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New Generation Silicon Solar Cells

5.7 Further prospects

New Generation Silicon Solar Cells

Annual consumption of electricity per person:

1000kWh/a

Annual  solar cell power 1000W/m2a

800 – 1200 hours of sun in Germany with 80%

ca. 800kWh/m2a out of a photovoltaic

   system

Efficiency of 15%   120kWh/m2a

To cover the annual consumption of electricity

per person you need ~ 8,3m2

Multicrystalline solar cell (15x15x0,03cm3) has

a peak power of 3,5W and is made out of 24g

silicon (+ loss during production) 6,8kg silicon

2030 silicon needed per year = 160,000t !

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