<div dir="ltr">Over my small (Central European) country, there are about 10 large passenger planes every moment. Their combined power is roughly equal to all the hydroelectric, coal and nuclear power beneath them - combined.<div>
<br></div><div>I am not sure is this pathetic or glorious fact. I guess both.<br><div><br></div><div><br></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jul 16, 2014 at 5:58 AM, Keith Henson <span dir="ltr"><<a href="mailto:hkeithhenson@gmail.com" target="_blank">hkeithhenson@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Tue, Jul 15, 2014 at 3:37 PM, "Robert G Kennedy III, PE"<br>
<<a href="mailto:robot@ultimax.com">robot@ultimax.com</a>> wrote:<br>
<br>
snip<br>
<div class="">><br>
> Yes, hundreds of Mt. Other than a first prototype article, we're not<br>
> thinking of boosting any of it off Earth. Too dang expensive. For a<br>
> project of this scale, it's off-world materials or nothing.<br>
<br>
</div>I suggest that even the prototype might be built of asteroid materials.<br>
<br>
Though if sunshades come after power satellites, the transport cost<br>
can't be very high.<br>
<div class=""><br>
> Now, I will concede that 2/3 of that mass in space is driven by the<br>
> power generation function we're piggybacking on the sunshade function.<br>
<br>
</div>If you are mainly after energy, and building up space industry so it<br>
could build sunshades, it might be better to populate GEO with power<br>
satellites first. If we eventually tap L1 for energy, the GEO power<br>
sats could be converted to relay stations. If we were pouring energy<br>
captured at L1 into the earth system, sunshades might be required to<br>
keep the energy gain down.<br>
<span class="HOEnZb"><font color="#888888"><br>
Keith<br>
</font></span><div class="HOEnZb"><div class="h5">_______________________________________________<br>
extropy-chat mailing list<br>
<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a><br>
<a href="http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat" target="_blank">http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat</a><br>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><a href="https://protokol2020.wordpress.com/" target="_blank">https://protokol2020.wordpress.com/</a><br></div>
</div>