The Energy Pie - Use More or Conserve?

Over the past several years we have all become12% for materials)
painfully aware that CO2 emissions from fossil fuelsIndustry = 24%
likely play a significant role in worldwide climateOther Transport = 15%
change. Our insatiable demand for energy is drivingPassenger cars = 9%
prices up and generating more CO2 than ever.Energy from Many Sources
How Much We UseThere has been a lot of conversation about
Today, the world uses about 12 Terawatts per yearrenewable energy sources such as solar, wind and
for all uses. That is 12,000,000,000,000 Watts. In aothers. One would think we are now generating 30%
separate article I reviewed these sources of useof our overall needs from these sources.
which break down as:Unfortunately, that is not the case.
Built Environment = 52% (40% for operations and