--- title: "Emmvee E540HCM144-B 540W Solar Panel - Specs & Review | ComparePV" description: "Emmvee E540HCM144-B 540W solar panel. Specs: 20.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/emmvee-e540hcm144-b" updated: 2026-09-11 --- # Emmvee E540HCM144-B Light for its output, short guarantee 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** Emmvee - **Model:** E540HCM144-B - **Series:** Graphite Monoperc Black on Black - **Rated power:** 540 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 540 W | 535 W | Typical | | | Module efficiency | 20.90% | 20.90% | Typical | 10,072 | | Power density | 209.0 | 209.0 | Typical | 10,100 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 26.0 kg | 28.4 kg | Strong - top 5% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.90% | 20.90% | Typical | 10,072 | | Power density | 209.0 | 209.0 | Typical | 10,100 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 48.1 | 53.0 | Strong - top 5% | 2,073 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 23% | 9,798 | ### Strengths - **48.1 kg per kWp** - Top 5% of the PERC 500-550 W segment, against a median of 53.0. Ranked 2,073rd in the whole database. ### Watch out for - **25 year performance warranty** - Bottom 23% of the PERC 500-550 W segment, against a median of 30 yrs. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 540 W - **Efficiency:** 20.90 % - **Voltage at Pmax (Vmp):** 41.54 V - **Current at Pmax (Imp):** 13.00 A - **Open-circuit voltage (Voc):** 49.50 V - **Short-circuit current (Isc):** 13.62 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 26.0 kg - **Area:** 2.58 m2 - **Power density:** 209.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 443 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10072 of 14005 | | Power density | 10100 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 2073 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Black-on-Black aesthetic design** - Black anodized frame and black backsheet create a uniform, discreet rooftop appearance - a key selling point in the residential segment where facade aesthetics often drive module choice. - **PERC half-cut cells with multi-busbar** - Half-cut cells reduce current losses and improve partial-shading tolerance, while multi-busbar technology lowers microcrack risk and series resistance losses - a proven design approach that increases real-world module longevity. - **25-year linear power warranty + PID resistance** - The manufacturer offers a segment-standard 12-year product warranty and 25-year linear power warranty, and certified PID (potential induced degradation) resistance limits power loss risk in long strings on large-scale installations. - **Long-established manufacturer track record** - Emmvee has been operating in the PV market since 1992, giving it a longer operational history than many competitors from Asia that entered the market only in the last decade - relevant when assessing warranty risk. ## Cons - **Lower efficiency than peer comparables** - Maximum efficiency of 21.03% is markedly lower than comparable 540 Wp models - Horay Solar HS 199R-120 (23.1%), Horay Solar HS 182-132 Ocean (22.7%), and Gokin GK-5-60HG (24.4%), a gap of up to 3.4 percentage points, meaning more roof area is needed to reach the same installed capacity. - **Manufacturer not on BNEF Tier 1 list** - Emmvee does not appear as a bankable Tier 1 manufacturer per BloombergNEF, which can complicate financing for large commercial projects requiring banks' Tier 1 criteria, though BNEF itself notes Tier 1 status does not reflect technical quality. - **PERC technology, no bifacial option** - The series uses only monofacial PERC cells, while comparable competitor models (e.g., Horay Solar HS 182-132 Ocean, N-type bifacial) offer additional rear-side energy yield - Graphite Black on Black does not provide this option. ## About this series The Graphite Monoperc Black on Black series is a photovoltaic module line built for the aesthetics of residential roofs and facades, where a uniform, all-black look of the installation matters most. The panel pairs an anodized black frame with a black backsheet and high-transmission, anti-reflective coated glass, allowing it to blend into the roof rather than visually dominate it. At its core are **half-cut monocrystalline PERC cells**, which reduce current losses and improve resilience to partial shading - a common challenge on complex roof layouts. The **multi-busbar technology** used ensures better current collection and lowers the risk of micro-cracks, extending the panel's real-world lifespan. The module also stands out for its **PID (potential-induced degradation) resistance**, which matters in large installations with long strings, and for its **low annual power degradation**, translating into more stable energy output over the entire service life. The reinforced construction withstands high snow and wind loads, making it suitable for both rooftop and ground-mount installations in demanding climates. Offered in several cell-count configurations, the series lets installers match panel size and power to the specific project - from single-family homes to commercial installations, where aesthetics matter alongside performance and a **low LCOE** over the system's lifetime. ## Notable figures - Efficiency of 20.9% matches the \*\*PERC 500-550W\*\* median - At 209.0 W/m² power density, roof space requirements are typical for \*\*PERC 500-550W\*\* panels - At -0.35%/°C, hot weather performance is typical for \*\*PERC 500-550W\*\* panels - At 26.0 kg, this panel is 2.4 kg lighter than \*\*PERC 500-550W\*\* median (28.4 kg) - easier handling during installation - #10072 for efficiency, #10419 for temperature performance out of 14005 panels ## Questions ### What is the power output of Emmvee Graphite Monoperc Black on Black panels? Modules from the Graphite Monoperc Black on Black series reach a maximum power output of up to 540 Wp. The panel uses monocrystalline PERC half-cut cells and multi-busbar technology, delivering high efficiency while keeping a uniform, all-black appearance across the entire module surface. ### Are Emmvee Graphite Monoperc Black on Black panels suitable for a pitched residential roof? Yes, the series was designed with residential roofs in mind, where aesthetics matter. The black anodized frame and black backsheet give a uniform, sleek look with no visible mounting hardware. The reinforced construction is rated for snow and wind loads, making it suitable for both pitched and flat roof installations. ### What warranty comes with Emmvee Graphite Monoperc Black on Black panels? The manufacturer offers a 12-year product warranty and a 25-year linear power output warranty. This means the module retains its guaranteed minimum performance over a quarter century of operation, which is standard for modern monocrystalline PERC-class panels. ### How do half-cut cells and multi-busbar technology differ from standard cells in Emmvee panels? Half-cut cells are cut in half, reducing current losses and improving the panel's tolerance to partial shading, such as from a chimney or tree. Multi-busbar technology improves current collection across the cell surface and lowers the risk of microcracks, resulting in greater durability and more stable energy production over time. ### Are Emmvee Graphite Monoperc panels PID-resistant and suitable for large-scale installations? Yes, the modules feature resistance to potential-induced degradation (PID), which matters for installations with long strings, typical of solar farms and large commercial sites. Combined with low annual power degradation, this ensures stable energy output and a lower LCOE over the installation's full lifecycle. ### Who manufactures Graphite Monoperc Black on Black panels, and is Emmvee a tier-1 manufacturer? The panels are manufactured by Emmvee, a company headquartered in India. It is not currently listed as a tier-1 manufacturer under BloombergNEF's classification, which is worth considering for project bankability, though it does not directly reflect the module's technical quality, as confirmed by its warranty specifications. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Graphite144132120108-India-11d2271e6318.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +4.1 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.9 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +3.8 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.7 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | -50 W, cooler, +3.6 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +3.6 pp, +5 yr warranty | | [Emmvee E530HCM144-B](https://comparepv.com/panel/emmvee-e530hcm144-b) | 530 W | -10 W, -0.4 pp | | [Emmvee E535HCM144-B](https://comparepv.com/panel/emmvee-e535hcm144-b) | 535 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +110 W, cooler, +4.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +105 W, cooler, +4.1 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +90 W, cooler, +3.5 pp | --- Source: https://comparepv.com/panel/emmvee-e540hcm144-b Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.