Renewable energy facts including how it works and does it cost more for a green energy plan? Commentary: This website briefly introduces several kinds of renewable energy, such as wind and solar. A great thing about this site is that it tells you how to use renewable energy for your own energy need. Since this is a site of England, all the programs mentioned are not applicable to residents in the United States. You have to search similar programs in America if you are interested.
The "social cost" of carbon dioxide emissions may not be $37 per ton, as estimated by a recent U.S. government study, but $220 per ton. Commentary: One of the major concerns of using fossil fuels is their carbon emission, since it causes global warming. As this website defined that the economic damage caused by a ton of carbon dioxide emissions is often referred to as the “social cost” of carbon. These damages are expected to take various forms, including decreased agricultural yields, harm to human health and lower worker productivity, all related to climate change. The damages are more serious in poor countries than that in developed countries. The level of this estimated social cost of carbon impacts policies on carbon emission of using fossil fuels. However, this website does not give other estimated values to compare besides the one from the government.
Solar energy, wind power and moving water are all traditional sources of alternative energy that are making progress. Commentary: This website summarized the increasing need of the world's energy consumption, and described the sources of the energy supplies. Fossil fuels (coal, natural gas and gasoline), along with nuclear energy are supplying 93 percent of the world’s energy resources, while alternative energy, also called renewable energy, only provides 7%. There are many concerns about using fossil fuels, they are non-renewable, and they can and have caused environmental damages. Although various renewable energy, such as solar and wind, are non-polluting, this website does not mentions why they are not popularly used yet. In conclusion, it suggests “No single solution can meet our society’s future energy needs. The solution instead will come from a family of diverse energy technologies that share a common thread — they do not deplete our natural resources or destroy our environment.”
Energy sources are classified as nonrenewable because they do not form or replenish in a short period of time. Renewable energy sources such as solar and wind replenish naturally in a short period of. Commentary: This is one of the best energy introduction websites. It describes every type of renewable and nonrenewable energy sources in details. For example wind energy, it gives its definition, formation, history, wind turbine types, locations where to install, mechanisms to produce electricity, contribution to overall energy production, and environmental concerns. However, this website does not predict future energy supplies from different sources.