The Pros And Cons Of Renewable Energy Sources

Since the early 1970s, when the world had its first energy shortage crisis and recognized a looming environmental crisis, 
interest in developing new sources of energy has risen significantly [1]. A spike in oil prices (2007-2008) created a more recent wave 
if interest in renewable energy sources [2]. In the United States, federal laws, such as the Energy Independence and Security Act of 
2007, as well as state level renewable energy standards support greater use of biomass to produce energy [3]. Both industry and 
academic communities have sought substitutions for fossil energy sources. In the 1990s, renewable energy sources, including biomass, 
hydroelectric, geothermal, solar, and wind, were introduced as novel replacements for fossil fuels