Strong in heat, no clear weak spot
The Panasonic EVERVOLT Solar Module PK Black Series consists of all-black panels designed for aesthetically pleasing rooftop installations and stable energy production in real-world conditions. The use of half-cut cells with PERC technology improves light utilization and reduces losses, which translates to high efficiency, especially in situations where every fraction of a roof area counts. A key feature is improved performance under partial shading - the series helps minimize energy losses when shadows from chimneys, trees, or roof elements appear during the day. In practice, this is a solution for single-family homes and small prosumer installations that need to operate reliably even in the summer, when the modules heat up significantly, thanks to excellent temperature characteristics. Another important argument for investors is the long-term warranty, which covers not only parameters but also durability, making it easier to compare with competitors that focus solely on nominal power.
Ranking
Signals from the data
Residential and shaded-installations.
Top 15% of the PERC 350-400 W segment, against a median of -0.350.
Top 16% of the PERC 350-400 W segment, against a median of 19.90%.
Top 19% of the PERC 350-400 W segment, against a median of 199.0.
The 370 Wp variant reaches 20.3% efficiency, matching the top peer comparable (Selfa SV120M.3.2 at 20.3%) and outperforming Solitek SOLID Bifacial (19.57%) and Solarwatt vision GM 3.0 style (19.9%). This is a leading result for half-cut PERC technology.
The warranty simultaneously covers product, power, parts, and labor for 25 years, with guaranteed power retention of at least 86% after that period. Panasonic committed to honor these terms despite exiting the PV market in April 2025.
The combination of half-cut PERC cells with full resistance to Potential Induced Degradation (PID) delivers one of the lower annual power-loss rates in the segment, resulting in more predictable energy yield over the module's lifetime.
The half-cut cell architecture limits production drops caused by shade from chimneys, trees, or roof elements during the day, which matters for typical single-family rooftop installations with irregular sun exposure.
Panasonic is a Japanese corporation operating since 1918, with a long history in photovoltaics and a recognized brand in premium markets (e.g., the US), historically translating into high build quality and tight process control.
Panasonic exited the solar PV market on April 28, 2025, ending the entire EVERVOLT line, including the PK Black Series. Despite commitments to honor AllGuard/TripleGuard warranties, availability of service, spare parts, and replacement modules for claims will be limited.
The series uses only monofacial PERC cells, while the comparable competitor Solitek SOLID Bifacial (370 Wp, 19.57% efficiency) offers additional energy yield from the rear side of the module - a potential advantage lost when installing on bright ground surfaces or elevated racking.
- Efficiency of 20.3% is 0.9pp above the PERC 0-400W median (19.4%)
- Power density of 202.7 W/m² packs 8.5 W/m² more into the same footprint vs PERC 0-400W median (194.2 W/m²)
- At -0.34%/°C, hot weather performance is typical for PERC 0-400W panels
- Weight of 19.5 kg is typical for PERC 0-400W panels
- #11851 for efficiency, #8846 for temperature performance out of 14129 panels
Specifications
Datasheet charts
Measured curves published by Panasonic in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 370 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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About the EVERVOLT Solar Module PK Black Series series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.