alt.energy.renewable

> Its slightly better than PV, but not much.
> Which begs the question why isnt it many times better.
> Mirrors are more than 90% efficient at reflecting sunlight,
> so why is the plants cost in terms of dollars per watt so poor.
>
> The plant is going to cover 3 sq miles which equals 7.74 million sq
> meters.
> At 1000 watts per square meter the plant should make 7.7 GW if it
> was 100% efficient, but its only going to make 280 MW which makes it
> only 3% efficient.
> Where is all the energy lost.

Not all the area are mirrors

From the mirror surface

90% reflected
70% turned in the target into heat
30% converted into electric power

Gives 18,9% over all.

BTW, there are concerns that birds could collide
with wind power plants.

At this plant, birds could fall down from the sky
grilled

--
Roland Mösl
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