Can you balance cost, air quality and environmental impact of energy sources???

Try Energy City http://engineering-games.net/r-67

Great resources for forms of energy 

http://www.energyville.com/sourcesanddemands/geothermal/

What do we use our energy for???
http://www.energyville.com/sourcesanddemands/officebuildings/

How efficient is each energy source?
http://www.mpoweruk.com/energy_efficiency.htm

What is the Most Efficient Source of Energy?
http://blogs.wsj.com/numbers/what-is-the-most-efficient-source-of-electricity-1754/