Silicon for sustainability

Environmental application

1.Silicon in aluminium alloys for lightweighting of vehicles

Lightweighting of vehicles to reduce emissions includes increased usage of aluminium and aluminium alloys containing silicone.

2.Silicon for solar panels producing cleaner energy

Polysilicon – solar and electronic applications. 90% of solar panels silicon based!

Elkem the largest silicon supplier to the polysilicon segment.

Lifecycle assessment for Siemens polysilicon based rooftop multicrystalline photovoltaic system placed in Spain:

Energy payback time of approx 1,6 years in Southern Europe (life time usually estimated at ca 20 years).

Greenhouse gas emissions suggests an output of: 32 g CO2- eqv per kWh.

3.• Lithium ion batteries using silicon has the potential to increase significantly battery capacities Still on R&D level, but researchers believe commercialisation to be within a few years time.

Silicon in diesel car filters effectively reduce particle emissions.

Silicon based ceramics in high wear / high temperature applications.

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