ENV250Y5 Lecture Notes - Lecture 25: Asphalt, Steam-Assisted Gravity Drainage, Bruce Power
Document Summary
Fossil fuels - 85% of our energy supply. Any fuels formed by buried dead organisms, those that died over a million years ago. Oil, coal, and natural gas - all contain a lot of carbon. Energy sources that produce no waste and no greenhouse gases - realistically only clean once its up, to make it takes a lot of materials. Post ww2 it was toted as the future. Easy oil has been found and mostly tapped. We are going after dirtier and/or more expensive oil. On - mostly nuclear (50), then hydro, coal, natural gas. 2013 - 3. 4 - wind, 2. 1 - coal, 23. 4 - hydro, 11. 1% - gas. Nuclear facilities - take 15 years to make, massive water supply needed. Not recoverable in its natural state through a well by ordinary production methods. If you are for them, you call it oil but if you are against them, you call it tar.
