An interesting response

[Alberto Vieira Ferreira Monteiro]

Dan M wrote:
>
> The trick is, as it always has been, to lower launch costs.  Unfortunately,
> even in inflation adjusted dollars, launch costs haven't dropped much over
> the past 40 years.
>
Maybe even if launch costs were _zero_, orbital power satellites could
still have a negative energy net production. Last time I heard (when I
was working in the Space Industry, and not in the Oil Industry), solar
arrays required more energy to be built than the energy they produced
during their lifetimes.

Alberto 'oil rulez, fsck space!' Monteiro