--- title: "Astronergy CHSM66RN(DG)/F-BH-605Wp 605W Solar Panel - Specs & Review | ComparePV" description: "Astronergy CHSM66RN(DG)/F-BH-605Wp 605W solar panel. Specs: 22.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bh-605wp" updated: 2026-09-11 --- # Astronergy CHSM66RN(DG)/F-BH-605Wp Middle of its segment, heavy for its output 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Astronergy - **Model:** CHSM66RN(DG)/F-BH-605Wp - **Series:** ASTRO N7 CHSM66RN(DG)/F-BH - **Rated power:** 605 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 605 W | 620 W | Weak - bottom 15% | | | Module efficiency | 22.40% | 22.80% | Weak - bottom 23% | 4,774 | | Power density | 224.0 | 227.7 | Weak - bottom 23% | 4,780 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 33.5 kg | 32.7 kg | Weak - bottom 12% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.40% | 22.80% | Weak - bottom 23% | 4,774 | | Power density | 224.0 | 227.7 | Weak - bottom 23% | 4,780 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 55.4 | 53.1 | Weak - bottom 12% | 9,806 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **55.4 kg per kWp** - Bottom 12% of the TOPCon 600-650 W segment, against a median of 53.1. - **22.40% module efficiency** - Bottom 23% of the TOPCon 600-650 W segment, against a median of 22.80%. - **224.0 watts per square metre** - Bottom 23% of the TOPCon 600-650 W segment, against a median of 227.7. - **Best for:** Utility-scale, commercial and hot-climate. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 605 W - **Efficiency:** 22.40 % - **Voltage at Pmax (Vmp):** 41.18 V - **Current at Pmax (Imp):** 14.69 A - **Open-circuit voltage (Voc):** 48.59 V - **Short-circuit current (Isc):** 15.86 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.043 %/degC - **NOCT:** 41 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 33.5 kg - **Area:** 2.70 m2 - **Power density:** 224.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 529 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4774 of 14005 | | Power density | 4780 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 9806 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon 4.0 – Lower Degradation** - N-type cells exhibit a significantly lower temperature coefficient (~-0.29%/°C) compared to mainstream P-type PERC modules (~-0.35%/°C), translating into measurably higher energy yield on hot days. TOPCon 4.0 technology also eliminates Light-Induced Degradation (LID), a known issue with p-type cells, ensuring more stable output power throughout the module's entire service life. - **Bifacial Double-Glass Construction + PID Elimination** - Dual tempered glass (front/rear) delivers a bifaciality factor of ~85%, which—given appropriate installation conditions (reflective ground surface, suitable tilt angle)—generates an additional 5–25% energy yield from the rear side. The double-glass construction fully eliminates Potential-Induced Degradation (PID) and EVA creep, extending mechanical durability beyond 30 years. - **30-Year Linear Power Warranty – 87.4% Rated Power** - Astronergy guarantees a minimum of 87.4% of nominal power output after 30 years of operation, with an annual degradation rate below 0.40%. The series is directly comparable to the best peer benchmarks in its segment (HT-SAAE, Weran Solar), which offer equivalent 30-year warranty terms, confirming its position among the top-tier quality leaders. - **Insurer-Backed Warranty** - The datasheet officially states that both the product warranty and the power output warranty are underwritten by an international insurer. This is a rare feature in the segment—it provides investors with financial protection even in the event of manufacturer liquidity issues, which is particularly significant for utility-scale solar projects with project finance structures. - **BNEF Top 6 Bankability – Financing Accessibility** - In BloombergNEF's 2023 bankability ranking, Astronergy advanced to the Top 6 among global module manufacturers, maintaining Tier-1 status through Q1 2026. This standing facilitates access to project financing from commercial banks and development finance institutions, which is critical for large-scale utility PV projects. ## Cons - **15-Year Product Warranty vs. 25 Years from Competitors** - While leading premium-segment manufacturers (Jinko Solar, JA Solar, Trina Solar, LONGi) standardly offer 25-year product warranties covering frames, coatings, and wiring, the Astronergy N7 is limited to 15 years—40% shorter. For long-term industrial projects and PPAs extending beyond 15 years, this may require additional service provisions to be incorporated into contracts, even though the warranty risk is partially mitigated by the insurer-backed coverage. ## About this series The Astronergy ASTRO N7 CHSM66RN(DG)/F-BH series represents a breakthrough in energy efficiency, utilizing state-of-the-art **n-type TOPCon 4.0** cells with rectangular silicon wafer technology. This solution eliminates the problem of limited installation space, offering significantly higher power density than standard modules. Thanks to the **bifacial double glass** construction, these panels effectively absorb light reflected from the ground, which, combined with a double layer of tempered glass, drastically increases resistance to degradation caused by external factors and the PID phenomenon. It is an excellent choice for demanding industrial investors and solar farm owners for whom the **lowest levelized cost of energy (LCOE)** in a long-term perspective is key. What sets them apart from the competition is an exceptionally low temperature coefficient and better performance in diffused light conditions, which guarantees stable yields even on less sunny days typical of the Polish climate. Innovative **SMBB (Super Multi-Busbar)** technology optimizes current flow and protects against micro-cracks, ensuring investment security. This series is dedicated to professional systems where the priority is **maximum durability and reliability** under heavy mechanical loads, making it a leader in the premium bifacial module segment. ## Notable figures - At 22.4% efficiency, this panel is on par with typical \*\*TOPCon 600-650W\*\* modules - 224.0 W/m² power density is 3.7 W/m² below \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - requires larger installation area - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 600-650W\*\* panels - #4774 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What warranty is provided for Astronergy ASTRO N7 CHSM66RN(DG)/F-BH panels? The ASTRO N7 CHSM66RN(DG)/F-BH series comes with a 15-year product warranty covering material and workmanship defects, as well as a 30-year linear power output warranty. After 30 years of operation, the panel is guaranteed to retain at least 87.4% of its nominal power output. Astronergy's warranty is additionally backed by an international insurance provider, protecting the investment even in the event of the manufacturer's financial difficulties. ### Are Astronergy ASTRO N7 620W panels suitable for a utility-scale PV farm in Poland? Yes. The ASTRO N7 CHSM66RN(DG)/F-BH series, with power output up to 620 Wp, is purpose-built for large commercial installations and solar farms. The bifacial double glass construction harvests energy from both sides of the module, which on open terrain with a reflective ground surface can increase energy yield by several percentage points. The low temperature coefficient (-0.29%/°C) ensures stable performance even on hot summer days, while the dual tempered glass construction provides strong resistance to mechanical loads and the weather conditions typical of Poland. ### What is the TOPCon 4.0 technology used in ASTRO N7 panels and why is it superior to PERC? TOPCon 4.0 (Tunnel Oxide Passivated Contact) is an n-type cell technology in which a thin tunnel oxide layer minimizes charge carrier recombination. Compared to mainstream PERC cells (p-type), it delivers higher module efficiency (up to 23.5%), a lower temperature coefficient, and significantly reduced susceptibility to LID and PID degradation. The result is more energy generated from the same roof or ground area throughout the entire operational lifetime of the installation. ### How much does an ASTRO N7 CHSM66RN(DG)/F-BH panel weigh, and will a standard rooftop structure support this installation? The ASTRO N7 CHSM66RN(DG)/F-BH module weighs approximately 31.6 kg and measures 2382 × 1134 × 30 mm. Due to its double glass (glass-glass) construction, it is heavier than typical monofacial modules. Before mounting on an industrial building or warehouse roof, it is advisable to commission a structural load assessment by a licensed structural engineer, particularly when a large number of modules is involved. For ground-mounted solar farms, the module weight poses no practical limitation. ### How does the Astronergy ASTRO N7 CHSM66RN(DG)/F-BH differ from monocrystalline PERC panels available at a similar price point? The key differences lie in cell technology and module construction. The ASTRO N7 uses n-type TOPCon 4.0 cells rather than p-type PERC, which translates to higher efficiency (up to 23.5% vs. a typical 21–22% for PERC), a lower temperature coefficient, and better performance under diffuse irradiance on overcast days. Additionally, the bifacial double glass design generates energy from both sides of the module and offers superior resistance to PID degradation, meaning that over a 30-year project lifetime the total energy yield is higher, despite the higher upfront purchase price. ### Do Astronergy ASTRO N7 panels perform efficiently in winter and under the overcast conditions characteristic of the Polish climate? Yes. The n-type TOPCon cells used in the ASTRO N7 series feature a low temperature coefficient for Pmax of -0.29%/°C, which means reduced power losses in summer heat as well as relatively better performance on cold, sunny winter days. The SMBB (Super Multi Busbar) technology combined with rectangular silicon wafers also improves energy harvest under diffuse light conditions, which are typical of the Polish sky during the autumn and winter months. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/600620ASTRO-N7_CHSM66RNDGF-BH_2382x1134x30_EN_20240229-439a9b98ec5f.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +45 W, lighter, +2.8 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +40 W, lighter, +2.6 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | -45 W, lighter, +2.4 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +35 W, lighter, +2.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | -50 W, lighter, +2.2 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +30 W, lighter, +2.2 pp | | [Astronergy CHSM66RN(DG)/F-BH-600Wp](https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bh-600wp) | 600 W | Very close match | | [Astronergy CHSM66RN(DG)/F-BH-610Wp](https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bh-610wp) | 610 W | +0.2 pp | | [Astronergy CHSM66RN(DG)/F-BH-615W](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66rn-dg-f-bh-615w) | 615 W | +10 W, lighter, +0.4 pp | | [Astronergy CHSM66RN(DG)/F-BH-620W](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66rn-dg-f-bh-620w) | 620 W | +15 W, lighter, +0.6 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +75 W, lighter, +2.8 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +70 W, lighter, +2.6 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +95 W, cooler, +2.6 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +90 W, cooler, +2.5 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +65 W, lighter, +2.4 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +65 W, lighter, +2.4 pp | --- Source: https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bh-605wp Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.