Alternative Renewables

Biofuels• Plant or animal material• 3 types

– Biomass• Wood, yard waste• Methane from landfills, feedlots• Burned and used to create steam electricity

– Biodiesel• Oils or algae• Byproduct: Glycerin• Pure or mixed• Energy Information• Decreased emissions• Storage

Ethanol

• Corn or sugar cane• Mixed with gasoline• Byproducts used as feed• Energy Information

– In vs Out– Final product

• Decreased emissions

Biofuels

• AdvantagesEES 1st

EES 4th

EES 6th EES 7th

• Disadvantages

Geothermal

Uses naturally hot air underground

Pump air to surface Requires energy Remove toxins Spins turbines,

turns generators Cooler air sinks Process repeated

Reverse – air conditioning

Hydrogen Separated from water

Using lots of electricity Burned for energy

Cars Clean Energy Information