Pilkington Optiwhite™ for Solar Applications

Extra clear low-iron float glass with very high solar transmittance for improved solar energy conversion, consistent performance and durability.

Overview

Pilkington Optiwhite™ is a range of extra clear low-iron float glass products with very high solar transmittance, offering improved solar energy conversion and consistent performances. This range of low-iron glass products is suitable for use in thin film photovoltaics, crystalline silicon photovoltaics, concentrated solar power technology, solar thermal collectors and solar mirrors.

The Pilkington Optiwhite™ Range includes the standard and well established low-iron glass Pilkington Optiwhite™ and Pilkington Optiwhite™ S, which was developed specifically for the solar industry and offers even greater solar energy transmittance. Pilkington Microwhite™ is our Pilkington Optiwhite™ in its extremely thin version (glass thicknesses down to 1.0 mm).

With its very high solar energy transmittance, our low iron glass Pilkington Optiwhite™ is the ideal cover plate for a range of solar technologies, including Thin Film Photovoltaics, Concentrated Solar Power Technology and Solar Thermal Collectors. Pilkington Optiwhite™ can also be used as a cover plate for Crystalline Silicon Photovoltaics.

For more information on the Pilkington Optiwhite™ product range, please read our Pilkington Optiwhite™ brochures, or stay up-to-date with our latest solar glass news.

Benefits

Pilkington Optiwhite™ for solar applications offers following benefits:

  • very high light and solar heat transmittance,
  • consistent lifetime performance following prolonged exposure to the sun (no solarisation),
  • available in annealed or tempered/toughened form for Pilkington Optiwhite™ and Pilkington Optiwhite™ S; available in annealed form only for Pilkington Microwhite™.

Literature

Pilkington Optiwhite™ Product Range

Our range of solar glass products includes the standard and well established low iron glass Pilkington Optiwhite™, and Pilkington Optiwhite™ S, which was developed specifically for the solar industry and offers even greater solar energy transmittance.

Pilkington Microwhite™ is our Pilkington Optiwhite™ in its extremely thin version (glass thicknesses down to 1.0 mm). 

The properties of our Pilkington Optiwhite™ products are summarised in the table below:

Pilkington Optiwhite™ - performance data summary

Nominal Substance
(mm) ± 0.2
Light Transmittance
(%)
Solar Direct Transmittance
(%)
3.0 91.1 90.3
3.2 91.1 90.2
4.0 90.9 89.8

Pilkington Microwhite™ - performance data summary

Nominal Substance
(mm)
Light Transmittance
(%)
Solar Direct Transmittance
(%)
1.0 ± 0.05 91.7 91.6
1.1 ± 0.1 91.7 91.5
1.3 ± 0.1 91.7 91.5
1.6 ± 0.1 91.6 91.4

Pilkington Optiwhite™ - performance data summary

Nominal Substance
(mm) ± 0.2
Light Transmittance
(%)
Solar Direct Transmittance
(%)
3.0 91.6 91.1
3.2 91.6 91.0
4.0 91.5 90.8

All measurements have been carried out by UKAS accredited laboratory and have been calculated to ISO9050:2003 AM1.5 and D65 (2dg obs).

All figures quoted are indicative of typical product properties.

Product Applications

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