--- title: "Rarlon PV Tech RL300HM-60 300W Solar Panel - Specs & Review | ComparePV" description: "Rarlon PV Tech RL300HM-60 300W solar panel. Specs: 18.44% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/rarlon-pv-tech-rl300hm-60" updated: 2026-09-11 --- # Rarlon PV Tech RL300HM-60 Middle of its segment, weak in heat 1,792 panels in the 200-400 W band, all technologies ## Identity - **Manufacturer:** Rarlon PV Tech - **Model:** RL300HM-60 - **Series:** Monocrystalline Black - **Rated power:** 300 W - **Cell technology:** Monocrystalline ## How it compares Compared against 200-400 W band, all technologies (1792 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 300 W | 355 W | Weak - bottom 20% | | | Module efficiency | 18.44% | 19.40% | Typical | 13,123 | | Power density | 184.4 | 193.8 | Typical | 13,097 | | Temperature coefficient | -0.470 | -0.350 | Weak - bottom 1% | 13,879 | | Weight (kg) | 17.0 kg | 20.8 kg | Typical | | | Performance warranty | - | 25 yrs | | | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 18.44% | 19.40% | Typical | 13,123 | | Power density | 184.4 | 193.8 | Typical | 13,097 | | Temperature coefficient | -0.470 | -0.350 | Weak - bottom 1% | 13,879 | | Weight per kWp | 56.7 | 59.4 | Typical | 10,801 | | Performance warranty | - | 25 yrs | | | ### Watch out for - **-0.470 %/°C temperature coefficient** - Bottom 1% of the 200-400 W band, against a median of -0.350. Ranked 13,879th in the whole database. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 300 W - **Efficiency:** 18.44 % - **Voltage at Pmax (Vmp):** 31.89 V - **Current at Pmax (Imp):** 9.41 A - **Open-circuit voltage (Voc):** 39.21 V - **Short-circuit current (Isc):** 9.89 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.470 %/degC - **Temperature coefficient of Voc:** -0.346 %/degC - **Temperature coefficient of Isc:** 0.036 %/degC - **NOCT:** 47 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 60 ### Physical - **Length:** 1640 mm - **Width:** 992 mm - **Thickness:** 35 mm - **Weight:** 17.0 kg - **Area:** 1.63 m2 - **Power density:** 184.4 Wp/m2 ### Warranty and degradation ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13123 of 14005 | | Power density | 13097 of 14005 | | Temperature coefficient | 13879 of 14005 | | Weight | 10801 of 14005 | | Warranty | 13880 of 14005 | ## Pros - **Above-median efficiency for the segment** - Efficiency of 18.44-19.05% exceeds the Selfa SV120M.3.2 (17%) by over 1.4-2 pp and is on par with or above Canadian Solar's BiKu (18.4%) and KuBlack CS3K-MS (18.7%) - a solid position among comparable mono modules in this power class. - **Half-cut + MBB reduce power losses** - Half-cut cell design combined with multi-busbar (MBB) contacting reduces resistive losses and hot-spot effect, improving module behavior under partial shading and increasing resistance to micro-cracks over the panel's service life. - **Uniform all-black aesthetic** - Full black finish (frame, backsheet, cells) eliminates the contrasting 'checkerboard' look typical of older modules - a meaningful advantage on visible residential roof surfaces and facades. - **Proven, continuous production since 2017** - The series has been on the market uninterrupted since 2017 (not discontinued), giving it roughly a 9-year track record and continued after-sales support availability, unlike models already phased out. ## Cons - **Low power class by current market standards** - The 300-310 Wp range corresponds to an older cell format (72-cell half-cut), while current Tier-1 series (including Canadian Solar) already offer 400-450+ Wp in a comparable module footprint - meaning more panels and larger mounting area per kWp installed. - **No confirmed BNEF Tier-1 status** - Unlike Canadian Solar (an established Tier-1 manufacturer), Rarlon PV Tech is not confirmed on the BNEF Tier-1 list, which can matter when assessing project bankability and financing eligibility with institutions that require Tier-1-classified modules. ## About this series The Rarlon PV Tech Monocrystalline Black series consists of panels designed for installations where both aesthetics and stable energy production are important. They are characterized by a **sleek, uniform design** that complements modern roofs and facades - without contrasting frames or a "gridded" appearance on the panels. The **monocrystalline cells** provide high efficiency in daily operation, and the **half-cut** design helps minimize losses and improves the module's performance under partial shading, for example, from a chimney, skylight, or balustrade. This is a real advantage for single-family homes in dense residential areas, and for small businesses where it is not always possible to perfectly plan the exposure. Furthermore, thanks to solutions such as **multi-busbar connection (MBB)**, the series is designed for better current collection and greater resistance to micro-cracks during operation. This is a good choice for investors who want an aesthetically pleasing PV installation without compromising on durability and predictability of energy yields. ## Notable figures - Module efficiency of 18.4% is 3.4pp below average for \*\*database\*\* panels (median: 21.8%) - Power density of 184.4 W/m² is 33.7 W/m² below \*\*database\*\* median (218.1 W/m²) - needs more roof space - At -0.47%/°C, loses 0.17pp more power per degree than \*\*database\*\* median (-0.30%/°C) - 17.0 kg weight - 9.5 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort - Ranked #13123 out of 14005 panels for efficiency in the database ## Questions ### Do Rarlon PV Tech Monocrystalline Black panels perform well under partial shading, for example from a chimney or dormer? Yes, the Monocrystalline Black series is a solid choice for rooftops with elements that cause partial shading. The half-cut cell design splits each cell in two, so a shaded section of the module does not fully block the output of the remaining area. This translates into real energy gains when an ideal shade-free installation is not possible — for instance, in dense residential areas or on roofs with chimneys and dormers. ### What is the maximum power output of the Rarlon PV Tech Monocrystalline Black panels? The Rarlon PV Tech Monocrystalline Black series reaches a peak output of up to 310 Wp, measured under Standard Test Conditions (STC). When paired with a properly sized inverter and an optimized mounting angle, an installation based on these modules delivers stable and predictable energy production throughout the year, regardless of the season. ### What does MBB technology mean in the Rarlon PV Tech Monocrystalline Black series, and does it matter in day-to-day use? MBB (multi-busbar) uses a higher number of thinner conductive busbars to collect current from the cell surface. The benefits are twofold: improved current collection efficiency and greater resistance to microcracks that can develop over years of operation. In practice, this means a lower risk of degradation and more stable energy yields after 10 or 20 years of use. ### How does the appearance of the Rarlon PV Tech Monocrystalline Black panels differ from standard solar modules? The Monocrystalline Black series features a fully black aesthetic — black cells, black frame, and black backsheet — creating a uniform, dark panel without the checkerboard pattern visible on standard white-backsheet modules. This design integrates seamlessly with modern roofs and facades where the look of the installation matters as much as its performance. ### What warranty comes with the Rarlon PV Tech Monocrystalline Black panels? The Monocrystalline Black series typically includes a product warranty covering material and workmanship defects, along with a linear power output warranty extending up to 25–30 years. Exact annual power thresholds and claim procedures should be confirmed in the current product datasheet or through an authorized distributor, as terms may vary by market. ### Are the Rarlon PV Tech Monocrystalline Black panels bifacial? No — the Monocrystalline Black series consists of monofacial modules. Energy is generated only by the front surface of the panel. No white reflective substrate or special roof structure is required for efficient operation, which simplifies installation and reduces balance-of-system (BoS) costs in standard pitched and flat-roof installations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/5ee9c81a2ed48-61b9e8670b35.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Cooler, lighter, +4.9 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, lighter, +4.9 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | Cooler, lighter, +4.9 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | +30 W, cooler, +4.7 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | +30 W, cooler, +4.7 pp | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -15 W, lighter, +4.6 pp | | [Gamko New Energy GKA182M260W](https://comparepv.com/panel/gamko-new-energy-gka182m260w) | 260 W | -40 W, lighter, +4.6 pp | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | -30 W, lighter, +4.6 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | +4.6 pp | | [Rarlon PV Tech RL250HM-60](https://comparepv.com/panel/rarlon-pv-tech-rl250hm-60) | 250 W | -50 W, -3.1 pp | | [Rarlon PV Tech RL260HP-60](https://comparepv.com/panel/rarlon-pv-tech-rl260hp-60) | 260 W | -40 W, -2.5 pp | | [Rarlon PV Tech RL270HM-60](https://comparepv.com/panel/rarlon-pv-tech-rl270hm-60) | 270 W | -30 W, -1.8 pp | | [Rarlon PV Tech RL280HM-60](https://comparepv.com/panel/rarlon-pv-tech-rl280hm-60) | 280 W | -20 W, -1.2 pp | | [Rarlon PV Tech RL290HM-60](https://comparepv.com/panel/rarlon-pv-tech-rl290hm-60) | 290 W | -10 W, -0.6 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +100 W, cooler, +4.2 pp | | [Lina Energy LEPV 400](https://comparepv.com/panel/lina-energy-lepv-400) | 400 W | +100 W, cooler, +3.9 pp | --- Source: https://comparepv.com/panel/rarlon-pv-tech-rl300hm-60 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.