--- title: "TCL Zhonghuan HSM-ND66-GR610 610W Solar Panel - Specs & Review | ComparePV" description: "TCL Zhonghuan HSM-ND66-GR610 610W solar panel. Specs: 22.60% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gr610" updated: 2026-09-11 --- # TCL Zhonghuan HSM-ND66-GR610 Strong in heat, no clear weak spot 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** TCL Zhonghuan - **Model:** HSM-ND66-GR610 - **Series:** G12R-66P - **Rated power:** 610 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 610 W | 620 W | Typical | | | Module efficiency | 22.60% | 22.80% | Typical | 3,658 | | Power density | 225.8 | 227.7 | Typical | 3,729 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 7% | 1,309 | | Weight (kg) | 32.6 kg | 32.7 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.60% | 22.80% | Typical | 3,658 | | Power density | 225.8 | 227.7 | Typical | 3,729 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 7% | 1,309 | | Weight per kWp | 53.4 | 53.1 | Typical | 7,368 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### 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. - **Best for:** Commercial, utility-scale, shaded-installations and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 610 W - **Efficiency:** 22.60 % - **Voltage at Pmax (Vmp):** 40.59 V - **Current at Pmax (Imp):** 15.03 A - **Open-circuit voltage (Voc):** 48.50 V - **Short-circuit current (Isc):** 15.95 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:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.6 kg - **Area:** 2.70 m2 - **Power density:** 225.8 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:** 533 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3658 of 14005 | | Power density | 3729 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 7368 of 14005 | | Warranty | 21 of 14005 | ## About this series 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. ## Notable figures - At 22.6% efficiency, this panel is on par with typical \*\*TOPCon 600-650W\*\* modules - Power density of 225.8 W/m² matches the \*\*TOPCon 600-650W\*\* median - 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 #3658 out of 14005 panels for efficiency in the database ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/69084180945a4b970c21a74e_VN_TCL_Ntype_Topcon-G12R-66P-615-650-ec673bb52529.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +40 W, lighter, +2.6 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +35 W, lighter, +2.4 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | -50 W, lighter, +2.2 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +30 W, lighter, +2.2 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +25 W, lighter, +2.0 pp | | [Longi Solar LR8-66HVD-660M](https://comparepv.com/panel/longi-lr8-66hvd-660m) | 660 W | +50 W, cooler, +1.8 pp | | [TCL Zhonghuan HSM-ND66-GR605](https://comparepv.com/panel/tcl-hsm-nd66-gr605) | 605 W | -0.2 pp | | [TCL Zhonghuan HSM-ND66-GR615](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gr615) | 615 W | Very close match | | [TCL Zhonghuan HSM-ND66-GR620](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gr620) | 620 W | +10 W, +0.4 pp | | [TCL Zhonghuan HSM-ND66-GR625](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gr625) | 625 W | +15 W, +0.5 pp | | [TCL Zhonghuan HSM-ND66-GR630](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gr630) | 630 W | +20 W, +0.7 pp | | [TCL Zhonghuan HSM-ND66-GR635](https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gr635) | 635 W | +25 W, +0.9 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +70 W, lighter, +2.6 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +65 W, lighter, +2.4 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +90 W, cooler, +2.4 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +85 W, cooler, +2.3 pp | --- Source: https://comparepv.com/panel/tcl-zhonghuan-hsm-nd66-gr610 Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.