On a sunny day (8 Sep 2005 15:14:23 -0700) it happened "Brad Guth"
wrote in
.com:

Jan Panteltje,
Place solar-stirling, secondary/recoil PV and that of a substantial
wind turbine onto one tower, as having their mutual foundation as
footprint and lo and behold, the average available energy per footprint
can exceed 20 kw/m2. Is that good or what?

When you design it, do not forget a little chair all the way at the top
for you to sit in.