Making Biodiesel/ Bioethanol Lab

Alternative energy sources have gained a lot of attention over the past few years.  Biodiesel and Bioethanol are two of the most heard of alternative sources, but what are some more obscure sources?


Solar Power: Energy from the sun
Advantages: The energy is free.  You can get it most everywhere on the planet.  Maintenance of the system is very low maintenance. 


Disadvantages: Not available at night or when there are clouds out.  Expensive.  In order for it to be effective, you need to live in a very sunny place. 

Tidal Power: Power from the crashing waves at the ocean shore.


Advantages: Very predictable patters. The energy source will not run out for an estimated 2 billion years. Free and non-poluting energy source. Maintenance of plant is very low. 


Disadvantages: The barge that is placed in the ocean can cause increased sediment accumulation, decreased salinity and reduced volume.  The fish population will experience an increased mortality rate.  The power stations can only generate power during specific times during the day.  The startup cost of the energy plant is high.