--- title: "Heliene 156HC-580 M10 SL BIFACIAL 580W Solar Panel - Specs & Review | ComparePV" description: "Heliene 156HC-580 M10 SL BIFACIAL 580W solar panel. Specs: 20.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/heliene-156hc-580-m10-sl-bifacial" updated: 2026-09-11 --- # Heliene 156HC-580 M10 SL BIFACIAL Middle of its segment, needs the roof space 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Heliene - **Model:** 156HC-580 M10 SL BIFACIAL - **Series:** 156HC M10 SL Bifacial - **Rated power:** 580 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 580 W | 560 W | Typical | | | Module efficiency | 20.80% | 21.29% | Weak - bottom 13% | 10,457 | | Power density | 207.6 | 212.9 | Weak - bottom 11% | 10,588 | | Temperature coefficient | -0.340 | -0.350 | Typical | 8,778 | | Weight (kg) | 31.0 kg | 30.8 kg | Typical | | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.80% | 21.29% | Weak - bottom 13% | 10,457 | | Power density | 207.6 | 212.9 | Weak - bottom 11% | 10,588 | | Temperature coefficient | -0.340 | -0.350 | Typical | 8,778 | | Weight per kWp | 53.4 | 52.7 | Typical | 7,379 | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Watch out for - **207.6 watts per square metre** - Bottom 11% of the PERC 550-600 W segment, against a median of 212.9. - **20.80% module efficiency** - Bottom 13% of the PERC 550-600 W segment, against a median of 21.29%. - **25 year performance warranty** - Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Utility-scale and commercial. - **Not ideal for:** Roofs where every square metre has to count, tight roof space and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 580 W - **Efficiency:** 20.80 % - **Voltage at Pmax (Vmp):** 45.64 V - **Current at Pmax (Imp):** 12.70 A - **Open-circuit voltage (Voc):** 54.13 V - **Short-circuit current (Isc):** 13.48 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:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 156 - **Bifacial:** yes ### Physical - **Length:** 2464 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 31.0 kg - **Area:** 2.79 m2 - **Power density:** 207.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 86.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 484 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10457 of 14005 | | Power density | 10588 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 7379 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Bifacial construction** - The panels capture light reflected from the ground, boosting total energy yield by several to over ten percent versus monofacial modules, particularly on bright rooftop or ground surfaces. - **Half-cut PERC cells** - Splitting cells in half reduces power losses from partial shading and lowers hot-spot risk, resulting in more stable energy output under variable field conditions. - **3.2mm tempered glass with AR coating** - The 3.2mm front glass with anti-reflective coating delivers strong hail resistance and improved light absorption throughout the day, as confirmed in the manufacturer's official datasheet. - **Tier-1 manufacturer per BNEF** - Heliene is listed on the Bloomberg NEF Tier 1 list, operates manufacturing facilities in Canada (Sault Ste. Marie), and has been in business since 2010, providing strong bankability for commercial project financing. - **PID and humidity resistance** - The modules feature high resistance to potential-induced degradation (PID) and stable performance under elevated temperature and humidity, making them suitable for large-scale commercial and industrial installations. ## Cons - **Lower efficiency than TOPCon rivals** - The series tops out at 21.3% efficiency, while comparable peers using TOPCon technology (Solarspace Lumina II, Ulica Solar TOPCon) reach 23.03% at the same 595 Wp power class - a roughly 1.7pp gap that means more roof or ground area is needed for the same installed capacity. - **15-year product warranty** - The product warranty is 15 years, shorter than the 25-year standard now offered by many Tier-1 manufacturers (including some of Heliene's own N-type lines), even though the linear power warranty still runs 25 years. - **Older-generation PERC technology** - PERC cells show higher initial degradation (2% in year one, 0.5% annually thereafter) compared to newer N-type/TOPCon cells, which offer lower degradation rates and better long-term power stability. ## About this series The Heliene 156HC M10 SL Bifacial series consists of dual-sided modules engineered to maximize energy harvest from every available square meter of roof or ground space. Thanks to **half-cut monocrystalline PERC cells**, these panels reduce power losses caused by partial shading and overheating, resulting in more stable energy production across variable operating conditions. A key advantage of the series is its **bifacial construction**, which captures light reflected from the ground surface to significantly boost the installation's total energy yield, especially on bright or reflective terrain. The modules feature a **3.2 mm tempered front glass with an anti-reflective coating**, providing strong resistance to hail and intensive use while improving light absorption throughout the day. These panels also demonstrate **high resistance to potential induced degradation (PID)** and stable performance under elevated temperature and humidity, making them a solid choice for large-scale commercial and industrial installations. The 156HC M10 SL Bifacial series is well suited for projects where predictable, long-term performance and low lifetime energy cost matter most, backed by a **long-term product warranty and linear power output warranty**. ## Notable figures - Efficiency of 20.8% matches the \*\*PERC 550-600W\*\* median - At 207.6 W/m², this panel generates 5.3 W/m² less per unit area than \*\*PERC 550-600W\*\* median (212.9 W/m²) - Temperature coefficient of -0.34%/°C matches the \*\*PERC 550-600W\*\* median - Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface - In the top 75% for efficiency among all PERC panels ## Questions ### Are Heliene 156HC M10 SL Bifacial panels suitable for ground-mount installations with light-colored ground? Yes, this is one of the series' primary use cases. The bifacial design captures light reflected off the ground surface, so the panels perform best over light or reflective surfaces such as gravel, white roofing, or snow. In practice, the rear-side energy gain can range from a few percent up to the low teens depending on ground albedo. ### What warranty comes with Heliene 156HC M10 SL Bifacial modules? The manufacturer offers a 15-year product warranty and a 25-year linear power warranty. This covers both material and workmanship defects as well as excessive power degradation over time, resulting in a predictable levelized cost of energy (LCOE) throughout the system's lifetime. ### How does the half-cut PERC cell technology in this series differ from standard cells? Half-cut cells are cut in half, reducing resistive and current losses and limiting the impact of partial shading on the whole module's output. Combined with PERC technology, which improves light absorption through an additional rear passivation layer, the module achieves higher efficiency and more stable performance in variable conditions than standard full-cell modules. ### What is the maximum power output of a single panel in the 156HC M10 SL Bifacial series? The maximum power rating in this series is 595 Wp. Thanks to the high unit power and bifacial technology, an installation of a given area can achieve a higher total energy yield than with lower-wattage panels, lowering the installation cost per kilowatt. ### Is Heliene a Tier 1 manufacturer, and where is it headquartered? Yes, Heliene is a Tier 1 manufacturer, confirming the company's financial stability and the bankability of projects built with its modules. The company is headquartered in Canada, which matters to some investors, particularly in North America, due to local supply chains and domestic content requirements in certain incentive programs. ### Is the front glass on the 156HC M10 SL Bifacial panels hail-resistant? Yes, the modules feature 3.2 mm tempered front glass with an anti-reflective coating. This construction provides high mechanical resistance to hail impact and heavy-duty use, while also improving light absorption and reducing reflections throughout the day, which supports a higher overall energy yield. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/HSPE_156HC_M10_SL_Bifacial_Rev03-442025-d20c560e3873.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +4.0 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.8 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +50 W, cooler, +3.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +3.6 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +3.6 pp | | [Heliene 156HC M10 SL Bifacial - 565W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-565w-class) | 565 W | -15 W, -0.6 pp | | [Heliene 156HC M10 SL Bifacial - 570W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-570w-class) | 570 W | -10 W, -0.4 pp | | [Heliene 156HC M10 SL Bifacial - 575W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-575w-class) | 575 W | Very close match | | [Heliene 156HC M10 SL Bifacial - 585W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-585w-class) | 585 W | Very close match | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +100 W, cooler, +4.4 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +95 W, cooler, +4.2 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +120 W, cooler, +4.2 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +115 W, cooler, +4.1 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +90 W, cooler, +4.0 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +90 W, cooler, +4.0 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +90 W, cooler, +4.0 pp | --- Source: https://comparepv.com/panel/heliene-156hc-580-m10-sl-bifacial 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.