Some other sources of energy

http://www.renewables-info.com/renewable_energy/renewable_energy_sources_list.html

The above website speaks rather broadly of possible alternative sources, for renewable energy. It does also list (in brief) some pros and cons of various alternatives energies. For example, even though Solar Energy is promising--' the main disadvantage of using solar cells is that they are still relatively expensive, for instance installing solar panel rooftop system in United States is likely to cost you more than $20,000 (2009 data).'. Alternative energy will have an uphill struggle due to the reluctance of our generation, to try our hand at something (relatively) new. This reluctance can come from a variety of reasons, but the first step to dispelling it, is to understand what are the alternatives, and how these alternatives work.

- Adnan Mansoor