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Germany

Germany

GERMAN STATISTICS

In its annual report for 1993, Germany's Institute for Solar Energy Supply Technology (ISET) states, among other things, that the average technical availability of all 1059 wind turbines it studied (184 MW installed capacity) was an excellent 98%. ISET is responsible for tracking the performance of all turbines installed under Germany's 250 MW wind energy support programme -- some 55% of the total number of turbines installed in the country in 1993. Average annual operating costs, including repairs, maintenance, insurance and land leases, amounted to 3% of the wind turbine's purchase price.

Germany's Institute for Solar Energy Supply Technology (ISET) reports that the average technical availability of all 1059 wind turbines it studied during 1993 -- amounting to 184 MW installed capacity -- was an excellent 98%. The average shut down period per plant was 138 hours and despite the increasing age of the wind turbines -- some are now four years old -- there was no significant increase in downtime.

ISET is responsible for tracking the performance of all turbines installed under Germany's 250 MW wind energy support programme. At the end of 1993 this accounted for some 55% of the turbines installed. In its statistics of downtime, ISET reports that control system failure was the most common problem, but as a rule could be repaired for less than DEM 1000. The expensive problems do not occur as frequently, but among these, lightning strikes resulted in repair bills averaging DEM 10,900 while storms caused an average DEM 12,000 worth of damage.

The institute also gathers data for studying wind energy finances. Average annual operating costs, including repairs, maintenance, insurance and land leases, amounted to 3% of the wind turbine's purchase price.

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