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

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

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.

Power Technology
A portal for the electrical power industry: international product and service catalogue, event calendar, associations directory, and related links.