Light for its output, needs the roof space
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.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
Roofs where every square metre has to count, tight roof space and owners who want a long output guarantee.
Top 9% of the PERC 500-550 W segment, against a median of 53.0. Ranked 2,698th in the whole database.
Bottom 15% of the PERC 500-550 W segment, against a median of 209.0.
Bottom 17% of the PERC 500-550 W segment, against a median of 20.90%.
Bottom 23% of the PERC 500-550 W segment, against a median of 30 yrs.
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.
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.
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.
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.
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.
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.
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.
- At 20.5% efficiency, this panel is on par with typical PERC 500-550W modules
- 205.2 W/m² power density is 3.8 W/m² below PERC 500-550W median (209.0 W/m²) - requires larger installation area
- Temperature coefficient of -0.35%/°C matches the PERC 500-550W median
- 26.0 kg weight - 2.4 kg lighter than PERC 500-550W median (28.4 kg), reducing installation effort
- #11244 for efficiency, #10419 for temperature performance out of 14005 panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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