--- title: "Hiwatt Solar HW-M12/110H-545 545W Solar Panel - Specs & Review | ComparePV" description: "Hiwatt Solar HW-M12/110H-545 545W solar panel. Specs: 20.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hiwatt-solar-hw-m12-110h-545" updated: 2026-09-11 --- # Hiwatt Solar HW-M12/110H-545 Strong in heat, short guarantee 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** Hiwatt Solar - **Model:** HW-M12/110H-545 - **Series:** HW-M12/110H - **Rated power:** 545 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 545 W | 535 W | Strong - top 12% | | | Module efficiency | 20.90% | 20.90% | Typical | 10,072 | | Power density | 208.6 | 209.0 | Typical | 10,324 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 23% | 8,778 | | Weight (kg) | 28.6 kg | 28.4 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.90% | 20.90% | Typical | 10,072 | | Power density | 208.6 | 209.0 | Typical | 10,324 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 23% | 8,778 | | Weight per kWp | 52.5 | 53.0 | Typical | 6,029 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Strengths - **-0.340 %/°C temperature coefficient** - Top 23% of the PERC 500-550 W segment, against a median of -0.350. ### Watch out for - **25 year performance warranty** - Bottom 23% of the PERC 500-550 W segment, against a median of 30 yrs. - **Best for:** Hot roofs and southern climates. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 20.90 % - **Voltage at Pmax (Vmp):** 31.40 V - **Current at Pmax (Imp):** 17.37 A - **Open-circuit voltage (Voc):** 37.70 V - **Short-circuit current (Isc):** 18.47 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:** PERC - **Cell count:** 110 ### Physical - **Length:** 2384 mm - **Width:** 1096 mm - **Thickness:** 35 mm - **Weight:** 28.6 kg - **Area:** 2.61 m2 - **Power density:** 208.6 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:** 447 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10072 of 14005 | | Power density | 10324 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 6029 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **TOPCon N-type + Half-Cut + MBB** - The combination of N-type TOPCon cells, a 110-cell half-cut layout, and Multi-Busbar (MBB) technology delivers lower Light-Induced Degradation (LID) than P-type PERC, improved partial-shading tolerance, and shorter current paths. In practice this translates into higher annual energy yield and reduced micro-crack risk. - **Up to 555 Wp and 21.2% efficiency** - The 535–555 Wp power range in M12 (182 mm) format positions the series firmly in the competitive 550 W-class segment. Peak efficiency of 21.2% is market-competitive, though marginally below direct Tier-1 peers (ET Solar Elite PLUS 21.4%, JA Solar DEEP BLUE 3.0 21.5%). - **High mechanical durability** - Modules are rated for snow loads up to 5,400 Pa and wind loads up to 2,400 Pa (per ENF Solar / SolarFeeds datasheet listings), meeting Polish structural norms PN-EN 1991-1-3 for snow zones IV and V. The robust aluminum frame minimizes mechanical degradation risk under Polish winter conditions. - **25-year linear power warranty** - The manufacturer provides a 25-year linear power warranty — the segment standard, matching peer comparables such as JA Solar DEEP BLUE 3.0 (25 years / 84.8% of rated power). The product workmanship warranty is 12 years, on par with JA Solar DEEP BLUE 3.0. ## Cons - **Not Tier-1 / non-bankable** - Hiwatt Solar does not appear on BNEF Tier 1 lists (Q1 2026 or prior quarters), and the manufacturer context explicitly flags \`tier\_1\_bankable: false\`. For externally financed commercial projects (project finance, bank leasing), non-bankable status implies higher credit-risk premiums or additional collateral requirements. Standard financial institutions and PE funds typically mandate Tier-1-bankable modules as a baseline condition. - **Efficiency below peer comparables** - Peak module efficiency of 21.2% trails JA Solar DEEP BLUE 3.0 by 0.3 percentage points (21.5%) and ET Solar Elite PLUS by 0.2 pp (21.4%). On a typical 100 kWp rooftop installation, this difference equates to approximately 285 Wp less installed capacity over the same roof area — a meaningful constraint for space-limited projects. - **Monofacial — no bifacial energy gain** - The HW-M12/110H series is monofacial (\`is\_bifacial: false\`), whereas the direct peer comparable JA Solar DEEP BLUE 3.0 is available in a bifacial double-glass variant capable of generating an additional 5–15% energy from albedo reflection (light-colored gravel, concrete). For ground-mount farms and high-albedo rooftops, monofacial modules carry a structurally worse LCOE position. ## About this series Hiwatt Solar HW-M12/110H series photovoltaic panels are based on advanced **N-type cell technology in M12 format**, which allows for achieving impressive unit power while maintaining high module efficiency. The application of **Half-Cut technology** (cells cut in half) and a design based on 110 cells translates into significantly better shading tolerance and a reduction in energy losses resulting from internal resistance. Thanks to the **Multi-Busbar (MBB) system**, these modules are characterized by a shortened current flow path, which not only increases efficiency but also enhances resistance to micro-cracks and PID degradation. This series solves the problem of finding the golden mean between high power and thermal stability, offering a **low temperature coefficient** that guarantees high yields even on hot days. HW-M12/110H is an ideal choice for commercial investors and owners of large photovoltaic farms, as well as for modern residential installations where lowering the LCOE is key. It is distinguished from the competition by the precise matching of electrical parameters to modern high-input current inverters, allowing for full utilization of the system-s potential. A robust frame and high mechanical resistance to snow and wind make these panels ready for challenging Polish weather conditions, ensuring peace of mind and investment security for years. ## Notable figures - Efficiency of 20.9% matches the \*\*PERC 500-550W\*\* median - Power density of 208.6 W/m² matches the \*\*PERC 500-550W\*\* median - Temperature coefficient of -0.34%/°C matches the \*\*PERC 500-550W\*\* median - In the top 72% for efficiency among all PERC panels ## Questions ### What warranty does Hiwatt Solar offer on the HW-M12/110H series? Hiwatt Solar provides a 12-year product warranty covering manufacturing defects and materials, along with a 25-year linear power output warranty. After 25 years, the panel should retain at least 87.4% of its rated power. It is important to note that Hiwatt Solar is not currently listed among Tier 1 manufacturers, so buyers should carefully review warranty terms and assess the manufacturer's long-term financial stability before purchasing. ### Does TOPCon technology in the HW-M12/110H series genuinely outperform older PERC cells? Yes. N-type TOPCon (Tunnel Oxide Passivated Contact) cells offer higher initial efficiency and a lower temperature coefficient than PERC — typically -0.30%/°C vs. -0.35%/°C. On hot summer days that difference translates to a few percent more energy generated. TOPCon cells also demonstrate stronger resistance to PID degradation and slower long-term power decline compared to standard PERC technology. ### Are the HW-M12/110H 555 Wp panels compatible with my inverter? The HW-M12/110H series reaches 555 Wp with an open-circuit voltage Voc typical for M12 modules (approx. 38–41 V). The short-circuit current Isc approaches 18–19 A, so you must verify your inverter's MPPT input current rating. Modern inverters from SolarEdge, Huawei, Fronius, and SMA generally support these parameters, but always cross-check against the specific inverter datasheet before purchasing. ### How do HW-M12/110H panels handle harsh Polish weather — snow and wind loads? The HW-M12/110H modules are certified for wind loads up to 2400 Pa and snow loads up to 5400 Pa, meeting Polish structural standards for snow load zones I and II. The anodized aluminum frame and tempered glass provide strong mechanical resistance under winter conditions. The half-cut cell architecture also limits power losses caused by partial shading from accumulated snow or frost. ### How many cells does the HW-M12/110H panel have, and why does it matter for a residential installation? The panel uses 110 half-cut cells in M12 format (182 mm wafer). Splitting the cell string into two independent halves means that shading one section does not shut down the entire module — a real advantage for roofs with chimneys or dormers. A typical 10–15 kWp home system requires 18–27 modules, but the large form factor (approx. 2278×1134 mm) means at least two installers are needed to handle the panels safely on a pitched roof. ### Is Hiwatt Solar a reliable manufacturer, and should I be concerned about warranty claims? Hiwatt Solar is a Chinese PV module manufacturer that is not currently recognized as a Tier 1 producer by independent market analysts. This raises a higher long-term financial risk when relying on a 25-year power warranty. Before purchasing, consider taking out installation insurance that covers manufacturer insolvency, or choose a distributor that backs the warranty independently for the duration of the contract. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HW-M12-110H-535-555-63bcf0ad1af0.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.9 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.7 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.6 pp | | [Hiwatt Solar HW-M12/110H-535](https://comparepv.com/panel/hiwatt-solar-hw-m12-110h-535) | 535 W | -10 W, -0.4 pp | | [Hiwatt Solar HW-M12/110H-540](https://comparepv.com/panel/hiwatt-solar-hw-m12-110h-540) | 540 W | Very close match | | [Hiwatt Solar HW-M12/110H-550](https://comparepv.com/panel/hiwatt-solar-hw-m12-110h-550) | 550 W | Very close match | | [Hiwatt Solar HW-M12/110H-555](https://comparepv.com/panel/hiwatt-solar-hw-m12-110h-555) | 555 W | +10 W, +0.3 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +135 W, cooler, +4.3 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +130 W, cooler, +4.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +155 W, cooler, +4.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +150 W, cooler, +4.0 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +125 W, cooler, +3.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +125 W, cooler, +3.9 pp | --- Source: https://comparepv.com/panel/hiwatt-solar-hw-m12-110h-545 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.