Solar Panels:
a panel's power is expressed in peak watts.
maximum sun intensity is 1.000 w/m^2.
factors that influence the amounts of sunlight reascing the PV (solar) panels are:
weather conditions (clouds, fog, etc.)
altitude of the sun.
number of daylight hours.
www.glrea.org/articles/howdosolarpanelswork.html
Windimills:
in a wide open area, (no buildings nearby) a 12-ft. tower may be sufficient.
in not so open areas, 16-ft. and 20-ft. towers are reccomended.
a windmill with a single diaphragm pump is mainly for one-acre or less.
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