If a gearbox replacement was required every 5 years at a


(a) What is the COE for a turbine with the following assumptions:

5 MW rating

31% capacity factor

$1250/kW turbine cost

$91,000 operations and maintenance cost/year

Fixed charge rate of 9%

BOS costs of $1,999,999

Levelized replacement costs of $135,000/year

(b) If a gearbox replacement was required every 5 years at a cost of $600,000, what would the COE be? How much (in percent) does the COE increase due to the gearbox replacement?

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Mechanical Engineering: If a gearbox replacement was required every 5 years at a
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