--- title: "HT-SAAE HT72-18X 545W 545W Solar Panel - Specs & Review | ComparePV" description: "HT-SAAE HT72-18X 545W 545W solar panel. Specs: 21.10% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ht-saae-ht72-18x-545w" updated: 2026-09-11 --- # HT-SAAE HT72-18X 545W Strong in heat, short guarantee 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** HT-SAAE - **Model:** HT72-18X 545W - **Series:** MULTIWAY+ - **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 | 21.10% | 20.90% | Strong - top 20% | 9,297 | | Power density | 210.9 | 209.0 | Typical | 9,399 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 8% | 8,545 | | Weight (kg) | 28.5 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 | 21.10% | 20.90% | Strong - top 20% | 9,297 | | Power density | 210.9 | 209.0 | Typical | 9,399 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 8% | 8,545 | | Weight per kWp | 52.3 | 53.0 | Typical | 5,761 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Strengths - **-0.330 %/°C temperature coefficient** - Top 8% of the PERC 500-550 W segment, against a median of -0.350. Ranked 8,545th in the whole database. - **21.10% module efficiency** - Top 20% of the PERC 500-550 W segment, against a median of 20.90%. ### Watch out for - **25 year performance warranty** - Bottom 23% of the PERC 500-550 W segment, against a median of 30 yrs. - **Best for:** Residential, commercial, utility-scale, shaded-installations and hot-climate. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 545 W - **Efficiency:** 21.10 % - **Voltage at Pmax (Vmp):** 41.80 V - **Current at Pmax (Imp):** 13.05 A - **Open-circuit voltage (Voc):** 49.65 V - **Short-circuit current (Isc):** 13.95 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.330 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.042 %/degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.5 kg - **Area:** 2.58 m2 - **Power density:** 210.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 83.1 % - **First-year degradation:** 2.50 % - **Output after 30 years:** 437 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9297 of 14005 | | Power density | 9399 of 14005 | | Temperature coefficient | 8545 of 14005 | | Weight | 5761 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Tier-1 Manufacturer with Documented Bankability** - HT-SAAE (Shanghai Aerospace Automobile Electromechanical Co.) appears on BNEF Tier-1 bankable manufacturer lists and has operated continuously since 1998. Its industrial roots in the aerospace sector translate into rigorous manufacturing quality control and the financial credibility needed to honor warranties throughout the full 25-year performance period. - **Up to 21.7% Efficiency – Leading the 540–560 W PERC Segment** - The highest-output variant (560 W) achieves 21.7%, matching the Exiom EX560M and only 0.02 percentage points below the DAH Solar DHM-T72X10/BF/FS (21.72%). Among the three identified peer comparables, the MULTIWAY+ series ranks joint first in conversion efficiency within the monofacial PERC module class. - **Half-Cut 182 mm Cells (144 Cells) – Improved Shade Tolerance** - The half-cut cell design reduces the operating current in each half-string by approximately 50%, lowering resistive I²R losses. In practice, this yields roughly 2–4% higher energy output under partial shading conditions (e.g., chimney, antenna) compared to equivalent modules with full cells, as confirmed by independent IEC studies. - **Five Power Variants from 540 W to 560 W in 5 W Steps** - The availability of five variants on a 5 W grid allows precise string sizing to match the inverter's MPPT range and maximum input power without over-dimensioning. This is particularly valuable in installations with limited roof area or strict grid connection power caps. - **25-Year Linear Power Warranty** - The manufacturer guarantees linear performance degradation over 25 years (25/25-year product and power warranty), consistent with the Tier-1 standard. The linear warranty structure — as opposed to the two-step degradation schedule (10+15 years) used by lower-cost manufacturers — ensures predictable energy yield and a reliable basis for financial modeling (IRR/NPV) throughout the system's full operational lifetime. ## Cons - **PERC Technology – Higher Degradation than TOPCon** - P-type PERC technology exhibits higher light-induced degradation (LID) in the first year of operation (~2% vs. ~1% for N-type TOPCon) and a higher annual degradation rate (~0.55–0.70%/year vs. ~0.40–0.50% for TOPCon). Over a 25-year lifecycle, the cumulative difference can reach 3–6 percentage points in energy production. In 2024, TOPCon's share of global manufacturing capacity exceeded 66%, making PERC a declining technology and potentially affecting the residual value of the installation. - **Monofacial Design – No Gain from Reflected Irradiance** - The MULTIWAY+ series in the 540–560 W range is exclusively monofacial (is\_bifacial: false), whereas the direct peer DAH Solar DHM-T72X10/BF/FS (21.72%, 560 W) offers bifacial technology. On high-albedo surfaces (concrete, gravel, snow – albedo 0.25–0.80), bifacial modules realistically generate 5–15% more energy from the same roof or ground area. ## About this series The HT-SAAE MULTIWAY+ series is designed to maximize energy yield in real-world operating conditions - where temperature losses, shading, and installation durability are critical factors. Depending on the variant, modules based on TOPCon or PERC cells are available, and the application of half-cut technology improves performance under partial shading and minimizes the risk of overheating active module areas. A key feature of the series is its approach to parameter stability over time - certain models feature **low or even ZERO LID**, translating to more predictable energy production from day one of operation. For investors seeking longer lifespan, the double glass constructions are a significant advantage, as they better withstand humidity, temperature fluctuations, and mechanical stress. The MULTIWAY+ series is ideal for residential, commercial, and large-scale projects where you prioritize **high efficiency**, **better performance in hot conditions**, and reliable yield without compromise. ## Notable figures - Efficiency of 21.1% matches the \*\*PERC 500-550W\*\* median - At 210.9 W/m² power density, roof space requirements are typical for \*\*PERC 500-550W\*\* panels - At -0.33%/°C, hot weather performance is typical for \*\*PERC 500-550W\*\* panels - Ranked #9297 out of 14005 panels for efficiency in the database ## Questions ### What is the maximum output of HT-SAAE MULTIWAY+ panels and what types of installations are they suited for? The MULTIWAY+ series reaches up to 560 Wp. It is designed for residential rooftop installations, commercial buildings, and utility-scale projects where high power density matters. Half-cut cell technology with 144 cells improves performance under partial shading, making the modules a practical choice for roofs with chimneys, antennas, or skylights. ### What warranty does the HT-SAAE MULTIWAY+ series come with? HT-SAAE provides a 25-year product warranty and a 25-year linear power output warranty. This guarantees the module will maintain its rated electrical performance for a full quarter-century. As a Tier 1 manufacturer, HT-SAAE is considered bankable with a confirmed financial track record — an important factor for project financing and long-term LCOE calculations. ### What does zero LID mean in MULTIWAY+ panels and how does it affect energy yield? LID (Light Induced Degradation) is an initial power drop that occurs during the first hours of sun exposure, common in crystalline silicon cells. Selected MULTIWAY+ models are rated at zero or near-zero LID, meaning the module delivers its nameplate power output from day one. This improves actual energy yield in the early months of operation and makes long-term production forecasts more reliable. ### Do HT-SAAE MULTIWAY+ panels perform well in summer when rooftop temperatures rise significantly? PERC technology combined with half-cut cells reduces thermal losses compared to conventional full-cell modules. MULTIWAY+ modules are certified for operation from -40°C to +85°C. The half-cut design also limits hot-spot risk in active cell areas, which is critical for south-facing rooftop installations exposed to high irradiance and elevated ambient temperatures. ### What is the difference between the PERC and TOPCon variants available in the MULTIWAY+ series? The MULTIWAY+ series is available in both PERC and TOPCon configurations. PERC (Passivated Emitter and Rear Cell) is a proven, cost-effective technology with module efficiency around 21.7%. TOPCon (Tunnel Oxide Passivated Contact) offers higher cell efficiency and better low-light performance but typically comes at a higher price point. The right choice depends on available roof area, budget, and target payback period. ### Are double glass MULTIWAY+ panels suitable for harsh weather conditions and ground-mounted systems? Yes. Double glass MULTIWAY+ modules replace the standard backsheet with a second glass layer, significantly improving resistance to moisture ingress, UV exposure, snow and wind loads, and thermal cycling. This construction is recommended for high-humidity sites, installations near bodies of water, and ground-mounted systems where condensation and soil contact pose a real risk of module degradation over time. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1142230498632ac158bcbb1-e08d0a4bbe97.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.7 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.4 pp | | [HT-SAAE HT40-18X(ND)-310W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-310w) | 310 W | -235 W, heavier, -9.0 pp | | [HT-SAAE HT40-18X(ND)-F-310W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-310w) | 310 W | -235 W, -9.1 pp, +5 yr warranty | | [HT-SAAE HT40-18X(ND)-315W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-315w) | 315 W | -230 W, heavier, -8.8 pp | | [HT-SAAE HT40-18X(ND)-F-315W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-315w) | 315 W | -230 W, -8.9 pp, +5 yr warranty | | [HT-SAAE HT40-18X(ND)-320W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-320w) | 320 W | -225 W, heavier, -8.6 pp | | [HT-SAAE HT40-18X(ND)-F-320W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-320w) | 320 W | -225 W, -8.7 pp, +5 yr warranty | | [HT-SAAE HT40-18X(ND)-325W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-325w) | 325 W | -220 W, heavier, -8.4 pp | | [HT-SAAE HT40-18X(ND)-F-325W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-325w) | 325 W | -220 W, -8.5 pp, +5 yr warranty | | [HT-SAAE HT40-18X(ND)-330W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-330w) | 330 W | -215 W, heavier, -8.2 pp | | [HT-SAAE HT40-18X(ND)-F-330W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-330w) | 330 W | -215 W, -8.3 pp, +5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +105 W, cooler, +4.1 pp | --- Source: https://comparepv.com/panel/ht-saae-ht72-18x-545w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.