--- title: "Heliene 156HC M10 SL Bifacial - 585W class 585W Solar Panel - Specs & Review | ComparePV" description: "Heliene 156HC M10 SL Bifacial - 585W class 585W solar panel. Specs: 20.90% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-585w-class" updated: 2026-09-11 --- # Heliene 156HC M10 SL Bifacial - 585W class Middle of its segment, modest efficiency 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Heliene - **Model:** 156HC M10 SL Bifacial - 585W class - **Series:** 156HC M10 SL Bifacial Module - **Rated power:** 585 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) | 585 W | 560 W | Typical | | | Module efficiency | 20.90% | 21.29% | Weak - bottom 21% | 10,072 | | Power density | 209.4 | 212.9 | Weak - bottom 21% | 9,965 | | 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 | 20.90% | 21.29% | Weak - bottom 21% | 10,072 | | Power density | 209.4 | 212.9 | Weak - bottom 21% | 9,965 | | Temperature coefficient | -0.340 | -0.350 | Typical | 8,778 | | Weight per kWp | 53.0 | 52.7 | Typical | 6,697 | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Watch out for - **20.90% module efficiency** - Bottom 21% of the PERC 550-600 W segment, against a median of 21.29%. - **209.4 watts per square metre** - Bottom 21% of the PERC 550-600 W segment, against a median of 212.9. - **25 year performance warranty** - Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Utility-scale, commercial and shaded-installations. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 585 W - **Efficiency:** 20.90 % - **Voltage at Pmax (Vmp):** 45.85 V - **Current at Pmax (Imp):** 12.77 A - **Open-circuit voltage (Voc):** 54.41 V - **Short-circuit current (Isc):** 13.50 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:** 209.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years - **First-year degradation:** 2.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 488 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10072 of 14005 | | Power density | 9965 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 6697 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Bifacial half-cut M10 design** - The module harvests energy from both faces: M10 PERC half-cut cells reduce CTM losses, and the rear glass enables a typical bifacial gain of 10–20% on high-albedo surfaces (gravel, light concrete, TPO membranes). The split junction box further stabilizes current flow under partial shading conditions. - **Tier-1 bankable status** - Heliene is recognized as a bankable manufacturer (confirmed by context data and distributors), simplifying lender due diligence and meeting the requirements of standard project finance agreements. This is particularly relevant for utility-scale PV projects with long-term debt financing. - **25-year linear power warranty, ≥86% retention** - Datasheet rev.02 confirms: power ≥86% Pnom after 25 years, with 2% first-year degradation and 0.5%/yr thereafter. This meets the utility-class benchmark and is sufficient for standard LCOE analyses over a 20–25-year project horizon. - **1500 V DC system voltage** - Compatibility with 1500 V inverters allows longer string configurations and reduced BoS costs: fewer DC cables and fewer MPPT trackers per megawatt — a standard requirement for utility-scale installations above 1 MWp. ## Cons - **Efficiency 2–2.5 pp below N-type peers** - The series peaks at 20.9% efficiency, while direct peer comparables offer: Hanersun Hitouch 5N – 22.65%, Risen RSM144-9 – 22.6%, Q-SUN Qrystal N8 – 22.65%. The ~1.7–2.4 pp gap translates to approximately 8–10% less peak power from the same row footprint, increasing the module count, mounting costs, and land area required to achieve the same farm output. - **15-year product warranty** - Heliene provides a 15-year product warranty, while a growing portion of the market (including Risen, Q Cells, Trina) is standardizing on 25 years. In projects with 20-year PPAs or insurer requirements, this may necessitate additional risk assessment or individual negotiations with the manufacturer. - **PERC technology — declining market share, lower bifaciality factor** - In 2024, TOPCon N-type modules exceeded 66% of global production capacity (per PV-Tech/CEA), relegating PERC to generationally older technology status. PERC bifaciality factor is typically ~70% vs. ~80–85% for TOPCon, directly limiting the rear-side energy harvest efficiency of this series compared to N-type competitors offering the same nominal power. ## About this series The Heliene 156HC M10 SL Bifacial Module series is designed for maximum energy yield, where every square meter of installation matters. The use of a **bifacial design** allows for the utilization of reflected light from the ground, which significantly increases energy production in PV farms, ground-mounted systems, and on bright industrial roofs. The modules are based on **single-crystal PERC cells in M10 format**, and the **half-cut** design minimizes losses and improves performance under partial shading - which is particularly important in rows of tables, fences, or installations near technical facilities. The **split junction box** also supports even current flow and the overall stability of the module. In practice, this series solves the problem of reduced yield in challenging operating conditions, while also offering **high environmental resistance** and durability, which are essential for long-term financed projects. This makes it a good choice for investors and contractors looking for predictable performance and better energy production without complicating the project. ## Notable figures - At 20.9% efficiency, this panel is on par with typical \*\*PERC 550-600W\*\* modules - 209.4 W/m² power density is 3.5 W/m² below \*\*PERC 550-600W\*\* median (212.9 W/m²) - requires larger installation area - 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 72% for efficiency among all PERC panels ## Questions ### How much extra power does the Heliene 156HC M10 SL Bifacial Module actually produce thanks to its bifacial design? The module is rated at 585 W (STC) from the front side alone, but the bifacial design captures reflected light on the rear side as well. The bifacial gain typically ranges from 5 to 15% of additional energy output depending on ground albedo. Light-colored surfaces such as gravel, concrete, or snow deliver the highest gains in ground-mounted systems. On dark rooftops the rear-side contribution is minimal. ### What warranty does the Heliene 156HC M10 SL Bifacial Module come with? Heliene provides a 15-year product warranty covering material and manufacturing defects, and a 25-year linear power warranty. Degradation is guaranteed not to exceed 2% in the first year and no more than 0.50% per year thereafter, ensuring at least 86% of rated power output after 25 years. This is consistent with Tier 1 industry standards and supports long-term project financing. ### Does the half-cut cell technology in the Heliene 156HC M10 SL really matter when part of the array is shaded? Yes. The 156 half-cut PERC cells split the module into two electrically independent halves. Shading on the upper section, for example from mounting table rows, fencing, or nearby structures, does not shut down the entire module but limits losses to the shaded half only. The split junction box reinforces this design by maintaining stable current flow through each half independently. ### Do the Heliene 156HC M10 SL Bifacial panels perform well in colder climates? Yes. Monocrystalline PERC cells outperform polycrystalline in cold conditions, and the power temperature coefficient of approximately -0.34%/°C is among the lower values in this module class. Cold, sunny winter days can actually yield excellent output. The module is also rated for high snow and wind loads, making it suitable for northern European and similar climate conditions. ### What type of installations is the Heliene 156HC M10 SL Bifacial Module best suited for? This series is optimized for utility-scale PV farms, ground-mounted systems with fixed tilt or trackers, and large industrial or warehouse rooftops with light-colored surfaces. The large M10 cell format and up to 585 W per module reduce the total panel count for a given system capacity, lowering BoS costs and installation labor. For residential rooftop use the module dimensions are generally oversized. ### Is Heliene a reliable solar panel manufacturer, and where is the company based? Heliene is a Canadian solar manufacturer with Tier 1 classification from independent PV industry rating agencies. Tier 1 status confirms that the company meets strict financial, manufacturing, and quality criteria, which is a key requirement for bank financing and leasing structures in commercial and utility-scale projects. Heliene primarily serves North American and European markets. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/hspe-156hc-m10-sl-bifacial-rev-02-b33d81fc0cf4.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.9 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.7 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +50 W, cooler, +3.7 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +3.5 pp | | [Heliene 156HC M10 SL Bifacial - 565W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-565w-class) | 565 W | -20 W, -0.7 pp | | [Heliene 156HC M10 SL Bifacial - 570W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-570w-class) | 570 W | -15 W, -0.5 pp | | [Heliene 156HC M10 SL Bifacial - 575W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-575w-class) | 575 W | -10 W, -0.3 pp | | [Heliene 156HC M10 SL Bifacial - 580W class](https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-580w-class) | 580 W | Very close match | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +95 W, cooler, +4.3 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +90 W, cooler, +4.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +115 W, cooler, +4.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +110 W, cooler, +4.0 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +85 W, cooler, +3.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +85 W, cooler, +3.9 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +85 W, cooler, +3.9 pp | --- Source: https://comparepv.com/panel/heliene-156hc-m10-sl-bifacial-585w-class 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.