Photon International – The Photovoltaic Magazin	www.photon-magazine.com
Renewable Energy Access	www.renewableenergyaccess.com
European Photovoltaic Industry Association	www.epia.org
Sandia National Laboratories	www.sandia.gov/pv
National Renewable Energy Laboratory - NREL	www.nrel.gov/buildings/pv
National Center for Photovoltaics – NCPV	www.nrel.gov/ncpv
U.S. Department of Energy	www.eere.energy.gov/solar/photovoltaics.html
Florida Solar Energy Center	www.fsec.ucf.edu/en
Database for State Incentives for Renewable Energy (DSIRE)	www.dsireusa.org
Energy Information Administration	www.eia.doe.gov
International Energy Agency	www.iea.org
Solar Links	zebu.uoregon.edu/eesolar.html
BIPV and solar architecture	www.kisscathcart.com
Home power magazine	www.homepower.com
Insolating tables:      - Africa      - Asia      - Europa      - North America      - South America	www.apricus.com/html/insolation_levels_africa.htm www.apricus.com/html/insolation_levels_asiap.htm www.apricus.com/html/insolation_levels_europe.htm www.apricus.com/html/insolation_levels_usa.htm www.apricus.com/html/insolation_levels_sth_am.htm
World Solar Energy News Online	www.solarbuzz.com