Alternative Energy

Energy sources beside Cheap Oil - prefereably Renewable Energy (Sustainable)

the cheapest energy is the energy you don't use - Conserving Energy

Tom Murphy (Do The Math) made a matrix to score lots of them according to some criteria. Solar Photo Voltaic and Solar Thermal (using mirrors/concentrators for heating oil or other fluid to run a plain-old Heat Engine) score best.

Solar Power, Nuclear Power, Wind Power, Water Power, Geothermal, etc.

BioFuel