghuan HSM-ND66-GK720 (IEC1500V)](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk720-iec1500v) | 720 W | -0.3 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +80 W, cooler, +1.8 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +75 W, cooler, +1.6 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +70 W, cooler, +1.5 pp | --- Source: https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk725 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.