A Short Course on Photovoltaics
Guide for the solar electric newcomer or enthusiast. Includes short course on photovoltaics systems with pictures, graphs and calculations.
http://calsolareng.com/photovoltaics/

IOFFE: Photovoltaics Laboratory
Photovoltaics Laboratory web site - main page
http://pvlab.ioffe.ru

US Department of Energy: Photovoltaics
Information on the government's PV Program.
http://www.eere.energy.gov/solar/photovoltaics.html

Canrom Photovoltaics Inc.
Canrom Photovoltaics Inc. is a Canadian company based in Hamilton, Ontario, which develops world class solar cells, solar modules, and complete and solar systems. Canrom invests heavily in equipment, and research and development, to produce highly efficient solar equipment for commercial applications. Canrom produces a range of power systems for home, marine, and industrial uses. Current research and development efforts are focused on the development of cadnium telluride thin film solar cells. Canrom's photovoltaic modules are guaranteed for 12 years.
http://www.canrom.com/

South Carolina Solar
Solar Energy Systems, Photovoltaic Panels, Inverters, Batteries, Wind Systems, and more for professional Installations.
http://www.scsolar.com

Wikipedia: Photovoltaics
Free encyclopedia article about photovoltaic technology. Addresses development, power generation data and references.
http://en.wikipedia.org/wiki/Photovoltaics

Sol3g
Research, development and manufacture of concentration photovoltaics, non-imaging optics and intelligent tracking electro-mechanical and control systems. Spain.
http://www.sol3g.com/

CADDET Renewable Energy
The CADDET Energy Efficiency Centre collects, analyses, and disseminates information on new energy-saving technologies that have been demonstrated in applications in industry, buildings, transport, utilities, and agriculture. Summaries of all CADDET EE products are available online.
http://www.caddet.org/

Market Trends in the International Photovoltaics Industry
A 2003 report covering various aspects of renewable energy including incentives, mandates, and government programs.
http://www.eia.doe.gov/cneaf/solar.renewables/rea_issues/solar.html

Aenaos Systems
Energy Systems, Photovoltaic, Windgenerator Systems
http://www.aenaos-systems.gr/