U.S. Energy Information Administration
Research-based information on different energy sources and uses; energy forecasts; energy and the environment; state information; maps

U.S. Department of Energy
Science-based information on energy sources, energy uses, energy efficiency

Database of State Incentives for Renewable Energy
Compilation of incentives and policies promoting renewable energy and energy efficiency

The Nature Conservancy Pennsylvania 
Reports and fact sheets on natural gas pipelines, Marcellus Shale; maps showing existing and projected wind turbines

Switch Energy Project 
Videos about different energy topics

National Energy Technology Laboratory - Role of Alternative Energy Sources: Natural Gas Technology Assessment 
Study discussing natural gas as an option for meeting the country’s energy needs with identifying of environmental and cost aspects of natural gas power

ElectroCity is an online computer game that lets players manage their own virtual towns and cities. It’s great fun to play and also teaches players all about energy, sustainability and environmental management in New Zealand.

EnerCities is an online elearning game for young people to experience energy-related implications. The goal of the game is to create and expand virtual cities dealing with pollution, energy shortages, renewable energy etc. The game is web-based and suitable to play on low-budget computers. You will need to downlad Unity game platform.