E:
Earth Day: Selected Resources - Science Reference Guide - Finding guide from the Library of Congress, Science Reference Section [U.S. Library of Congress (LOC)]

R:
Renewable Resources Maps and Data (NREL) - Provides high-quality renewable energy resource data for U.S. and international locations [U.S. Department of Energy (DOE), National Renewable Energy Laboratory (NREL)]

W:
Wind Powering America - Committed to dramatically increasing the use of wind energy to meet the growing demand for clean, renewable sources of electricity. [U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy (EERE)]

Wind Research at NREL - Working in partnership with industry to develop larger, more efficient, utility-scale wind turbines for land-based and offshore installations [U.S. Department of Energy (DOE), National Renewable Energy Laboratory (NREL)]