--- title: "TCL Zhonghuan HSM-ND66-GK715 (IEC1500V) 715W Solar Panel - Specs & Review | ComparePV" description: "TCL Zhonghuan HSM-ND66-GK715 (IEC1500V) 715W solar panel. Specs: 22.90% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk715-iec1500v" updated: 2026-09-11 --- # TCL Zhonghuan HSM-ND66-GK715 (IEC1500V) Strong in heat, no clear weak spot 420 panels in the segment TOPCon 700-750 W ## Identity - **Manufacturer:** TCL Zhonghuan - **Model:** HSM-ND66-GK715 (IEC1500V) - **Series:** G12-66P - **Rated power:** 715 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 700-750 W (420 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 715 W | 715 W | Typical | | | Module efficiency | 22.90% | 23.00% | Typical | 2,359 | | Power density | 230.2 | 230.2 | Typical | 2,018 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 11% | 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 | 22.90% | 23.00% | Typical | 2,359 | | Power density | 230.2 | 230.2 | Typical | 2,018 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 11% | 1,309 | | Weight per kWp | 53.4 | 52.9 | Typical | 7,356 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 11% of the TOPCon 700-750 W segment, against a median of -0.290. - **Best for:** Utility-scale. ## Specification ### Electrical - **Rated power (Pmax):** 715 W - **Efficiency:** 22.90 % - **Voltage at Pmax (Vmp):** 40.89 V - **Current at Pmax (Imp):** 17.49 A - **Open-circuit voltage (Voc):** 48.92 V - **Short-circuit current (Isc):** 18.52 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:** TOPCon - **Cell count:** 132 - **Bifacial:** yes ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 38.2 kg - **Area:** 3.11 m2 - **Power density:** 230.2 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 % - **Output after 30 years:** 625 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2359 of 14005 | | Power density | 2018 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 7356 of 14005 | | Warranty | 21 of 14005 | ## About this series The TCL Zhonghuan G12-66P series is designed for projects where high energy production and a proven module structure are paramount. This panel features a **double-glass** and **bifacial** design, which maximizes the use of reflected light from the ground - effectively increasing energy yield without increasing the installation area. The use of **N-type cells in TOPCon technology** ensures stable performance over time and better resistance to typical degradation effects, which is crucial for investments with a long-term return horizon. In practice, the G12-66P stands out for its reliability in challenging conditions. This series is specifically targeted at PV farms and ground-mounted installations, where resistance to wind, dust, and environmental factors is essential. It is a good choice for developers and EPCs who want to combine **high power density** with easy integration into standard projects and predictable module performance over the years. ## Notable figures - At 22.9% efficiency, this panel is on par with typical \*\*TOPCon 700-750W\*\* modules - Power density of 230.2 W/m² matches the \*\*TOPCon 700-750W\*\* median - At -0.28%/°C, hot weather performance is typical for \*\*TOPCon 700-750W\*\* panels - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof - #2359 for efficiency, #1309 for temperature performance out of 14005 panels ## Questions ### What type of installation is the TCL Zhonghuan G12-66P series best suited for - ground-mount or rooftop? The G12-66P is designed primarily for large ground-mount installations and utility-scale PV farms, where resistance to wind, dust, and environmental loads matters, along with high power density per area. The glass-glass construction handles demanding field conditions well. It can also be used in larger commercial installations, though it is not a typical choice for small pitched residential roofs due to the size and weight of large-format G12 modules. ### What is the difference between the bifacial G12-66P panel and a standard monofacial panel? The bifacial G12-66P generates energy from both the front and rear side of the module. Thanks to the glass-glass construction, the rear side captures light reflected off the ground, such as light gravel, bright soil, or reflective sheeting, which meaningfully increases energy yield without expanding the installation area. The actual gain depends on ground albedo and mounting height, but typically falls in the range of a few to over a dozen percent more annual energy. ### What is TOPCon technology and why is it used in the G12-66P? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that delivers higher conversion efficiency, lower degradation over time, and more stable performance than older PERC-based solutions. N-type cells have lower sensitivity to light-induced degradation (LID) and LeTID, resulting in more predictable energy output throughout the system's lifetime - a key factor for investments with a long payback horizon. ### What warranty does TCL Zhonghuan offer on the G12-66P modules? The manufacturer offers a 15-year product warranty and a 30-year linear power output warranty. After 30 years of operation, the guaranteed performance is around 87.4% of the initial rated power, a result typical for modern N-type TOPCon modules and clearly better than older P-type technologies, which usually have higher annual degradation rates. ### What is the maximum power of the G12-66P panel, and how many panels are needed for a typical system? The maximum output of the G12-66P module is 725 Wp with efficiency up to 23.3%. Because of the high power per panel, fewer modules are needed to reach a given system capacity compared to panels rated at 400-450 Wp, lowering costs for mounting structures, cabling, and installation labor per kilowatt of installed capacity. ### Is TCL Zhonghuan a reliable manufacturer of solar panels? TCL Zhonghuan is one of the largest manufacturers of silicon wafers and solar modules in the world, headquartered in China, and classified as a Tier 1 manufacturer. This status reflects a stable financial position, large-scale production, and bankability for projects requiring external financing - an important factor for large PV farm investments and commercial installations that rely on lender-approved equipment. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/68ff53853ee3628e27cbeef1_TCL-TC-725-66-Wht-GG-UPP-c0fa0cdf20f0.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | -35 W, lighter, +2.3 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | -40 W, lighter, +2.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, lighter, +2.0 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | -45 W, lighter, +1.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | -45 W, lighter, +1.9 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | -45 W, lighter, +1.9 pp | | [TCL Zhonghuan HSM-ND66-GK700](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk700) | 700 W | -15 W, -0.4 pp | | [TCL Zhonghuan HSM-ND66-GK705](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk705) | 705 W | -10 W | | [TCL Zhonghuan HSM-ND66-GK710](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk710) | 710 W | Very close match | | [TCL Zhonghuan HSM-ND66-GK720 (IEC1500V)](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk720-iec1500v) | 720 W | Very close match | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +90 W, cooler, +2.2 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +85 W, cooler, +2.0 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +80 W, cooler, +1.9 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +75 W, cooler, +1.7 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +45 W, cooler, +1.6 pp | --- Source: https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gk715-iec1500v 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.