Аннотация
Together with a number of PV companies an extensive effort has been
made to collect Life Cycle Inventory data that represents the current
status of production technology for crystalline silicon modules.
The new data cover all processes from silicon feedstock production
to cell and module manufacturing. All commercial wafer technologies
are covered, that is multi- and monocrystalline wafers as well as
ribbon technology. The presented data should be representative for
the technology status in 2004, although for monocrystalline Si crystallisation
further improvement of the data quality is recommended. On the basis
of the new data a Life Cycle Assessment has been performed, which
shows that c-Si PV systems are in a good position to compete with
other energy technologies. Energy Pay-Back Times of 1.7-2.7 yr are
found for South-European locations, while life-cycle CO2 emissions
are in the 30-45 g/kWh range. Clear perspectives exist for further
improvements of roughly 40-50%.
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