--- title: "Hiwatt Solar HW-M12/132G-730 730W Solar Panel - Specs & Review | ComparePV" description: "Hiwatt Solar HW-M12/132G-730 730W solar panel. Specs: 23.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-730" updated: 2026-09-11 --- # Hiwatt Solar HW-M12/132G-730 Efficiency leader, short guarantee 420 panels in the segment TOPCon 700-750 W ## Identity - **Manufacturer:** Hiwatt Solar - **Model:** HW-M12/132G-730 - **Series:** HW-M12/132G(710-730) - **Rated power:** 730 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) | 730 W | 715 W | Strong - top 11% | | | Module efficiency | 23.50% | 23.00% | Strong - top 10% | 716 | | Power density | 235.0 | 230.2 | Strong - top 11% | 800 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 4% | 8,778 | | Weight (kg) | 38.7 kg | 38.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 1% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.50% | 23.00% | Strong - top 10% | 716 | | Power density | 235.0 | 230.2 | Strong - top 11% | 800 | | Temperature coefficient | -0.340 | -0.290 | Weak - bottom 4% | 8,778 | | Weight per kWp | 53.0 | 52.9 | Typical | 6,782 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 1% | 9,798 | ### Strengths - **23.50% module efficiency** - Top 10% of the TOPCon 700-750 W segment, against a median of 23.00%. - **235.0 watts per square metre** - Top 11% of the TOPCon 700-750 W segment, against a median of 230.2. ### Watch out for - **25 year performance warranty** - Bottom 1% of the TOPCon 700-750 W segment, against a median of 30 yrs. Ranked 9,798th in the whole database. - **-0.340 %/°C temperature coefficient** - Bottom 4% of the TOPCon 700-750 W segment, against a median of -0.290. Ranked 8,778th in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee and hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 730 W - **Efficiency:** 23.50 % - **Voltage at Pmax (Vmp):** 41.11 V - **Current at Pmax (Imp):** 17.76 A - **Open-circuit voltage (Voc):** 49.36 V - **Short-circuit current (Isc):** 18.81 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:** 132 - **Bifacial:** yes ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 38.7 kg - **Area:** 3.11 m2 - **Power density:** 235.0 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:** 599 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 716 of 14005 | | Power density | 800 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 6782 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **High N-type TOPCon cell efficiency** - Efficiency range of 22.86–23.5% places the series at the top of the 710–730 Wp segment, on par with direct competitors HY Solar N-Type TOPCon and PolyCrown Monocrystalline132 (both max 23.5%). N-type technology eliminates light-induced degradation (LID) inherent to P-type PERC cells, delivering a measurably higher annual yield throughout the system's lifetime. - **Bifacial design – albedo energy gain** - The bifacial module captures 5–15% additional energy from rear-side irradiance reflected off the ground (depending on albedo: white roofing membrane ~20%, white gravel ~35%, snow ~80%). In ground-mount systems with high albedo, the annual production advantage over an equivalent monofacial module can reach 70–100 kWh/kWp/year. - **Competitive temperature coefficient: -0.34%/°C** - A power temperature coefficient of -0.34%/°C outperforms the typical P-type PERC range (-0.35% to -0.40%/°C). At a module operating temperature of 65°C (40°C above STC), power loss is ~13.6%, versus ~14.0–16.0% for PERC — a measurable difference in annual yield for systems above 500 kWp. - **MBB technology – microcrack resistance** - Multi-busbar (MBB) cell interconnection combined with dense wiring reduces mechanical stress and slows microcrack propagation (PID-free, anti-LeTID). This improves long-term module durability under wind and snow loads and limits power binning spread across the five variants (710–730 Wp range). - **Active series – 2023 vintage, not discontinued** - The series was released in 2023 and remains in active production (discontinued = false), ensuring module availability for future system expansions and continuity of technical support. With a 25-year power warranty, ongoing production continuity is a critical project risk factor. ## Cons - **No BNEF Tier 1 status** - Hiwatt Solar does not appear on the BNEF Tier 1 Q1 2026 bankable manufacturers list. For projects financed by independent commercial banks (>1 MWp), the absence of Tier 1 status complicates or prevents project debt financing and may increase required warranty reserves. Direct competitor Waaree holds Tier 1 BNEF status. - **12-year product warranty** - The manufacturer offers a 12-year workmanship warranty, while leading premium-segment manufacturers (Longi, JA Solar, Jinko Solar) standardly provide 15 years. The 3-year gap is material for projects involving bank financing or equipment leasing, where warranty coverage directly affects risk assessments. - **Power warranty 84.8% at 25 years – below premium TOPCon** - The guaranteed minimum output of 84.8% after 25 years is mid-tier standard but below the thresholds offered by select premium TOPCon series (e.g., REC Alpha Pure-R: 92% at 25 years, Panasonic EverVolt: 92%). For investors modeling LCOE over a 25–30 year horizon, a 7+ percentage point difference in end-of-life output has real financial impact. ## About this series The Hiwatt Solar HW-M12/132G(710-730) series is comprised of modules designed for maximum energy generation from a given surface area - particularly in situations where every square meter counts. The use of **N-type TOPCon cells** results in low degradation over time and more stable performance over the long term, which simplifies investment return planning. Furthermore, the **bifacial design** allows for the utilization of reflected light from the ground, improving production in typical conditions on roofs of bright halls and ground-mounted installations. The **MBB technology and dense connections** also deserve attention, as they minimize losses and increase the module's resistance to microcracks. In practice, this means greater predictability of performance in more challenging mounting and climatic conditions. The series is suitable for PV farms, large industrial roofs, and projects where **better performance in low-light conditions** and higher productivity compared to standard monofacial modules are important. ## Notable figures - Efficiency of 23.5% matches the \*\*TOPCon 700-750W\*\* median - Power density of 235.0 W/m² packs 4.8 W/m² more into the same footprint vs \*\*TOPCon 700-750W\*\* median (230.2 W/m²) - At -0.34%/°C, loses 0.05pp more power per degree than \*\*TOPCon 700-750W\*\* median (-0.29%/°C) - #716 for efficiency, #8778 for temperature performance out of 14005 panels ## Questions ### What is the maximum power output of the Hiwatt Solar HW-M12/132G panels and what does it mean in practice? The HW-M12/132G series reaches a peak power of 730 Wp under STC test conditions. In practice, a single module can generate between 800 and over 1,000 kWh per year depending on location and tilt angle. This is a high output for an M12 132-cell module, meaning fewer panels are needed to reach a target system capacity. ### What is TOPCon technology in the HW-M12/132G series and why is it better than PERC? TOPCon is an N-type cell technology featuring a tunnel oxide layer and polysilicon passivation contact. Compared to mainstream PERC cells, it delivers higher efficiency (typically 22-24%), a lower temperature coefficient, and slower long-term degradation. For the HW-M12/132G series this means more stable output over the 25-year power warranty period and reduced energy yield loss in later decades. ### Do the bifacial Hiwatt Solar HW-M12/132G modules make sense on an industrial rooftop? Yes, especially on lighter surfaces such as white TPO membranes or light-colored gravel ballast. The bifacial design of the HW-M12/132G series captures light reflected off the roof, potentially adding 5-15% of production compared to a monofacial module. On elevated ground-mount systems the bifacial gain can be even higher. On dark bituminous roofing, the bifacial benefit will be minimal. ### What is the warranty on Hiwatt Solar HW-M12/132G modules and what does it cover? The manufacturer provides a 12-year product warranty covering physical defects and material failures, and a 25-year linear power warranty guaranteeing that the panel retains a specified percentage of its rated output. When purchasing, ask the distributor for a written warranty document and confirm that Hiwatt Solar handles claims through an authorized channel in Poland or the EU. ### Are the Hiwatt Solar HW-M12/132G panels compatible with popular inverter brands like SMA, Fronius, or Huawei? Yes, the HW-M12/132G modules are standard crystalline silicon panels with open-circuit voltage (Voc) and short-circuit current (Isc) values that fall within the input range of SMA, Fronius, Huawei, SolarEdge, and other inverters. Before designing the system, verify the maximum string voltage in the inverter's MPPT calculator — particularly for cold climates — and confirm the number of modules per string. ### Hiwatt Solar is not on the Tier 1 list — should that be a concern when buying these panels? The Tier 1 list primarily reflects a manufacturer's ability to finance bankable projects and is not a direct measure of product quality. Hiwatt Solar is a smaller manufacturer outside the top tier, which may raise questions about warranty support availability in 10-15 years. The risk can be reduced by purchasing through a distributor with a local warehouse in Poland or the EU and verifying warranty terms in writing before signing any agreement. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/mono-bifacial-710-730w-4db06a8d883b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +1.7 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, +1.5 pp, +5 yr warranty | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, +1.4 pp, +5 yr warranty | | [AIKO AIKO-A690-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a690-mae78dw) | 690 W | Cooler, +1.2 pp, +5 yr warranty | | [AIKO AIKO-A685-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a685-mae78dw) | 685 W | Cooler, +1.0 pp, +5 yr warranty | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | Cooler, +1.0 pp, +5 yr warranty | | [AIKO AIKO-A680-MAH78Dw](https://comparepv.com/panel/aiko-aiko-a680-mah78dw) | 680 W | -50 W, cooler, +5 yr warranty | | [Gokin GK-4-78HGBD-780M](https://comparepv.com/panel/gokin-gk-4-78hgbd-780m) | 780 W | +50 W, cooler, +5 yr warranty | | [AIKO AIKO-A780-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a780-grh78dw) | 780 W | +50 W, cooler, +5 yr warranty | | [Hiwatt Solar HW-M12/132H-650](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-650) | 650 W | -80 W, lighter, -2.6 pp | | [Hiwatt Solar HW-M12/132H-655](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-655) | 655 W | -75 W, lighter, -2.4 pp | | [Hiwatt Solar HW-M12/132H-660](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-660) | 660 W | -70 W, lighter, -2.3 pp | | [Hiwatt Solar HW-M12/132H-665](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-665) | 665 W | -65 W, lighter, -2.1 pp | | [Hiwatt Solar HW-M12/132H-670](https://comparepv.com/panel/hiwatt-solar-hw-m12-132h-670) | 670 W | -60 W, lighter, -1.9 pp | | [Hiwatt Solar HW-M12/132G-710](https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-710) | 710 W | -20 W, -0.6 pp | | [Hiwatt Solar HW-M12/132G-715](https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-715) | 715 W | -15 W, -0.5 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +75 W, cooler, +1.6 pp | --- Source: https://comparepv.com/panel/hiwatt-solar-hw-m12-132g-730 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.