Momentum Technologies LLC A comprehensive guide to more than 3000 renewable energy businesses and organizations. Find businesses by product type, business type, and location. http://energy.sourceguides.com/

CleanEnergy Worldwide directory of renewable energy related companies, products, news, and events. Free companies registration. Many with web pages. http://www.CleanEnergy.de/

The Utility Connection Links to 4,000 electric, gas, water and wastewater utilities, utility associations, organizations, news, magazines, utility financial resources, and related state and federal regulatory and information sites. http://www.utilityconnection.com/

Power Technology A portal for the electrical power industry: international product and service catalogue, event calendar, associations directory, and related links. http://www.power-technology.com/

Geothermal Resources Foundation The Geothermal Energy Foundation provides R&D activities and industry-university co-operation for Geothermal energy in Turkey. http://www.jeotermalvakfi.org.tr