The need for the widespread use of renewable energy use is growing.
Petroleum products lead to increased emissions and possibly to global climate change.
Oil is not an endless resource and we are beginning to see that little is left. Coal-burning energy technologies are often polluting and we will run out of coal soon, too. Renewable energy technologies are the eventual solutions to this problem. The application of these technologies depends on the location considered. The implementation of renewable energy technologies depends on the resource potential, political and social climate, and existing energy structure of that locale.