Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
To my knowledge, they don't need much maintaince - even less than wind (no moving parts), only the replacement of batteries if present. In Germany, they are usually expected to last 20 years - that is, price calculations run roughly like:
(construction & installation costs) / (20 x (expected yearly production) x (feed-in tariff))

(See some data on this in my upcoming reply to Jérôme.)

As far as I know, the only significant problem with time is chemical changes in the semiconductor, which bring down the efficiency over time.

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Mon Aug 1st, 2005 at 03:27:14 AM EST
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