--- title: "Hiwatt Solar HW-M10/144G-560 560W Solar Panel - Specs & Review | ComparePV" description: "Hiwatt Solar HW-M10/144G-560 560W solar panel. Specs: 21.68% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hiwatt-solar-hw-m10-144g-560" updated: 2026-09-11 --- # Hiwatt Solar HW-M10/144G-560 Middle of its segment, weak in heat 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Hiwatt Solar - **Model:** HW-M10/144G-560 - **Series:** HW-M10/144G(560-580) - **Rated power:** 560 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1018 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 560 W | 580 W | Weak - bottom 10% | | | Module efficiency | 21.68% | 22.44% | Weak - bottom 11% | 7,542 | | Power density | 216.8 | 224.4 | Weak - bottom 12% | 7,452 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 5% | 8,778 | | Weight (kg) | 32.0 kg | 31.2 kg | Weak - bottom 10% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 5% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.68% | 22.44% | Weak - bottom 11% | 7,542 | | Power density | 216.8 | 224.4 | Weak - bottom 12% | 7,452 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 5% | 8,778 | | Weight per kWp | 57.1 | 53.8 | Weak - bottom 10% | 11,052 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 5% | 9,798 | ### Watch out for - **-0.340 %/°C temperature coefficient** - Bottom 5% of the TOPCon 550-600 W segment, against a median of -0.290. Ranked 8,778th in the whole database. - **25 year performance warranty** - Bottom 5% of the TOPCon 550-600 W segment, against a median of 30 yrs. Ranked 9,798th in the whole database. - **57.1 kg per kWp** - Bottom 10% of the TOPCon 550-600 W segment, against a median of 53.8. - **Best for:** Commercial and utility-scale. - **Not ideal for:** Hot climates, owners who want a long output guarantee and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 560 W - **Efficiency:** 21.68 % - **Voltage at Pmax (Vmp):** 41.95 V - **Current at Pmax (Imp):** 13.35 A - **Open-circuit voltage (Voc):** 50.67 V - **Short-circuit current (Isc):** 14.17 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.0 kg - **Area:** 2.58 m2 - **Power density:** 216.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 459 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7542 of 14005 | | Power density | 7452 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 11052 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **N-type TOPCon technology with low degradation** - N-type TOPCon cells feature a temperature coefficient of approx. -0.34%/°C vs. typical -0.36%/°C for PERC, yielding measurably higher output on hot days. Low susceptibility to LID and LeTID degradation ensures more predictable performance over the module's lifetime — critical for LCOE modeling in commercial projects. - **Up to 22.45% efficiency — top-tier peer level** - The best variant in the series (580 Wp) reaches 22.45% module efficiency, matching the direct peer comparables Emmvee Titanium Duo (22.45%) and ZNShine ZXM7-UHLD144 (22.44%). Even the lowest-efficiency variant (21.68%) stays above the typical threshold for the 560 Wp segment. - **Bifacial: 80–85% bifaciality factor** - The bifacial TOPCon design achieves a bifaciality factor of 80–85%, compared to the standard ~70% for bifacial PERC modules. In ground-mount and light-colored rooftop installations, this translates to an additional 10–25% rear-side energy yield, lowering effective LCOE without increasing footprint. - **Positive power tolerance across all 5 variants** - All five variants (560–580 Wp) carry positive-only power tolerance, eliminating the risk of under-performing relative to the nameplate spec. This simplifies MPPT string sizing and reduces the safety margin designers must apply when dimensioning inverters. ## Cons - **Not BNEF Tier-1 (non-bankable)** - Hiwatt Solar does not appear on the BNEF bankable manufacturer list, which in practice excludes or complicates the use of these modules in independently bank-financed projects (typically >1 MW). Tier-1 competitors — Trina Solar, JA Solar, LONGi — impose no such constraint on institutional investors. - **12-year product warranty vs. 25 years from market leaders** - Hiwatt provides a 12-year product (workmanship) warranty, while Trina Solar and JinkoSolar (Tiger Neo) guarantee 25 years on the product itself. The 13-year gap may be material when calculating total service and replacement costs over a typical project financing horizon of 20–25 years. - **Small production scale — supply continuity risk** - Hiwatt Solar's annual production capacity is approx. 2.2 GW, while each of the top-5 manufacturers (Jinko, LONGi, JA Solar, Trina, Tongwei) exceeds 80 GW. For utility-scale orders above 5 MW, this may result in longer lead times or difficulty sourcing consistent bin-matched batches with tight electrical parameter variance. ## About this series The Hiwatt Solar HW-M10/144G (560-580) series consists of 144-cell modules designed for high power output from a single surface and stable energy production in challenging conditions. They stand out due to the combination of **TOPCon N-type technology** with a **bifacial design**, allowing the panel to also utilize reflected light from the ground - a real advantage where the roof or ground "works" with its albedo. This is a good solution for investors who want to maximize output without expanding their installations with additional modules. From an operational perspective, **low sensitivity to LID and LeTID degradation**, typical of N-type cells, is important, which translates into more predictable performance in subsequent years. Another advantage is **positive power tolerance**, which simplifies the design of installations without the risk of "underestimated" parameters compared to specifications. This series is suitable for commercial and industrial installations, PV farms, and large roofs, where power density and profitability per square meter are important. ## Notable figures - Module efficiency of 21.7% is 0.8pp below average for \*\*TOPCon 550-600W\*\* panels (median: 22.4%) - At 216.8 W/m², this panel generates 7.6 W/m² less per unit area than \*\*TOPCon 550-600W\*\* median (224.4 W/m²) - Temperature coefficient of -0.34%/°C is 0.05pp worse than \*\*TOPCon 550-600W\*\* median (-0.29%/°C) - higher losses in summer heat - In the top 54% for efficiency among all TOPCon panels ## Questions ### How much extra energy will my system generate thanks to the bifacial design of the Hiwatt Solar HW-M10/144G? The bifacial construction of the HW-M10/144G captures light reflected off the ground surface — light-colored rooftops, gravel, sand, or snow. In practice, rear-side gain ranges from a few percent up to 25-30% additional output under high-albedo conditions. The effect is most pronounced in ground-mounted utility farms and on bright industrial rooftops where the surface beneath the modules actively reflects solar radiation. ### What warranties come with the Hiwatt Solar HW-M10/144G series? The manufacturer provides a 12-year product warranty covering mechanical integrity and a 25-year linear power output warranty. N-type TOPCon technology ensures low degradation — typically under 1% in year one and around 0.4% per year thereafter — guaranteeing at least 84.8% of rated power is retained after 25 years of operation. ### What is TOPCon technology and why does it matter for the HW-M10/144G series? TOPCon (Tunnel Oxide Passivated Contact) uses an ultra-thin tunnel oxide layer on an N-type cell to minimize charge-carrier recombination. In the HW-M10/144G this results in module efficiency reaching approximately 23.2%, significantly lower LID and LeTID degradation than conventional PERC cells, and better low-light performance. It is currently the leading cell technology in the commercial and utility-scale PV segment. ### Are the Hiwatt Solar HW-M10/144G panels suitable for a solar farm or large industrial rooftop? Yes, the HW-M10/144G series is designed for commercial and utility-scale applications. A peak output of up to 580 Wp per module reduces the total number of modules per project, lowering BoS costs. Strong LID and LeTID resistance combined with positive power tolerance makes this module a reliable choice wherever predictable long-term energy yield is critical. ### Does the HW-M10/144G series perform well on overcast days or under high summer temperatures? Yes. N-type TOPCon cells maintain solid output under diffuse irradiance, so the panel continues generating electricity even on cloudy days. The power temperature coefficient is approximately -0.34%/°C — a more favorable value than typical PERC modules — meaning smaller output losses during hot summer weather when industrial rooftop surface temperatures can exceed 50°C. ### Does the Hiwatt Solar HW-M10/144G come with positive power tolerance, and what does that mean for my system? Yes, HW-M10/144G modules are supplied with positive power tolerance (0/+W), guaranteeing every panel delivers at least its rated peak power — the 580 Wp variant provides a minimum of 580 Wp under STC. For system designers this eliminates the risk of real-world output falling short of design calculations, which is especially important in large-scale PV farms where cumulative negative tolerances have a measurable financial impact. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/mono-bifacial-560-580-1-ae6da7fb32e7.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.1 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +2.9 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, 16 kg lighter, +2.7 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +2.7 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | Cooler, lighter, +2.7 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | Cooler, +2.6 pp, +5 yr warranty | | [Hiwatt Solar HW-M10/144H-530](https://comparepv.com/panel/hiwatt-solar-hw-m10-144h-530) | 530 W | -30 W, lighter, -1.2 pp | | [Hiwatt Solar HW-M10/144H-535](https://comparepv.com/panel/hiwatt-solar-hw-m10-144h-535) | 535 W | -25 W, lighter, -1.0 pp | | [Hiwatt Solar HW-M10/144H-540](https://comparepv.com/panel/hiwatt-solar-hw-m10-144h-540) | 540 W | -20 W, lighter, -0.8 pp | | [Hiwatt Solar HW-M10/144H-545](https://comparepv.com/panel/hiwatt-solar-hw-m10-144h-545) | 545 W | -15 W, lighter, -0.6 pp | | [Hiwatt Solar HW-M10/144H-550](https://comparepv.com/panel/hiwatt-solar-hw-m10-144h-550) | 550 W | -10 W, lighter, -0.4 pp | | [Hiwatt Solar HW-M10/144G-565](https://comparepv.com/panel/hiwatt-solar-hw-m10-144g-565) | 565 W | Very close match | | [Hiwatt Solar HW-M10/144G-570](https://comparepv.com/panel/hiwatt-solar-hw-m10-144g-570) | 570 W | +10 W, +0.4 pp | | [Hiwatt Solar HW-M10/144G-575](https://comparepv.com/panel/hiwatt-solar-hw-m10-144g-575) | 575 W | +15 W, +0.6 pp | | [Hiwatt Solar HW-M10/144G-580](https://comparepv.com/panel/hiwatt-solar-hw-m10-144g-580) | 580 W | +20 W, +0.8 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +90 W, cooler, +3.5 pp | --- Source: https://comparepv.com/panel/hiwatt-solar-hw-m10-144g-560 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.