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The Niwa Black series - high performance meets elegant design


In the category of aesthetic high-performance modules for rooftop systems, the Jolywood Niwa Black series offers an ideal combination of high efficiency and modern design. With its all-black appearance, n-type TOPCon technology and an output of up to 420 W, it not only delivers maximum yields, but also blends in perfectly with the appearance of high-quality residential and commercial buildings.

Thanks to J-TOPCon 2.0 technology, low degradation and excellent low-light performance, the Niwa Black series ensures constant energy yields over many years - ideal for anyone who values efficiency, durability and aesthetics.
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The Niwa Black series - high-performance modules for aesthetic PV systems


The Niwa Black series combines advanced n-type TOPCon technology with an all-black design that is perfect for residential and commercial installations where aesthetics are important. With an output of up to 420 W and an efficiency of up to 21.51 %, the series offers high efficiency and an attractive appearance.

Thanks to the bifacial cell structure, the Niwa Black series can generate additional energy yield, while the J-TOPCon 2.0 technology ensures outstanding performance and durability. The low degradation and optimum temperature resistance ensure long-term stable and reliable electricity production.

Why the Niwa Black series?

  • High performance - modules with 400 W to 420 W and up to 21.51 % efficiency
  • Aesthetic design - black frame & black back, ideal for roof systems with high design standards
  • Low degradation - 1% in the first year, then only 0.4% per year for a long service life
  • Optimum temperature resistance - Low temperature coefficient of -0.30%/°C for high yields at high temperatures
  • High mechanical load capacity - Tested up to 5400 Pa snow load and 2400 Pa wind load
  • Excellent low-light performance - Efficient energy generation even with low solar radiation
  • J-TOPCon 2.0 technology - Improved cell technology for more stable energy production

Technical highlights

  • Power range: 400 W - 420 W
  • Efficiency: Up to 21.51 %
  • Temperature coefficient (Pmax): -0,30 %/°C
  • Nominal voltage: 1500 V (IEC)
  • Cell technology: n-type TOPCon, 108 half cells
  • Module size: 1722 × 1134 × 30 mm
  • Weight: 24.5 kg
  • Frame material: Anodized aluminium alloy
  • Protection class: IP68 (Junction Box)
  • Glass structure: 2 mm + 2 mm reinforced glass

Models of the Niwa Black series

  • JW-HD108N-400 - 400 W, efficiency 20.48 %
  • JW-HD108N-405 - 405 W, efficiency 20.74 %
  • JW-HD108N-410 - 410 W, efficiency 21.00 %
  • JW-HD108N-415 - 415 W, efficiency 21.25 %
  • JW-HD108N-420 - 420 W, efficiency 21.51 %

All models are based on J-TOPCon 2.0 technology and deliver stable yields over many years thanks to their high efficiency.

Maximum efficiency with the Niwa Black series


The Niwa Black series impresses with its high efficiency, modern design and reliable performance. Its bifacial TOPCon technology and improved cell structure make it the ideal choice for rooftop installations where aesthetics and performance are equally important.

Also discover other solar modules from Jolywood such as the JW Pro series and the Niwa Pro series.