--- title: "AmoSolar AS675G12-120 675W Solar Panel - Specs & Review | ComparePV" description: "AmoSolar AS675G12-120 675W solar panel. Specs: 21.70% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/amosolar-as675g12-120" updated: 2026-09-11 --- # AmoSolar AS675G12-120 Space saver, no clear weak spot 320 panels in the segment PERC 650-700 W ## Identity - **Manufacturer:** AmoSolar - **Model:** AS675G12-120 - **Series:** AS645-675G12-132B - **Rated power:** 675 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 650-700 W (320 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 675 W | 660 W | Strong - top 6% | | | Module efficiency | 21.70% | 21.25% | Strong - top 8% | 7,421 | | Power density | 217.3 | 212.5 | Strong - top 6% | 7,349 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight (kg) | 38.7 kg | 34.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.70% | 21.25% | Strong - top 8% | 7,421 | | Power density | 217.3 | 212.5 | Strong - top 6% | 7,349 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight per kWp | 57.3 | 52.3 | Typical | 11,178 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **217.3 watts per square metre** - Top 6% of the PERC 650-700 W segment, against a median of 212.5. Ranked 7,349th in the whole database. - **21.70% module efficiency** - Top 8% of the PERC 650-700 W segment, against a median of 21.25%. Ranked 7,421st in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 675 W - **Efficiency:** 21.70 % - **Voltage at Pmax (Vmp):** 38.40 V - **Current at Pmax (Imp):** 17.58 A - **Open-circuit voltage (Voc):** 46.20 V - **Short-circuit current (Isc):** 18.70 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:** 132 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 38.7 kg - **Area:** 3.11 m2 - **Power density:** 217.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 83.0 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 560 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7421 of 14005 | | Power density | 7349 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 11178 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Large G12 cells + 132 half-cut cells** - Format G12 (210 mm) in half-cut configuration reduces the operating current by half, which lowers resistive losses and improves resistance to partial shading. When combined with 132 cells, it achieves a power output of up to 675 Wp from a single module, which reduces the number of modules and BOS costs in utility and commercial installations. - **Bifacial design with double glazing** - Bifacial modules with bifacial technology allow for energy generation from both sides of the module. In PV farms on bright surfaces or with a well-designed mounting structure, bifaciality can realistically increase annual energy yield by 5–15% compared to monofacial modules without increasing the surface area. - **30-year warranty on power** - The manufacturer offers a 30-year linear performance warranty, which is comparable to the warranties offered by competitors Trina Solar Vertex TSM-DE21 and BYD AURO MSTK-33. This is particularly important for commercial and utility projects, where financing periods exceed 20 years. - **Efficiency of up to 21.7% – at the top of the segment** - The module's maximum efficiency of 21.7% is practically equivalent to that of comparable models: BYD AURO MSTK-33 (21.73%) and Trina Solar Vertex DE21 (21.7%). The series maintains its power density per square meter compared to leading models in the segment. - **7 power options (645–675 Wp)** - The availability of 7 kilowatts in a single series provides flexibility in string design and optimizing the operation of the inverter – particularly valuable in large installations, where the homogeneity of modules within a string directly affects performance. ## Cons - **Lack of Tier 1 status (BNEF bankable)** - AmoSolar is not listed on the BNEF Tier 1 Solar Module Manufacturers list (Q1 2026), unlike direct peer companies such as Trina Solar and BYD, which are long-standing Tier 1 manufacturers. This could make it difficult or impossible for projects financed by banks or through leasing to obtain approval for AmoSolar modules from the financing institutions. - **PERC instead of a newer N-type TOPCon** - PERC cells exhibit a temperature coefficient of approximately -0.34%/°C (typical for G12 PERC in this class), while newer N-type TOPCon cells achieve approximately -0.29%/°C. On hot days, this difference translates into a significantly lower power output; PERC cells are also more susceptible to LID (light-induced degradation) than N-type cells, which dominate in newer premium module generations (2024-2026). - **Product warranty is only 12 years.** - The product warranty is 12 years, while leading Tier 1 manufacturers (e.g., Trina Solar, JA Solar, LONGi) typically offer a 15-year product warranty. For commercial installations with a 20+ year lifespan, a shortened product warranty increases the risk of module replacement costs before the end of the depreciation period. ## About this series The AmoSolar AS645-675G12-132B series consists of large-wafer G12-based modules with a **half-cut** design, specifically engineered to maximize energy yield on large roof areas and in ground-mounted installations. The use of **bifacial technology** in dual-glass versions allows for efficient "harvesting" of energy from both sides, which significantly improves production in PV farms, on bright roofs, and with well-designed mounting structures. These modules utilize **monocrystalline PERC** cells and multi-busbar connections, which provide stable performance even under partial shading and minimize losses due to microcracks and internal resistance. Another key feature is the **double-glass** design in bifacial versions, which offers enhanced resistance to environmental conditions and long-term loads, making it ideal for commercial and utility projects. This is a good choice for investors who want to extract more energy from the same surface area and achieve greater predictability in the long term. ## Notable figures - Efficiency of 21.7% matches the \*\*PERC 650-700W\*\* median - Power density of 217.3 W/m² packs 4.8 W/m² more into the same footprint vs \*\*PERC 650-700W\*\* median (212.5 W/m²) - At -0.34%/°C, hot weather performance is typical for \*\*PERC 650-700W\*\* panels - At 38.7 kg (4.2 kg above \*\*PERC 650-700W\*\* median of 34.5 kg), requires checking roof load capacity - Ranked #7421 out of 14005 panels for efficiency in the database ## Questions ### What warranty is offered on the AmoSolar AS645-675G12-132B panels? The AS645-675G12-132B series is covered by a 12-year product warranty against material and workmanship defects, as well as a 30-year linear power output warranty. The manufacturer guarantees that after 30 years of operation the module will retain at least 80.6% of its nominal power. These are standard terms for the commercial segment; however, before purchasing it is advisable to verify that the distributor operating in your market is able to enforce these warranty conditions without requiring direct contact with the factory in China. ### Are the AmoSolar AS645-675G12-132B modules suitable for ground-mounted utility-scale PV farms? Yes, the AS645-675G12-132B series is designed primarily for large-area ground-mounted PV farms. The large-format G12 cells (210 mm) and power output of up to 675 Wp reduce the number of modules required for a given system capacity. Bifacial dual-glass variants effectively harness irradiance reflected from the ground surface, which in ground-mounted farms with light-colored albedo substrates translates into a measurable increase in energy yield. ### What benefit does bifacial technology offer in the AS645-675G12-132B series, and is it worth paying the premium for the dual-glass version? The bifacial variant harvests energy from both the front and rear side of the module by capturing irradiance reflected from the ground or rooftop surface. Under favorable conditions — such as light-colored gravel, white geomembrane, or a flat roof with a bright membrane — the energy gain can reach 5–15% compared to a standard monofacial module. The dual-glass construction also provides enhanced protection against moisture ingress and mechanical damage, extending the service life of the installation. The additional cost is justified for ground-mounted farms and flat commercial rooftops. ### How do the AmoSolar AS645-675G12-132B panels perform at high temperatures during summer? The AS645-675G12-132B series has a power temperature coefficient of approximately -0.34%/°C, which is a typical value for PERC technology. This means that when the module heats up to 65 °C — a common occurrence under summer irradiance conditions — power output drops by approximately 14% relative to STC. The half-cut cell architecture combined with multi-busbar interconnections reduces resistive losses within the module, which partially mitigates the thermal derating effect compared to older PERC module designs. ### Is AmoSolar a Tier 1 manufacturer, and does that classification affect the investment risk? AmoSolar is not classified as a Tier 1 manufacturer according to Bloomberg NEF rankings. This indicates that the company is a smaller market participant without the verified financial track record required for that classification. Investors considering large commercial installations or utility-scale PV farms should factor in this risk when assessing the availability of warranty service over a long horizon of 25–30 years. The series may be competitively priced, but for utility-scale projects it is advisable to benchmark it against offerings from Tier 1 manufacturers. ### Can AmoSolar AS645-675G12-132B modules be installed on standard rooftop mounting systems? Due to the G12 cell format and 132-cell layout, modules in this series have substantial physical dimensions — typically approximately 2279 × 1134 mm or similar — and a weight exceeding 30 kg in the dual-glass configuration. This makes installation on steep pitched roofs logistically demanding and requires an adequately sized installation crew. The series is optimized for ground-mounted systems and flat commercial rooftops rather than for typical residential prosumer installations on single-family homes. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/210-MONO-HALF-CELL-132CELLS-645-675W-2384-1303-35-Bifacial-ffb749de2c61.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +3.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +3.5 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +3.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +3.3 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Cooler, lighter, +3.3 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Cooler, lighter, +3.2 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +3.1 pp | | [AmoSolar AS645G12-132](https://comparepv.com/panel/amosolar-as645g12-132) | 645 W | Lighter, -0.9 pp, -5 yr warranty | | [AmoSolar AS650G12-132](https://comparepv.com/panel/amosolar-as650g12-132) | 650 W | Lighter, -0.8 pp, -5 yr warranty | | [AmoSolar AS655G12-132](https://comparepv.com/panel/amosolar-as655g12-132) | 655 W | Lighter, -0.6 pp, -5 yr warranty | | [AmoSolar AS660G12-132](https://comparepv.com/panel/amosolar-as660g12-132) | 660 W | Lighter, -0.4 pp, -5 yr warranty | | [AmoSolar AS665G12-132](https://comparepv.com/panel/amosolar-as665g12-132) | 665 W | Lighter, -0.3 pp, -5 yr warranty | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +130 W, cooler, +3.4 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +125 W, cooler, +3.2 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +120 W, cooler, +3.1 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +115 W, cooler, +2.9 pp | --- Source: https://comparepv.com/panel/amosolar-as675g12-120 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.