Re: DON'T LOSE time and money around the fusion energy illusion and the lunar-helium-3 dream!!!

On Aug 30, 10:17 am, gaetanomarano <m...@xxxxxxxxxxxxxxxx> wrote:
On 30 Ago, 18:06, Ian Parker <ianpark...@xxxxxxxxx> wrote:

In fact wind power can work out quite expensive. There is the capital
cost and maintainance. In fact in Britain a lot of wind power
installations only exist because of subsidies.

In fact the most promising renewable is solar.

the US Department of Energy say that wind energy prices already are
close or lower that oil/methane-derived energy (and they don't talk of
any subsidies to influence that prices)

the fact is that wind turbines' prices are now very competitive (at
less than $1M per installed MW) and that prices are likely to FALL
quickly thanks to scale-economy (since the number of new wind turbines
will SOON grow from thousands
to hundreds thousands per year)

solar renevable energy surely is promising, but in the long-term

now, the world's installed PV power was 6 GW in 2006 and is expected
to be up to 9 GW at the end of 2007 (compared with 90 GW of installed
wind power at the end of 2007)

the silicon solar cells are efficient but very expensive while the new
"printed" polymorphic cells are cheap but have a lower efficiency
(then need larger surfaces)

the solar thermal power is more promising but now there are only a few
(small) experimental plants under cosntruction in Spain, America, etc.
(so, the bigger commercial plants should need 5-10 years to born)

I agree that solar thermal and the likes of Willie Moo's solar-->H2
are going to become the best long run bet, however the composite of
wind and solar worth of 40 kw/m2 obtained from a given tower footprint
is also doable as is, with such spare and clean renewable energy
easily going into the national grid that's in rather bad shape, as
well as into creating various fluid energy products, such as h2o2.

In the mean time, there's always good old mother Earth's geothermal
cache.
- Brad Guth

.

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