This image shows Amzon's homepage from 1999. Amazon in 1999, along with the internet was not as developed as it is today. 

This chart shows the devices that are used for electronic commerce. Computers are the leading device but recently we have seen the increased use of other devices such as the tablet and smartphones. We can expect to see the continuous increase of these devices in the near future. 

This image displays the process of an online transaction. The image shows the flow of how a customer can purchase a product online. After, the transaction is completed when the money is withdrawed from the customer's bank into the merchant's bank. The flow chart displays the facile manner in which an electonic purchase can be made. 

The trend shows that the e-commerce growth rate is about twice the growth rate of retail sales.  Even during the recession in 2008/2009, e-commerce sales had a growth rate above that of retail.  This could be caused by the convenience of e-commerce that allows people to shop from home and compare prices without having to drive to several different stores.

This image is a chart of the estimated U.S. sales in percentage from 1999-2007. The chart shows how the percent of retail has increased dramatically since the early beginnings of the internet. 

Increasing gas prices seems to correlate with increasing e-tail sales and could be one of the many factors as to why e-commerce is getting popular.  There is a significant increase in e-tail sales during the fourth quarter due to Christmas shopping, but we can see the steady increase of e-tail sales over time when comparing the same quarter each year.

Global Clean Energy Projected Growth for 2011-2021

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