Solar Household Energy, Inc. http://www.she-inc.org/
Solar Household Energy (SHE) promotes solar cooking and novel solar cooking equipment.
Build It Solar, http://www.builditsolar.com/ Gary Reysa's site.
NREL Solar Radiation and Climatic Data http://rredc.nrel.gov/solar/pubs/redbook/
NASA Surface meteorology and Solar Energy http://eosweb.larc.nasa.gov/sse/