BISOLBISOL premium quality mono- and multicrystalline silicon photovoltaic modules exhibit the highest energy yield and consist of high quality, proven, and certified materials. All products are manufactured in Europe and undergo strict quality control at every stage of the production process. The modules comply with the principal international standards IEC 61215, Ed.2 and IEC 61730 and carry the MCS certificate (Microgeneration Certification Scheme), mandatory for the UK market. BISOL Group offers an extended 10-year product warranty, in addition to the standard 25-year warranty of power output. 

Reliable international module tests and excellent performance of existing PV power plants confirmed the superior energy yield achieved by BISOL modules, ensuring the highest electricity production of PV power plants and notably higher returns on investment.



For the reason of highly advanced product design and production properties, BISOL photovoltaic modules exhibit the highest energy yield recorded in low as well as in high irradiation areas. High kWh/kWp performance originates from:


  • Very high shunt resistance for improved performance at low irradiation and very low series resistance for improved performance at high irradiation,
  • Pre-sorting according to PMPP and IMPP leveraging out module mismatch losses,
  • Lowest NOCT of just 44° C (due to negative γ of solar cells every additional ° C reduces energy yield by 0.43 %),
  • EVA foil with negligible Yellowing Index (due to degradation processes EVA foil gradually turns from transparent to yellow colour reducing the amount of incident light),
  • High EVA gel content contributes to low NOCT and outstanding long-term performance,
  • Lowest module capacitance C for highly repeatable I?V curve and lowest mismatch losses,
  • Whole spectrum highly transparent glass,
  • TÜV approved lowest 20 years equivalent degradation of just 0.5 % out of allowed 5.0 %.


  • 10-year product warranty
  • 12-year warranty on 90% power output
  • 25-year warranty on 80% power output
  • IEC 61215:2005 Ed. 2 certified
  • IEC 61730 (application Class A)
  • High voltage operation (1,000 VDC)
  • Electrically double insulated and mechanically heavy load 5,400 Pa approved Al frame
  • Versatile clamping options allowed
  • Straightly aligned solar cell strings for great visual appearance
  • Strictly positive power output tolerances
  • MCS certificate
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