> >after a year of use its operation cost was approximately one US dollar per Watt capacity of output. > Shouldn't that be installation cost, not operating cos

> >after a year of use its operation cost was approximately one US dollar per Watt capacity of output. > Shouldn't that be installation cost, not operating cost? Since the Wikipedia article does not say, we can not be sure. I interpreted that sentence to intend to describe the long term operating costs without consideration of the up-front installation costs (which obviously will inflate the actual long term operational costs if installation costs were amortized over the lifetime of the unit).