Low Iron Textured Solar Glass

  • Higher transmission and lowest iron content solar glass in the world with 60 ppm
  • Low potential induced degradation (PID) leading to higher module output sustainably
  • Higher chemical durability leading to superior performance
  • Very high hydrolytic resistance and ability to cater the requirement of larger module like 96 cells and standard 72/60 cells module
  • The fully tempered solar glass is
    • 2 times stronger than heat-strengthened glass and 4 times stronger than annealed glass
    • Has an enhanced mechanical strength over 180 Mpa
    • Much safer to operate with compared to heat strengthened glass

Shakti: Solar Glass in Matt-Matt Finish

  • Borosil recently developed Shakti: Solar glass in matt-matt finish on both sides
  • The transmission value reaching upwards of 94.0% with use of an appropriate AR Coating
  • Shakti forms around 50% of our sales within one year of product development
  • Forms a good bond with EVA: The adhesion results (Peel Test) are much better in comparison with the standard requirements of 60 N/cm² - 70 N/cm²
  • No changes are necessary in certification of bill of material
  • The module manufactures in many European countries use matt-matt solar glass

2 mm Fully Tempered Solar Glass

  • World’s 1st Manufacturer of 2 mm fully tempered solar glass.Special recognition by Hon. Prime Minister of India Shri. Narendra Modi
  • Low cost of ownership throughout the life of the project in terms of higher mechanical strength, safety, longer life etc.
  • Fully tempered 2 mm solar glass is 2 times stronger than heat-strengthened glass
  • The glass is safer and stronger than heat strengthened glass (that leads to the larger and sharper pieces when broken), qualifies as a safety glass for BIPV, rooftops and claddings
  • Easier for handling, movements and installation: 35% lighter than the traditional 3.2 mm glass
  • The frameless modules with this glass have superior edge sealing leading to increased module life up to 40 years with no power losses
  • Glass-to-glass module is 700 times more water vapour diffusion tight
  • Higher reliability – reduced rate of module failure, uses laminated modules as a roof itself

NoSbEra: Antimony-Free Solar Glass

  • Borosil has developed NoSbEra: World's first Antimony-free solar glass
  • The world is staring at a burning issue of most hazardous substance "Antimony" present in solar glass
  • Antimony in solar glass is toxic and causes
    • Skin and respiratory problems
    • Interferes with gastro-intestinal functions
    • Causes chromosomal damage in leucocytes, inhibits healthy reproduction
    • Possibly carcinogenic to humans
  • Limits set by various agencies on Antimony in drinking water
    • (USA Environment Protection Agency: A limit of 6 ppb
    • World Health Organization (WHO): A limit of 5 ppb
    • California Environmental Protection Agency (CalEPA): A public health goal of 1 ppb for Antimony
  • Proportion of Antimony in solar glass is typically 0.2% to 0.3% (2 to 3 million ppb)
  • Each PV module has a front glass weighing about 16 kg and thus an Antimony content of 32 to 48 grams
  • The Antimony from crushed glass leaches out and gets mixed with water and enters the soil which affects seed germination process
  • The problem posed by solar glass containing Antimony is of GIGANTIC proportions
    • By 2030 the estimated proportion of solar glass as a percentage of total panel mass for different PV panel technologies C-Si (80%), CIGS (90%), CdTe (95%)
    • The Estimated cumulative solar glass waste will be 1.5-7 Million tonnes by 2030. This leads to an exposure of 3000-20000 tons of Antimony
  • Borosil has been able to successfully remove the Antimony from Solar glass
  • Institut fur Solartechnik SPF, SWITZERLAND, widely considered as a GOLD STANDARD for testing and certification of solar glass publishes in its website, test results of solar glass from some of the top solar glass manufacturers in the world
  • Test results published by SPF establish that Antimony free glass by Borosil has nil photo-degradation and the highest efficiency amongst the solar glasses

Selene: Antiglare Solar Glass

  • Selene: An Antiglare solar glass is a recent innovation of Borosil. Anti-glare glass has a specially designed textured surface.
  • It uses a diffusion mechanism to diffuse the reflected light off the surface
  • Diffusion works by reducing the coherence of the reflected image
  • It makes these unwanted images unfocused to the eye and reduces their interference with viewing
  • When the diffusion effect is increased, considerable less light is reflected coherently which eliminates the glare
  • The transmission in Anti-glare glass is slightly lower than the usual non-textured solar glass
  • The glass has undergone test conducted by SPF (SolartechnikPrufungForschung), Rapperswil, Switzerland (World’s leading institute operating in the area of Solar R&D and testing and considered as a Gold standard)
  • The results indicate that Selene achieves the reflected luminance value 19,000 cd/m2 as against the limit of 20,000 Cd/ m2 set for airport installations
  • Selene is suitable for Solar PV installations near Airport

Solar Glass with Anti-Refelective Coating

  • The Anti-reflective coated solar glass gives transmission beyond 94%
  • Anti-reflection coatings on solar glass consist of a thin layer of dielectric material, with a specially chosen thickness
  • The factors impacting destructive interference of light and reflection are as below,
    • The refractive index (RI) of the coating material
    • The thickness of the coating
  • In order to ensure maximum transmission the solar glass manufacturer needs to ensure following:
    • Selection of a coating material with right refractive index
    • Appropriate application method to ensure optimum thickness of the coating
    • Selection of a coating materials with long term durability
    • The laboratory tests to ensure durability, refractivity and light transmission
    • Investment in an AR coating line that ensures uniform coating with optimum thickness
    • Assessment of impact during module manufacturing process
    • Field trials of the modules coated with Anti-reflective coating on front glass

Solar Glass with Anti-Soiling Coating

  • The problem is dirty solar modules tend to cause loss in energy production, depending upon weather conditions and localized terrain
  • There are many countries where solar projects are facing common environmental conditions such as,
    • Wind speed/direction
    • Dust
    • Moisture
  • Solar glass treated with Anti-Soiling coating soils less quickly and is easier to clean
  • The modules can maintain their optimal performance for longer, while reducing the number of cleaning cycles, labour and consumables needed to clean solar installations
  • Some Anti-Soiling coatingshave the same anti-reflective properties as industry-leading Anti-Reflective (AR) coating
  • Coating brings direct performance improvements and indirect maintenance savings, boosting the IRR of solar projects in dry environments

Grid Printed backglass for glass-glass bifacial solar PV modules

  • Grid printed backglass is used in bifacial glass/glass modules
  • Printing is done on the back glass to form a grid pattern. This pattern reflects light back to the solar cells thus enhancing the power output of the solar module
  • Borosil Renewables has the capability to manufacture grid printed backglass in the sizes as per customer requirements
  • The ceramic Ink used is free of toxic elements like Lead