With efficient use of electricity, we can reduce the usage of fossil fuels

- When gas prices skyrocketed at the start of the 21st century, the world faced a rather startling reality: 
   * Our primary energy supply, fossil fuels, is even more unstable than some of us thought. 
   * Fossil fuels are finite and frighteningly subject to market, political and geological trends.
   * Renewable energy includes solar power, wind power, geothermal energy, biofuels and hydropower. 

Edited from,
~http://money.howstuffworks.com/5-renewable-energy-careers.htm#page=0