--- title: "Axitec AC-570TGB/144TB-ALP 570W Solar Panel - Specs & Review | ComparePV" description: "Axitec AC-570TGB/144TB-ALP 570W solar panel. Specs: 21.25% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/axitec-ac-570tgb-144tb-alp" updated: 2026-09-11 --- # Axitec AC-570TGB/144TB-ALP Middle of its segment, heavy for its output 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Axitec - **Model:** AC-570TGB/144TB-ALP - **Series:** AXIbiperfect GXXL TB Alpine - **Rated power:** 570 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) | 570 W | 580 W | Typical | | | Module efficiency | 21.25% | 22.44% | Weak - bottom 3% | 8,904 | | Power density | 212.5 | 224.4 | Weak - bottom 3% | 8,790 | | Temperature coefficient | -0.310 | -0.290 | Weak - bottom 10% | 8,005 | | Weight (kg) | 43.0 kg | 31.2 kg | Weak - bottom 1% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.25% | 22.44% | Weak - bottom 3% | 8,904 | | Power density | 212.5 | 224.4 | Weak - bottom 3% | 8,790 | | Temperature coefficient | -0.310 | -0.290 | Weak - bottom 10% | 8,005 | | Weight per kWp | 75.4 | 53.8 | Weak - bottom 1% | 13,621 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **75.4 kg per kWp** - Bottom 1% of the TOPCon 550-600 W segment, against a median of 53.8. Ranked 13,621st in the whole database. - **212.5 watts per square metre** - Bottom 3% of the TOPCon 550-600 W segment, against a median of 224.4. Ranked 8,790th in the whole database. - **21.25% module efficiency** - Bottom 3% of the TOPCon 550-600 W segment, against a median of 22.44%. Ranked 8,904th in the whole database. - **Best for:** Commercial, utility-scale and cold-climate. - **Not ideal for:** Weight-limited structures, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 570 W - **Efficiency:** 21.25 % - **Voltage at Pmax (Vmp):** 43.51 V - **Current at Pmax (Imp):** 13.10 A - **Open-circuit voltage (Voc):** 51.41 V - **Short-circuit current (Isc):** 13.99 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.310 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 144 - **Bifacial:** yes ### Physical - **Length:** 2324 mm - **Width:** 1154 mm - **Thickness:** 35 mm - **Weight:** 43.0 kg - **Area:** 2.68 m2 - **Power density:** 212.5 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:** 498 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8904 of 14005 | | Power density | 8790 of 14005 | | Temperature coefficient | 8005 of 14005 | | Weight | 13621 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Alpine Certification up to 3,000 m Altitude** - The module has been certified for installation at altitudes up to 3,000 m above sea level, making it one of the few modules in the 570–585 Wp segment with verified approval for extreme mountain environments. This translates into broad project applicability across alpine and high-altitude zones. - **Hail Class HW4 + Dual 2×2.8 mm Tempered Glass** - The glass-glass construction with fully tempered 2×2.8 mm panes achieves hail resistance class HW4 — among the highest ratings available. Standard glass-backsheet modules use a single 3.2 mm front glass with no rear glass protection, making this series exceptionally robust against mechanical stress in demanding operating conditions. - **30-Year Product and Power Output Warranty** - Axitec guarantees module efficiency of ≥87.4% after 30 years, exceeding the industry-standard 25-year power warranty offered by most manufacturers (e.g., the Risen RSM144-9 carries a 25-year power warranty). This reduces financial risk in DCF models for long-term project financing. - **Low Temperature Coefficient Pmax of -0.31%/°C** - N-type TOPCon technology delivers a Pmax temperature coefficient of -0.31%/°C, outperforming typical PERC cells (~-0.35%/°C). In alpine regions where high-irradiance days and elevated temperatures alternate with cool conditions, this difference has a measurable impact on annual energy yield. - **Bifacial Design with Dual Glass Protection** - Combining bifacial cell technology with a glass-glass construction eliminates the risk of accelerated rear-side degradation (LID/PID) while delivering real-world bifacial gain from ground-reflected irradiance (snow, light-colored surfaces). This design is more durable than bifacial modules with a polymer backsheet, particularly in high-humidity and thermally variable environments. ## Cons - **Series Discontinued (2025)** - The series was both introduced and discontinued within the same year, 2025. This results in limited module availability on the secondary market, no supply continuity for system expansions, and potential difficulties sourcing replacement modules within the 30-year warranty horizon. This represents a significant risk for projects requiring long-term bill-of-materials standardization. - **Axitec Not Listed as BNEF Tier 1** - Axitec does not appear on the BloombergNEF Tier 1 manufacturer list (currently classified as Tier 2), which may complicate or increase the cost of non-recourse project financing. By comparison, peer comparable Risen Energy holds BNEF Tier 1 status — a designation frequently required by lenders financing utility-scale PV projects above 1 MW. - **Efficiency 0.8–1.4 pp Below Comparable Competitors** - The series peaks at 21.81% efficiency, while direct peer comparables reach 22.60–22.65% (Risen RSM144-9, Hanersun Hitouch 5N, Q-SUN Qrystal N8). The ~0.8–1.4 percentage point gap translates into measurable losses in power density for the same footprint — particularly relevant for rooftop or ground-mounted projects with constrained available area. ## About this series The Axitec AXIbiperfect GXXL TB Alpine series is designed for installations where standard modules quickly lose their advantage - in areas with heavy snow loads, strong winds, and those exposed to intense UV radiation. These modules, with a **glass-glass** construction, enhance rigidity and reduce the risk of microcracks and accelerated degradation in harsh operating conditions. The use of **N-Type TOPCon** cells helps maintain stable performance over time and better cope with typical losses seen in older technologies. Furthermore, the **bifacial** design allows for the effective use of reflected light from the ground - especially in areas with frequent snow or light surfaces. A key feature of this series is its **high mechanical strength** and suitability for use in alpine environments (including at high altitudes). This makes it a smart choice for PV farms, industrial rooftops, and projects in snowy areas, where predictable performance and long-term durability are essential. ## Notable figures - Module efficiency of 21.2% is 1.2pp below average for \*\*TOPCon 550-600W\*\* panels (median: 22.4%) - At 212.5 W/m², this panel generates 11.9 W/m² less per unit area than \*\*TOPCon 550-600W\*\* median (224.4 W/m²) - -0.31%/°C temperature coefficient - 0.02pp worse than \*\*TOPCon 550-600W\*\* median (-0.29%/°C), expect higher hot weather losses - At 43.0 kg, this panel is 11.8 kg heavier than the \*\*TOPCon 550-600W\*\* median (31.2 kg) - more demanding for installation crews - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### Is the Axitec AXIbiperfect GXXL TB Alpine series still available for purchase? The Axitec AXIbiperfect GXXL TB Alpine series has been discontinued and is no longer actively offered by the manufacturer. Individual units may still be found in distributor inventories; however, when planning a new installation it is advisable to consider newer Axitec series with comparable specifications — glass-glass construction, N-Type TOPCon cells, and high mechanical resistance designed for harsh environments. ### What warranty is offered on the Axitec AXIbiperfect GXXL TB Alpine panels? Axitec provides a 30-year product warranty covering material and workmanship defects, as well as a 30-year linear power output warranty for this series. This is one of the longest warranty packages available on the photovoltaic module market, and combined with the glass-glass construction and N-Type TOPCon cells, it translates into genuinely predictable energy yield throughout the entire service life of the installation. ### How does the TOPCon technology used in the AXIbiperfect GXXL TB Alpine series differ from PERC cells? N-Type TOPCon cells achieve higher efficiency and exhibit a lower degradation rate than the widely used PERC cells. They are also more resistant to LID (Light-Induced Degradation), a phenomenon that reduces the output of P-type silicon-based modules during the first years of operation. In practice, the AXIbiperfect GXXL TB Alpine panel loses less power during the initial period and maintains more stable energy yield throughout the full 30 years covered by the power warranty. ### Do the bifacial AXIbiperfect GXXL TB Alpine panels produce more energy in snow-prone areas? Yes, bifacial technology performs particularly well where snow accumulates regularly. A white snow cover reflects solar irradiance onto the rear surface of the module, which can increase energy production by several to more than ten percent compared to an equivalent monofacial panel. The AXIbiperfect GXXL TB Alpine series deliberately combines bifacial design with glass-glass construction specifically with such climatic conditions in mind. ### Are the Axitec AXIbiperfect GXXL TB Alpine panels suitable for installation in mountainous or high-altitude locations? Yes — the Alpine designation in the series name is not coincidental. The modules have passed qualification tests for high-altitude installations, where extreme conditions prevail: intense UV radiation, strong winds, large temperature swings, and prolonged snow loads. The high mechanical resistance and dual-glass construction mean the series meets the stringent requirements of such locations more effectively than standard modules with a rear backsheet. ### What advantages does the glass-glass construction of the Axitec AXIbiperfect GXXL TB Alpine panels offer compared to a conventional module? In a glass-glass construction, the rear backsheet is replaced by a second pane of glass, which significantly increases the module's rigidity and its resistance to snow and wind loads. The cells are better protected against moisture ingress and UV radiation, reducing the risk of microcracks and accelerated degradation. With a nominal power output of 585 Wp and a 30-year warranty, this design is particularly advantageous for utility-scale PV plants and industrial rooftops in demanding climatic zones. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/DB-144zlg-biperfect-GXXL-TB-Alpine-MiA-EN-1-65Kabel-311689851226.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, 18 kg lighter, +3.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, 18 kg lighter, +3.4 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, 27 kg lighter, +3.1 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, 20 kg lighter, +3.1 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | Cooler, 20 kg lighter, +3.1 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | Cooler, 16 kg lighter, +3.0 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | Cooler, 18 kg lighter, +2.9 pp | | [Axitec AC-575TGB/144TB-ALP](https://comparepv.com/panel/axitec-ac-575tgb-144tb-alp) | 575 W | Very close match | | [Axitec AC-580TGB/144TB-ALP](https://comparepv.com/panel/axitec-ac-580tgb-144tb-alp) | 580 W | +10 W, +0.4 pp | | [Axitec AC-585TGB/144TB-ALP](https://comparepv.com/panel/axitec-ac-585tgb-144tb-alp) | 585 W | +15 W, +0.6 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +80 W, 16 kg lighter, +3.9 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +110 W, lighter, +3.9 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +105 W, lighter, +3.8 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +75 W, 16 kg lighter, +3.8 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +100 W, lighter, +3.6 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +100 W, lighter, +3.6 pp | --- Source: https://comparepv.com/panel/axitec-ac-570tgb-144tb-alp 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.