--- title: "Astronergy CHSM66RN(DG)/F-BH-605 605W Solar Panel - Specs & Review | ComparePV" description: "Astronergy CHSM66RN(DG)/F-BH-605 605W solar panel. Specs: 22.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/astronergy-chsm66rn-dg-f-bh-605" updated: 2026-09-11 --- # Astronergy CHSM66RN(DG)/F-BH-605 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-605 - **Series:** ASTRO N7 - **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:** Commercial and utility-scale. - **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 - **TOPCon 4.0 + SMBB – Lowest Pmax Temperature Coefficient** - N-type TOPCon 4.0 cells with Super Multi-Busbar technology achieve a Pmax temperature coefficient of -0.29%/°C, outperforming standard PERC modules (-0.34 to -0.35%/°C). This translates into meaningfully higher energy yield on hot summer days, while the absence of LID/LeTID eliminates the step degradation typical of the first year of operation. - **30-Year Power Warranty, Degradation ≤0.4%/Year** - Astronergy guarantees retention of >87.4% of nominal power after 30 years, with annual degradation ≤0.4% (years 2–30) and \<1% in year one. Peer comparables in this segment (HT-SAAE, Weran Solar) offer an identical warranty horizon; however, Astronergy's warranty backed by a third-party insurer (standard since 2023) strengthens its credibility for project finance transactions. - **Bifacial Double-Glass – Up to 25% Rear-Side Gain** - The bifacial double-glass construction enables additional energy yield from reflected irradiance — Astronergy claims up to 25% bifacial gain, which under optimal conditions (high-albedo ground surface, adequate mounting gap) pushes the module's effective power to ~750–769 W with no increase in BoS costs. Tempered glass on both sides simultaneously improves mechanical resistance and eliminates the risk of EVA encapsulant degradation. - **Top 6 BNEF Bankability 2023, Tier 1 for Years** - Astronergy (Chint Group) ranked 6th in the BloombergNEF PV Module Bankability 2023 ranking with 56 GW of manufacturing capacity, placing it firmly among the world's leading module manufacturers. BNEF Tier 1 status is critical for projects seeking non-recourse bank financing — lenders and insurers accept these modules without additional technical due diligence. - **22.2–23% Efficiency in 66-Cell Format** - The series achieves up to 23% module efficiency in the standard 66 rectangular-cell format (2,382×1,134 mm), matching the top peer comparables (HT-SAAE HT66-18X – 23%, Weran Solar LR7-72HTH – 23%). The Light Redirecting Film applied to the front glass further improves yield under low solar incidence angles, characteristic of Polish installations from autumn through spring. ## Cons - **The N7 2.0 Series Offers Noticeably Superior Specifications** - Astronergy has already launched the ASTRO N7 2.0 (625–650 W, efficiency 23.1–24.1%), which surpasses the N7 series reviewed here (600–620 W, 22.2–23%) by approximately 1 percentage point in efficiency and up to 30 W in peak power. For new projects commissioned in 2025–2026, it is worth comparing the availability and pricing of the N7 2.0, as it may deliver a lower LCOE for the same installation footprint. ## About this series The Astronergy ASTRO N7 series redefines energy efficiency standards, using advanced **n-type TOPCon 4.0** technology and innovative, rectangular silicon cells. Thanks to this unique design, these modules offer significantly higher power density than traditional solutions, making them an ideal choice for investments with limited roof or ground space. A key differentiator of the series is the **use of SMBB technology** (Super Multi-Busbar), which, in combination with a high-transmittance glass coating, guarantees maximum yields even in difficult lighting conditions typical for the Polish climate. ASTRO N7 panels effectively solve the problem of power degradation over time, offering exceptional stability and longevity, which directly translates into **minimizing LCOE energy costs** throughout the entire installation life cycle. This series is primarily designed for demanding commercial projects and photovoltaic farms, where precision and the highest rate of return matter. What sets it apart from the competition is its **exceptional resistance to micro-cracks** and an excellent temperature coefficient, ensuring high power production even on hot days. Choosing this series means opting for a modern **bifacial double-glass construction**, which allows for additional energy generation from reflected radiation, ensuring the unrivaled profitability of modern photovoltaic systems. ## Notable figures - At 22.4% efficiency, this panel is on par with typical \*\*TOPCon 600-650W\*\* modules - Power density of 224.0 W/m² is 3.7 W/m² below \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - needs more roof space - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 600-650W\*\* median - In the top 34% for efficiency among all TOPCon panels ## Questions ### What warranty comes with the Astronergy ASTRO N7 panels? The ASTRO N7 series is backed by a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. After 30 years of operation, the panel retains at least 87.4% of its original nominal power. This is one of the longest power warranties available on the market, which directly reduces the LCOE over the full lifetime of the installation. ### Do the Astronergy ASTRO N7 panels perform well in summer heat? Yes. The n-type TOPCon 4.0 technology used in the ASTRO N7 series delivers a highly favorable temperature coefficient of approximately -0.30%/°C. This means the panels lose significantly less power during high-temperature conditions than older p-type PERC modules. In practice, during summer operation at a module temperature of 70°C, power losses are several percentage points lower than those of typical polycrystalline panels. ### What is the bifacial technology in the ASTRO N7 panels, and does it actually generate more energy? Bifacial means that the ASTRO N7 panel generates current from both the direct irradiance on the front side and the reflected irradiance captured through the rear glass from the ground or surrounding surfaces. Depending on the albedo of the surface beneath the array — such as light-colored gravel ballast, a white roofing membrane, or snow — the rear-side gain ranges from 5% to as much as 20% additional yield. The double-glass construction also protects the cells from moisture ingress and extends the overall service life of the module. ### Is Astronergy a reliable manufacturer — is the ASTRO N7 a premium-tier panel? Astronergy holds Bloomberg NEF Tier 1 manufacturer certification, meaning it meets the rigorous financial and quality requirements necessary for bankable project financing. The company is part of the CHINT Group and has over 15 years of experience in the photovoltaic market. ASTRO N7 panels featuring TOPCon 4.0 technology are widely specified for commercial PV farms and industrial-scale installations. ### What types of installations is the Astronergy ASTRO N7 620W series best suited for? The ASTRO N7 series, rated up to 620 Wp, is intended primarily for commercial, industrial, and utility-scale PV projects where high power density per square meter and long-term yield stability are critical. The modules are well suited for large flat roofs of manufacturing facilities and warehouses, as well as ground-mounted structures. Due to their large dimensions and weight, these panels are not typically recommended for small residential rooftop installations on single-family homes. ### How does SMBB technology in the ASTRO N7 panels differ from conventional panels, and why does it matter? SMBB (Super Multi-Busbar) replaces a small number of wide busbars with a larger array of thin conductive wires. In the ASTRO N7, this translates to shorter current-flow paths, lower resistive losses, and higher energy yield. Crucially, the numerous thin wires are far more resistant to cell microcracks than conventional busbars. Damage to a single wire does not isolate an entire cell string, which significantly improves the long-term reliability of the module. ## 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-605 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.