--- title: "HT-SAAE HT40-18X(ND)-320W 320W Solar Panel - Specs & Review | ComparePV" description: "HT-SAAE HT40-18X(ND)-320W 320W solar panel. Specs: 12.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ht-saae-ht40-18x-nd-320w" updated: 2026-09-11 --- # HT-SAAE HT40-18X(ND)-320W Middle of its segment, modest efficiency 39 panels in the segment TOPCon 300-350 W ## Identity - **Manufacturer:** HT-SAAE - **Model:** HT40-18X(ND)-320W - **Series:** HT40-18X(ND) - **Rated power:** 320 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 300-350 W (39 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 320 W | 320 W | Typical | | | Module efficiency | 12.50% | 15.01% | Weak - bottom 14% | 13,980 | | Power density | 124.5 | 150.1 | Weak - bottom 14% | 13,967 | | Temperature coefficient | -0.310 | -0.300 | Typical | 8,005 | | Weight (kg) | 35.5 kg | 27.0 kg | Weak - bottom 17% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 12.50% | 15.01% | Weak - bottom 14% | 13,980 | | Power density | 124.5 | 150.1 | Weak - bottom 14% | 13,967 | | Temperature coefficient | -0.310 | -0.300 | Typical | 8,005 | | Weight per kWp | 110.9 | 82.1 | Weak - bottom 17% | 13,958 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **12.50% module efficiency** - Bottom 14% of the TOPCon 300-350 W segment, against a median of 15.01%. - **124.5 watts per square metre** - Bottom 14% of the TOPCon 300-350 W segment, against a median of 150.1. - **110.9 kg per kWp** - Bottom 17% of the TOPCon 300-350 W segment, against a median of 82.1. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 320 W - **Efficiency:** 12.50 % - **Voltage at Pmax (Vmp):** 23.50 V - **Current at Pmax (Imp):** 13.63 A - **Open-circuit voltage (Voc):** 28.10 V - **Short-circuit current (Isc):** 14.42 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.310 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 80 - **Bifacial:** yes ### Physical - **Length:** 2279 mm - **Width:** 1128 mm - **Thickness:** 7 mm - **Weight:** 35.5 kg - **Area:** 2.57 m2 - **Power density:** 124.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 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:** 280 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13980 of 14005 | | Power density | 13967 of 14005 | | Temperature coefficient | 8005 of 14005 | | Weight | 13958 of 14005 | | Warranty | 21 of 14005 | ## Pros - **87.4% Power Warranty After 30 Years** - HT-SAAE guarantees a minimum of 87.4% retained output power after 30 years, with an annual degradation rate below 0.4% — surpassing the industry standard for P-type modules (83% after 25 years, used by Jinko in its polycrystalline series, among others). This translates into a measurably higher cumulative energy yield over the investment horizon. - **N-type TOPCon: No LID or PID** - N-type technology fully eliminates Light Induced Degradation (LID) and Potential Induced Degradation (PID), which typically account for 1–3% power loss during the first years of operation in P-type PERC modules. In practice, this results in higher real-world energy yield during the first 5–10 years compared to lower-cost alternatives of the same nominal power rating. - **Bankable Tier-1 (BloombergNEF), 5 GW/yr Capacity** - HT-SAAE is repeatedly classified as a Tier-1 manufacturer by BloombergNEF, with an annual production capacity of 5 GW (Q1 2025). The company is a subsidiary of China Aerospace Science and Technology Corporation (CASC) and has conducted solar cell research since 1960 — providing financial stability and reliable warranty service availability throughout the warranty period. - **Bifacial with 49% Rear Transmittance (POE Encapsulant)** - The use of POE encapsulation with 49% rear-surface light transmittance enables meaningful albedo gain from reflected irradiance, estimated at 5–20% additional generation with suitable ground cover. This is particularly valuable in ground-mounted installations over light-colored surfaces or rooftop systems with white TPO/PVC membranes. ## Cons - **Module Efficiency 12.1–12.9% vs. Market Peers** - At dimensions of 2278 × 1134 mm, a 330 Wp panel occupies approximately 2.58 m², whereas the Waaree ARKA 330 Wp (19.81% efficiency) requires only 1.67 m² and the JA Solar Mono80 330 Wp (23.15%) just 1.43 m². For the same 10 kWp system, the HT40-18X series requires 55–81% more roof or ground area than comparably rated modern modules. - **32.5 kg/Module — Elevated Structural Requirements** - The HT40-18X(ND) module weighs 32.5 kg, approximately 60–80% more than typical 330 Wp modules based on 120 half-cut cells (18–20 kg). For rooftop installations, this may necessitate additional structural analysis of the roof framing and more robust racking systems, increasing overall BoS costs. - **Maximum Power Output 330 Wp — Below TOPCon Market Standard** - Between 2023 and 2026, the market standard for N-type TOPCon modules is 440–580 Wp (e.g., the HT54-18X(ND)-F from the same manufacturer reaches 440–460 Wp). The lower Wp-per-module rating means more modules are required for the same system capacity, increasing labor costs and the number of DC-side connections. ## About this series The HT-SAAE HT40-18X(ND) series was designed for installations where reliable performance in variable conditions and real energy yield matter more than paper specifications alone. The application of **N-type TOPCon technology** translates to high conversion efficiency and predictable long-term performance - valued by investors seeking trouble-free operation. The **bifacial** design enables additional gain from reflected radiation - particularly beneficial when installed on light-colored rooftops, ground-based structures, or surfaces with high reflectivity. In practice, this series helps minimize losses during hot periods thanks to its **favorable temperature coefficient** and maintains stable production even under poorer irradiance conditions. For installers, mechanical durability and robust construction are key, while end-users benefit from a **longer power warranty**, facilitating return on investment planning. This is an excellent choice for commercial, industrial, and large-scale residential projects where longevity and performance over time are paramount. ## Notable figures - Module efficiency of 12.5% is 3.5pp below average for \*\*TOPCon 0-400W\*\* panels (median: 16.0%) - 124.5 W/m² power density is 35.3 W/m² below \*\*TOPCon 0-400W\*\* median (159.8 W/m²) - requires larger installation area - At -0.31%/°C, loses 0.02pp more power per degree than \*\*TOPCon 0-400W\*\* median (-0.29%/°C) - Weight of 35.5 kg is 12.0 kg above \*\*TOPCon 0-400W\*\* median (23.5 kg) - verify structural support - 74% bifaciality enables rear-side power generation, boosting yield by 4-11% on reflective surfaces ## Questions ### What is the TOPCon N-type technology used in HT-SAAE HT40-18X(ND) panels and how does it compare to PERC? TOPCon (Tunnel Oxide Passivated Contact) is an N-type silicon cell technology that delivers higher conversion efficiency and lower recombination losses than older P-type PERC. In practice, this means better low-light performance, a more favorable temperature coefficient (less power loss in heat), and slower long-term degradation. The HT40-18X(ND) series leverages these advantages for a more stable and predictable energy yield over the system's lifetime. ### What warranty is included with the HT-SAAE HT40-18X(ND) solar panels? The manufacturer provides a 30-year product warranty and a 30-year linear power output warranty. This extended coverage is one of the series' key selling points, making it significantly easier to model the ROI for commercial and prosumer projects. It is recommended to verify that the warranty is supported by an authorized local distributor to streamline any future claims process. ### What does the bifacial design of the HT40-18X(ND) series mean and when does it actually pay off? Bifacial means the panel generates electricity from both the front side (direct irradiance) and the rear side (light reflected from the ground or surroundings). The additional rear-side energy gain typically ranges from 10% to 30%, depending on surface albedo. Bifacial delivers the best returns in ground-mount installations over bright soil, on roofs with white membranes, or in environments with high reflectivity. The gain is smaller on dark-tiled residential rooftops. ### Do HT-SAAE HT40-18X(ND) panels lose significant power output in hot weather? N-type TOPCon cells have a more favorable temperature coefficient than older PERC technology. This means that as module temperature rises above 25°C, power loss is lower compared to P-type alternatives. In real-world conditions during warm summers, the HT40-18X(ND) panels maintain relatively higher production, which translates into a better annual energy yield versus comparable P-type modules. ### Is the HT-SAAE HT40-18X(ND) series suitable for large commercial and industrial installations? Yes, the HT40-18X(ND) series with up to 330 Wp is designed for commercial, industrial, and larger prosumer systems. The robust double-glass construction, 30-year warranty, and Tier 1 manufacturer certification satisfy the requirements of bankable and audited projects. The smaller module format also offers flexibility in adapting to various racking systems for both rooftop and ground-mount applications. ### Is HT-SAAE a reliable manufacturer and is it safe to choose their panels for a long-term investment? HT-SAAE (Shanghai Aerospace Automobile Electromechanical Co., Ltd.) is a Bloomberg NEF Tier 1 solar panel manufacturer, confirming bankability and established market presence. The company supplies modules to markets including Australia and Europe. Tier 1 status is not a product quality rating per se, but it validates financial stability and production scale, which reduces the risk of warranty issues over a 30-year horizon. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ht40-18xnd-330-au-2da511f0e625.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | 23 kg lighter, +10.8 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | 23 kg lighter, +10.8 pp, -5 yr warranty | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | Cooler, 21 kg lighter, +10.8 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | 20 kg lighter, +10.6 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | 20 kg lighter, +10.6 pp, -5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -35 W, 25 kg lighter, +10.5 pp | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | -50 W, 25 kg lighter, +10.5 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -20 W, 19 kg lighter, +10.5 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | 19 kg lighter, +10.5 pp | | [HT-SAAE HT40-18X(ND)-310W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-310w) | 310 W | -10 W, -0.4 pp | | [HT-SAAE HT40-18X(ND)-F-310W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-310w) | 310 W | -10 W, lighter, -0.5 pp | | [HT-SAAE HT40-18X(ND)-315W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-315w) | 315 W | Very close match | | [HT-SAAE HT40-18X(ND)-F-315W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-315w) | 315 W | Lighter, -0.3 pp | | [HT-SAAE HT40-18X(ND)-F-320W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-320w) | 320 W | Lighter | | [HT-SAAE HT40-18X(ND)-325W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-325w) | 325 W | Very close match | | [HT-SAAE HT40-18X(ND)-F-325W](https://comparepv.com/panel/ht-saae-ht40-18x-nd-f-325w) | 325 W | Lighter | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +330 W, lighter, +12.7 pp | --- Source: https://comparepv.com/panel/ht-saae-ht40-18x-nd-320w Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.