--- title: "Tongwei TWMNH-48HC445 445W Solar Panel - Specs & Review | ComparePV" description: "Tongwei TWMNH-48HC445 445W solar panel: 2 shop offers from 318.37 zł. Specs: 22.30% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/tongwei-twmnh-48hc445" updated: 2026-10-08 --- # Tongwei TWMNH-48HC445 Strong in heat, no clear weak spot 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Tongwei - **Model:** TWMNH-48HC445 - **Series:** TWMNH Bifacial Full-black Module (48) - **Rated power:** 445 W - **Cell technology:** TOPCon - **Bifacial:** yes ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [Sklep Soltech](https://comparepv.com/go/5014) | Poland | 318.37 zł net | 715.44 zł/kWp | Not stated | Last read 8 Oct 03:44 | | [PVhurt](https://comparepv.com/go/3189) | Poland | 393.71 zł incl. VAT | 884.74 zł/kWp | In stock | Last read 8 Oct 01:41 | ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 445 W | 435 W | Strong - top 8% | | | Module efficiency | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.7 | 220.2 | Typical | 5,302 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,309 | | Weight (kg) | 20.9 kg | 22.0 kg | Strong - top 10% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.00% | Strong - top 17% | 5,100 | | Power density | 222.7 | 220.2 | Typical | 5,302 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 4% | 1,309 | | Weight per kWp | 47.0 | 51.4 | Strong - top 10% | 1,433 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 4% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 1,309th in the whole database. - **47.0 kg per kWp** - Top 10% of the TOPCon 400-450 W segment, against a median of 51.4. Ranked 1,433rd in the whole database. - **22.30% module efficiency** - Top 17% of the TOPCon 400-450 W segment, against a median of 22.00%. - **Best for:** Residential and hot-climate. ## Specification ### Electrical - **Rated power (Pmax):** 445 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 29.90 V - **Current at Pmax (Imp):** 14.89 A - **Open-circuit voltage (Voc):** 34.85 V - **Short-circuit current (Isc):** 16.00 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:** 0.046 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 96 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1762 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 20.9 kg - **Area:** 2.00 m2 - **Power density:** 222.7 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:** 389 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5100 of 14005 | | Power density | 5302 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 1433 of 14005 | | Warranty | 21 of 14005 | ## About this series Photovoltaic panels from the Tongwei TWMNH Bifacial Full-black Module (48) series set a new standard in the premium segment, combining uncompromising aesthetics with advanced **N-type TOPCon** technology. Their uniqueness lies in the use of a bifacial design in an all-black version, which allows for generating additional energy from reflected radiation while maintaining an elegant roof appearance. Thanks to a smaller format based on 48 cells, these modules are perfect for complex roof surfaces where every centimeter of space and ease of maneuvering during installation matters. A key differentiator is the exceptional **resistance to LID and LeTID degradation**, which translates into a significantly higher energy yield in the long term compared to standard P-type cells. The use of **bifaciality** technology makes these panels an excellent choice for demanding prosumers looking for a solution that performs great even in low-light conditions. This solution eliminates the problem of compromise between performance and design, offering **low temperature coefficients** that guarantee stable operation on hot days. Investing in this series ensures the use of the latest achievements in materials engineering, which effectively shorten the payback period of the installation. ## Notable figures - At 22.3% efficiency, this panel is on par with typical \*\*TOPCon 400-450W\*\* modules - Power density of 222.7 W/m² matches the \*\*TOPCon 400-450W\*\* median - Temperature coefficient of -0.28%/°C matches the \*\*TOPCon 400-450W\*\* median - 20.9 kg weight - 1.1 kg lighter than \*\*TOPCon 400-450W\*\* median (22.0 kg), reducing installation effort - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof ## Questions ### Is the Tongwei TWMNH Bifacial Full-black Module (48) series still available for purchase? No, the TWMNH Bifacial Full-black Module (48) series has been discontinued by Tongwei. This model was gradually phased out in favor of newer generation TOPCon modules with higher unit power output. Availability is now limited to remaining distributor stock, so it's worth checking current stock with your supplier before planning a larger installation based solely on this model. ### What warranty comes with the Tongwei TWMNH Bifacial Full-black Module (48) panels? The manufacturer provides a 15-year product warranty and a 30-year linear power output warranty, typical for premium N-type TOPCon modules. This means protection against manufacturing defects for 15 years, plus a guaranteed, gradually declining power output over three decades of operation—an important factor when calculating the payback period of a PV investment. ### Is the 48-cell TWMNH module format suitable for small or complex roofs? Yes, the smaller 48-cell format (dimensions approx. 1762×1134 mm, weight approx. 21 kg) makes installation easier on complex roof surfaces with dormers, chimneys, or skylights. The compact dimensions make the panel easier to maneuver during installation and allow better use of limited roof space compared to standard 72- or 144-cell modules. ### Does bifacial technology in the TWMNH panels actually increase energy production? Yes, thanks to the double-sided design, TWMNH panels capture additional energy from light reflected off the ground, roof, or snow, resulting in higher yield than conventional monofacial modules, especially over high-albedo surfaces. The exact energy gain depends on surrounding albedo and mounting height, but in typical residential conditions it can add several percent to annual output. ### How do Tongwei TWMNH panels perform during hot weather and on hot roof surfaces? These modules feature a low power temperature coefficient, typical of N-type TOPCon technology, so they lose less efficiency as cell temperature rises compared to conventional P-type panels. In practice, this means more stable energy output on hot summer days, when roof surface temperature can significantly exceed ambient temperature. ### How does the TOPCon technology used in the TWMNH series differ from older PERC cells? The N-type TOPCon cells used in the TWMNH series offer higher resistance to LID and LeTID degradation than traditional P-type PERC cells, resulting in higher and more stable energy yield over the long term. This technology also delivers higher base efficiency and better performance in low-light conditions and elevated temperatures. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/8e145e6d95a1d4a9d62cb92a480f6a22-1daf13b9b427.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +45 W, cooler, +2.2 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +45 W, cooler, +2.2 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +40 W, cooler, +2.0 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +40 W, cooler, +2.0 pp | | [Longi Solar LR7-54HJD-495M](https://comparepv.com/panel/longi-lr7-54hjd-495m) | 495 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +40 W, cooler, +2.0 pp | | [Tongwei TWMNH-48HD430](https://comparepv.com/panel/tongwei-twmnh-48hd430) | 430 W | -15 W, -0.8 pp | | [Tongwei TWMNH-48HD435](https://comparepv.com/panel/tongwei-twmnh-48hd435) | 435 W | -10 W, -0.5 pp | | [Tongwei TWMNH-48HD440](https://comparepv.com/panel/tongwei-twmnh-48hd440) | 440 W | -0.3 pp | | [Tongwei TWMNH-48HD450](https://comparepv.com/panel/tongwei-solar-twmnh-48hd450) | 450 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +65 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +60 W, cooler, +2.4 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +55 W, cooler, +2.2 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +55 W, cooler, +2.2 pp | --- Source: https://comparepv.com/panel/tongwei-twmnh-48hc445 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.